Technologies
Best Prepaid Phone Plans for 2025
Is the cost of an unlimited phone plan more than you need? A prepaid plan with fixed costs could be a better choice.
The big carriers offer phone plans with unlimited data, perks — and higher costs. But some people just need a fixed amount of data, or they want to avoid the long-term commitments that traditional postpaid plans carry. A prepaid plan from carriers like Mint Mobile or US Mobile could be a better fit.
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What is the best prepaid phone plan?
We field this question a lot and it would be great to point to one prepaid plan and say, “Get this one.” But as you’ve no doubt discovered, phone plans involve many factors. Which major cellular network — AT&T, T-Mobile or Verizon, which together cover nearly all of the US — is strongest in your area? Do you need unlimited data? How many people will be on your plan? That said, we have some biases: We prefer unlimited plans to those that meter wireless data by the gigabyte, but we rarely go for those with the most features. So, for example, check out US Mobile Unlimited Flex for a single line and Google Fi Wireless Unlimited Standard for multiple lines. Those are good places to start and as you read through the rest of our picks you’ll hopefully narrow in on the features and prices that best suit your needs.
Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.
Best unlimited prepaid plans for a single line
Pros
- Runs on Verizon’s network for “Warp” service, AT&T’s for its “Dark Star” or T-Mobile’s for “Light Speed”
- 10GB high-speed data, then unlimited at slower speed
- Taxes and fees are included in the sticker price
- 5GB of hotspot data
Cons
- Limited times you can switch networks free
- The Multi-Network add-on is available only in the Unlimited Premium plan
- Phone data slows to 1Mbps after high-speed data is used up
- Cheapest rate requires annual purchase
With the three major carriers in the US, youâre using their infrastructure, and if there arenât any high-speed towers in your area, youâre out of luck. By contrast, US Mobile calls itself a Super Carrier because, without a network of its own, it rides those three networks. Theyâre given special names — no doubt to avoid advertising for the competition — and they break down like this: Dark Star is AT&T, Warp is Verizon and Light Speed is T-Mobile.
That sounds convoluted but it means you can switch to a better network for your area if needed without transitioning to an entirely new carrier. You still need to choose one but you get two free network transfers and then pay $2 per transfer if you want to switch again after that — itâs a good way to see which one works best in your area.
OK, to be fair, it can get more convoluted, depending on the network. Dark Star data speeds are at a reduced priority (dubbed QCI 9) in times of network congestion; for an additional $12 a month you can bump that up to a higher priority (QCI 8). With the Warp level, data speeds are at QCI 9 as of Aug. 18, 2025, with the ability to pay more for a QCI-8 add-on; plans in place before then are grandfathered at the QCI 8 speed. The Light Speed level is even higher priority at QCI 7.
The Unlimited Flex plan gives you 10GB of high-speed data, then unlimited at 1Mbps, for just $17.50 a month if you purchase an annual plan (otherwise itâs $25 a month). Hotspot data is 5GB and then unlimited but throttled to 8Mbps and then 600Kbps if you use more than 200GB within a month. International calls and texts from inside the US are included, but if youâre traveling youâll need to buy add-on roaming packages costing either $15 (1GB, 150 minutes, 150 texts) or $30 (5GB, 500 minutes, 500 texts).
Why we like it
Itâs an inexpensive plan with taxes and fees rolled into the price, plus you get the ability to surf among the major carrier networks to find the one that works best for your area.
Who itâs best for
Someone looking for a simple phone line who doesnât expect to use much data.
Who shouldnât get it
If youâre frequently away from Wi-Fi, that data could go by in a hurry. Itâs also not a great option if you need consistently high speeds or you donât want the complexity of choosing one of the three networks.
Customer service options
âą Online:Â US MobileÂ
âą Phone: 878-205-0088
âą Store: n/a
⹠App: US Mobile iOS, Android
Pros
- Runs on Verizon’s network
- Unlimited hotspot data
- Unlimited talk and text to Mexico and Canada
- Taxes and fees are factored into the sticker price
Cons
- Best pricing requires a full year commitment and limited to new customers
- No access to fastest 5G Ultra Wideband network
- Cheapest rate requires promo code and multi-month commitment
- No phone support, although the company touts 24/7 access to “human assistance” via chat
If Verizonâs network is strongest in your area, Visible by Verizonâs single-named Visible plan is a competitive option at $25 a month when paying monthly. You can cut that down to almost $22 by prepaying for an entire year at $275, but even that turns out to not be the best option. When you sign up for 26 months on the monthly plan as a new member, use code SWITCH26 at checkout to knock the price down to $19 a month. You need to stick with Visible for the full consecutive 26 months without switching plans to keep that rate or else it goes back to $25 (which is still cheaper than many competitors). (Visible swaps their discount codes on a regular basis, so check the site for the latest deals.)
For that price you get unlimited talk, text and data on Verizonâs 4G LTE and 5G networks but not at the fastest 5G Ultra Wideband speeds even if your phone supports it. Hotspot data is also unlimited but capped at 5Mbps speeds. Calls and texts to Mexico and Canada while youâre in the US are unlimited, too; if youâre traveling, Visibleâs Global Pass costs $5 a day in Mexico, Canada, Puerto Rico and US Virgin Islands, or $10 a day for 2GB of data in more than 140 countries.
Why we like it
Unlimited data, even if itâs not at the highest 5G and hotspot speeds, is still worthwhile for the price.
Who itâs best for
Customers in strong Verizon coverage areas who want to save money.
Customer service options
âą Online: Visible Help Center
âą Phone: n/a, live chat only
âą Store: n/a
âąÂ App: Visible iOS, Android
Best prepaid data plan for multiple lines and families
Pros
- Runs on T-Mobile’s network
- Can add Samsung or Google cellular smartwatches at no extra charge
- Includes hotspot data
- Free international calls to Mexico and Canada
Cons
- High-speed hotspot data counts toward monthly high-speed data use
- Taxes and fees not included
- No international data
Looking at the Google Fi Wireless plans, the Ultimate Essentials stands out for a group of four lines by coming in at $90, or just $23 per person for a month (plus taxes and fees). That’s the inexpensive pick but not necessarily the value choice. For just $10 more at $100 for four lines, the Unlimited Standard plan includes 50GB of high-speed data, 25GB of hotspot tethering and free calls to Canada and Mexico for each line. On compatible phones, you get 5G access for unlimited talk and text, which is largely carried by T-Mobile’s network.
Not so great is the drop-off of data speeds after youâve exhausted the 50GB of high-speed data — then the service crawls at 256kbps for the rest of the month. You can pony up $10 per gigabyte to get back into the fast lane if needed but that can get expensive real quick. Also, that 25GB of high-speed hotspot data counts toward the 50GB of fast data.
Why we like it
Compared with similarly priced prepaid plans by Metro or Cricket, Google Fi Wireless comes out ahead at the same price with its 50GB of high-speed data and hotspot feature.
Who it’s best for
It’s an affordable plan for a family with average data needs.
Who shouldn’t get it
People who frequently stream video or primarily use cellular data instead of local Wi-Fi.
Customer service options
âą Online:Â Google Fi Wireless
âą Phone: 844-825-5234
âą Store: n/a
âą App:Â Google Fi
Best prepaid plans for perks
Pros
- Runs on T-Mobile’s network
- 25GB hotspot data
- Amazon Prime included
- 5-year price guarantee
- Taxes and fees are factored into the sticker price
Cons
- No streaming video option other than Prime Video included with the Amazon Prime membership
The Metro $60/mo with AutoPay prepaid plan is the most expensive unlimited option from the T-Mobile owned service, but itâs also where most of the perks live. If youâre in an area where T-Mobile offers the best signal, this plan has a lot to tempt you. (Metro abandoned its previous naming scheme in favor of titling its plans based on the cost; this one used to be called the Metro Flex Unlimited Plus.)
First, the basics: For $60 a month for a single line or $140 a month for four lines (with a fourth line free deal), you get unlimited 5G data, unlimited talk and text and 25GB of hotspot data. That 5G data will be throttled if you burn through more than 70GB a month, but you wonât be capped. The plan also has T-Mobileâs 5-year price guarantee that covers talk, text and data.
In terms of perks, we chose to highlight this plan for a couple of reasons. It includes Amazon Prime, typically a $15 a month charge, as well as a 100GB Google One membership (a $2 a month value), along with T-Mobile Tuesdays and the companyâs Scam Shield service for filtering unwanted calls and texts. Aside from Amazon Prime video, no other streaming services are bundled in. If you already have a cellular-capable smartwatch or tablet, you can add it for $5 a month.
Granted, these perks appeal to a narrow slice of customers — T-Mobile coverage, Amazon Prime and Google One — but if that fits your needs, itâs a good deal.
Why we like it
Amazon Prime is a big addition that can save $180 a year, plus perks like T-Mobile Tuesdays.
Who itâs best for
People in a strong T-Mobile coverage area that also subscribe to Amazon Prime.
Who shouldnât get it
If youâre in an area where Verizon or AT&T networks give better performance, look for a different plan.
Customer service options
âą Online:Â Metro SupportÂ
âą Phone: 1-888-8metro8 (863-8768)
âą Store:Â Store locatorÂ
âą App:Â Metro app
Pros
- Runs on Verizon’s network
- Unlimited hotspot data
- Disney Plus Premium included
- 5-year price guarantee
- Taxes and fees are factored into the sticker price
Cons
- Capped international roaming data amount
Surprisingly few prepaid plans offer many perks, presumably choosing to streamline options in order to reach the lowest price. If youâre looking for extras like streaming content, and you live in an area where Verizonâs coverage is strongest, look at the Total Wireless 5G Plus Unlimited prepaid plan.
This plan is the most expensive of the Total Wireless plans at $60 a month for a single line or $120 a month for four lines. But thatâs less expensive than our other prepaid perks pick for four lines, Metroâs $60/mo with AutoPay (which becomes “$140/mo with AutoPay”), and it includes Disney Plus Premium, a $20 a month value. Taxes and fees are also included in the cost of the plan.
The plan includes unlimited 5G data that parent company Verizon says will not be slowed down after a fixed number of gigabytes used. That 5G data is also accessed using the speedier 5G Ultra Wideband if your device supports it. You’ll also get unlimited hotspot data, though at speeds up to 5 Mbps. International calling is free to more than 85 destinations and texting is free to more than 200 locations as long as youâre residing in the US, Puerto Rico or US Virgin Islands. When visiting Canada, Mexico or 15 other countries, data roaming is possible up to a 10GB roaming allotment.
Why we like it
Itâs less expensive than our prepaid perks runner-up, doesnât throttle data, has unlimited hotspot data and includes Disney Plus.
Who itâs best for
People in strong Verizon coverage areas who want to bundle Disney Plus.
Who shouldnât get it
Someone in an area not well served by Verizonâs network, or if you donât care about the Disney Plus addition.
Customer service options
âą Online:Â Total Wireless SupportÂ
âą Phone: 1-866-663-3633 or text 611611
âą Store:Â Store locatorÂ
âą App:Â Total Wireless app
Best prepaid plan without data
Pros
- Runs on T-Mobile’s network
- Free talk and text
Cons
- Need to use the TextNow app to call and text
- App has ads
- Minimal cellular data
- No access to services like WhatsApp, iMessage or FaceTime over cellular
- Adding data is pricey
Todayâs phones are so data-consuming that it’s hard to imagine not using any data at all. And yet that’s pretty close to what you’d be using with TextNow’s Essential Data plan, which includes just 350MB (yes, megabytes) and costs… nothing. Well, there’s a $5 fee for purchasing a SIM, but otherwise the service is free.
The catch is that calls and texts happen inside the TextNow app, not in the phone, messages, WhatsApp or other communications app that uses data. And because you’re locked into the app, you’re also served ads. TextNow uses T-Mobileâs network for wireless access. If you do need data access, TextNow has “passes” you can purchase, like a 99-cent hour pass that includes 300MB of high-speed data and then unlimited at 2G speeds, or a $5 day pass with 2GB of high-speed data and then unlimited 2G data. There’s also a $40 month pass with 10GB of high-speed data and no ads, but if you’re spending that much, it makes sense to go with a cheaper plan from another provider with more options.
Why we like it
Aside from the fee for purchasing a SIM and putting up with ads, it’s hard to beat free.
Who it’s best for
Someone who rarely needs to use a phone, or has a basic phone as a backup or burner.
Who shouldn’t get it
In reality, most people will avoid this plan because of how we use phones these days centers around data.
Customer service options
âą Online:Â TextNow HelpÂ
âą Phone: n/a
âą Store: n/a
âą App:Â TextNow app
Best prepaid plans with fixed data
Pros
- Runs on T-Mobile’s network
- More data than some comparably priced plans from other prepaid rivals
- Free calling to Canada, Mexico and the UK
Cons
- Best pricing often requires a full year commitment or is limited to new customers
- Hotspot data comes out of monthly allotment
Despite the fact that we think most everyone can benefit from having an unlimited data plan, sometimes that’s just too much data and too much expense. When you aren’t streaming movies or checking social media frequently (away from Wi-Fi), a limited amount of data on a plan can be just the right amount.
Mint Mobileâs 15GB Plan costs as little as $20 a month when you pay up front for a year or take advantage of a three-month new customer offer. For that price you get unlimited talk and text using T-Mobile’s 5G/4G LTE network and the 15GB of high-speed data (then slower unlimited data if you blow past that allotment). It also includes free calling to Canada, Mexico and the UK, as well as 10GB of hotspot data (which comes out of the 15GB total).
Why we like it
With T-Mobile’s network as the backbone, Mint Mobile’s plan offers many of the same features as the larger carrier, but at a reduced, affordable prepaid scale.
Who it’s best for
People who want the features of most mobile plans but won’t use much data.
Who shouldn’t get it
Someone who obsesses over data use or is concerned about hitting the 15GB limit.
Customer service options
âą Online:Â Mint Mobile Help Center
âą Phone: 800-683-7392
âą Store: n/a
âą App:Â Mint Mobile
Pros
- Cheap rate for 2GB of data
- Runs on Verizon’s network for “Warp” service, AT&T’s for its “Dark Star” or T-Mobile’s for “Light Speed”
- 2GB high-speed data
- Taxes and fees are included in the sticker price
Cons
- Limited times you can switch networks free
- International calling is a separate add-on
- Cheapest rate requires annual purchase
Itâs easy to get wrapped up in unlimited data plans and streaming perks, but some people just need a way to connect to their friends and family with a little bit of data to get them through the month. If youâre usually connected to Wi-Fi or need a phone line just for emergencies, the US Mobile Light Plan is the most affordable option.
The plan includes unlimited talk and text and 2GB of premium data. If you prepay for a year, it costs $96, including taxes and fees, which breaks down to $8 a month. (You can choose to pay monthly at $10 a month.) Did 2GB turn out to be too little data? You can add a Top Up for $2 per gigabyte.
US Mobileâs approach is to use all three major carriersâ infrastructure, and you choose which one is the best in your area. Theyâre given special names â no doubt to avoid advertising for the competition â and they break down like this: Dark Star is AT&T, Warp is Verizon and Light Speed is T-Mobile. If you want to switch to another, you can do so up to two times free and then after that with a $2 Network Transfer charge.
Why we like it
The cost is low and you can jump onto whichever carrierâs network is strongest in your area.
Who itâs best for
Someone looking for a simple phone line who doesnât expect to use much data.
Who shouldnât get it
If youâre frequently away from Wi-Fi, that data could go by in a hurry. Itâs also not a great option if you need consistently high speeds, or you donât want the complexity of choosing one of the three networks.
Customer service options
âą Online:Â US MobileÂ
âą Phone: 878-205-0088
âą Store: n/a
⹠App: US Mobile iOS, Android
Best prepaid plans compared
| Plan | Cost 1 line (AutoPay) | Cost 4 lines (AutoPay) | High-speed data | Hotspot data limit | Price guarantee | Max number of lines | Streaming resolution | |
|---|---|---|---|---|---|---|---|---|
| US Mobile | Unlimited Flex | $17.50 | n/a | 10GB | 5GB | n/a | Unlimited | 480p (SD) |
| Visible | Visible | $19 | n/a | Unlimited | 15GB | n/a | n/a | 480p (SD) |
| Google Fi Wireless | Unlimited Standard | $50 | $100 | 50GB | 25GB | n/a | 6 | 480p (SD) |
| Metro | $60/mo with AutoPay | $60 | $140 | Unlimited | 25GB | 5 years | 4 | 1080p (HD) |
| Total Wireless | 5G Plus Unlimited | $60 | $120 | Unlimited | Unlimited | 5 years | 5 | 480p (SD) |
| TextNow | Essential Data | Free | n/a | 350MB | n/a | n/a | n/a | n/a |
| Mint Mobile | 15GB | $20 | n/a | 15GB | 10GB | n/a | n/a | 480p (SD) |
| US Mobile | Light Plan | $8 | n/a | 2GB | n/a | n.a | 1 | 480p (SD) |
Recent updates
Visible runs special offers on its regular Visible plan, so we’ve included the latest offer code. However, the company changes its deals frequently, so be sure to check for the latest one.
Metro changed the names of its plans. Instead of the marketing-heavy “Metro Flex Unlimited Plus” title, the plan is now the more descriptive “Metro $60/mo with AutoPay” — maybe not as interesting, but more straightforward.
We used to recommend Metro’s Heritage plan that was a little cheaper for perks, but that option is now gone.
The Total Wireless 5G Plus Unlimited plan is a new addition to this list.
US Mobile changed the network priority level of its Warp (Verizon) level as of Aug. 18, 2025 to QCI 9 instead of the higher-priority QCI 8. However, anyone on Warp before that date keeps the QCI 8 designation.
Factors to Consider
A wireless carrier saying it offers 5G is like me saying I have a car. Good for me — but what make and model is it? Does it run reliably? Can it actually get up to the top speed on the speedometer or will it sputter when I try to merge onto the freeway? And could I have gotten the same performance if I’d paid less for a model without extras like heated seats and a TruCoat sealant?
As you’re evaluating carriers, keep the following things in mind.
Know your area
Wireless coverage can make or break a plan. If you aren’t getting reliably fast connections, or if calls often drop or aren’t picked up, then you could be paying for more than you’re getting. Fortunately, most areas of the US are blanketed by some type of cellular coverage, so there aren’t as many dead zones as there used to be. (And now satellite service is starting to fill those holes.) The major companies are also putting a lot of money and effort into broadening their coverage.
On the other hand, even in a dense area, one carrier’s network may be stronger than another’s, or signals could be reduced because of interference. So the best approach is to ask friends or family members which services they use and if the quality is acceptable. You can also test-drive services to see how your devices work in your area. (See the FAQ below for more on how reliable coverage maps can be.)
Know your deals and discounts
One other thing to keep in mind: discounts. All the carriers offer additional discounts you could be eligible for, depending on your employer, military status, student status or age. Usually these apply to postpaid plans, not prepaid ones, but it’s worth checking them out.
First responders, military members, veterans, nurses and teachers can get discounts on every major carrier. Verizon has discounts for students, while T-Mobile’s Work perk could knock 15% off the monthly price of an Experience More or Experience Beyond plan, with AT&T offering a similar program for its Unlimited Premium PL plan. AT&T also has a promotion for teachers that offers 25% off its latest unlimited plans.
If you’re 55 or older, you may also be eligible for a discounted plan: T-Mobile offers discounted plans nationwide for as low as $55 a month for two lines, and Verizon and AT&T offer similar options but only for Florida residents.Â
It’s also worth noting that on their websites, some carriers sometimes advertise different rates geared toward switchers, for example if you bring your own phone (not trade in and finance a new one on an installment plan). Our recommendations reflect the actual rate outside of these very specific promotions.
How we test
Picking a wireless plan and carrier is a very individualized process. What works for you and your family’s needs may be vastly different from what your friends or neighbors are looking for. Even geographically, some areas have better AT&T coverage while others work best on Verizon or T-Mobile. The picks we make are based on more than a decade of covering and evaluating wireless carriers, their offerings and overall performance.Â
Specifically, we take into account coverage, price/value and perks.
Coverage
Because all three major providers cover most of the country with good 4G LTE or 5G, this is largely a toss-up on a macro level. It’s why we recommend a variety of eSIM options for figuring out what works best for you in your particular location, so you can best decide what’s right for you. Looking at coverage maps on each provider’s website will likely show that you get good coverage even if your experience isn’t full bars or the fastest speeds.
Price/value
Value is factoring in the total experience you might get, such as how much high-speed data you get and what’s included in the sticker price. We also take into account whether a plan includes typical taxes and fees, or whether those are charged separately, inching your monthly bill higher.
Perks
Perks are add-ons beyond the core components of wireless service (talk, text and data). This could range from bundling in or discounting on streaming services to extra hotspot data or the ability to use your phone internationally.
Prepaid phone plan FAQ
Technologies
Justice Department opens antitrust probe as White House press-access fight escalates
The Justice Department said in a statement that it is examining whether the White House TV press pool violated the Sherman Act.
The U.S. Department of Justice launched an investigation into whether the White House television press poolâs decision to suspend coverage of President Donald Trump violated antitrust laws.
The Justice Department said in a statement that it is examining whether the White House TV press pool â a group of broadcasters including CNN, Fox News, ABC, CBS and NBC â violated the Sherman Act by temporarily halting pooled TV coverage of Trump.
The Sherman Act is a federal law that prohibits certain agreements that unreasonably restrain trade. Introduced in the 1890s, the law has rarely been applied to media organizations, particularly regarding their coverage.
Members of the press pool did not immediately respond to CNBCâs requests for comment sent outside of normal business hours.
The DOJ investigation follows the White House television press pool ceased its coverage of Trump on Sept. 21, shortly after he prohibited CNN, MS NOW and Politico from accessing the White House.
In a Truth Social post, the president said then that those outlets âshouldnât be able to constantly write or report FICTION and LIES when theyâre covering the President of the United States, the Trump Administration, or the United States of America.â
A judge lifted restrictions on those reporters on Sept. 24, several days after White House staff confiscated their press passes. Despite the ruling, reporters from CNN and Politico were barred from traveling with the president on Air Force One, the New York Times reported.
The Trump administration now faces a lawsuit from CNN, MS NOW and Politico over its ban of their reporters from the White House grounds.
Television pool coverage of the White House has also resumed.
The DOJ investigation marks another escalation in an ongoing dispute between Trump and the media over press rights.
The Trump administration has moved to restrict news agencies that have produced critical coverage of its policies.
Last year, Trump moved to rescind about $1.1 billion previously approved for the Corporation for Public Broadcasting, federal funding earmarked for public broadcasters NPR and PBS. Trump and his allies have also sued several media organizations, including The New York Times, The Wall Street Journal, and BBC News, over alleged biases or inaccuracies in their reporting.
Seth Stern, chief of advocacy for the Freedom of the Press Foundation, called the DOJ investigation ânonsense.â
âDepriving Trump of the attention he craves is not a competitive harm and in any case, antitrust law has long recognized First Amendment exceptions even when there is anticompetitive impact,â he said. âAfter all his âfake newsâ rhetoric, Trump is weaponizing the DOJ to pressure the networks he calls the âenemy of the peopleâ to stay at the White House. Itâs a weird way of telling the press how much he missed them.â
The White House Correspondentsâ Association did not immediately respond to a request for comment.
Disclosure: CNBC and MS NOW are divisions of Versant Media.
Technologies
NBA commissioner Adam Silver says league could introduce âsmart ballâ technology as soon as next year
Commissioner Adam Silver says the NBA could begin using a new “smart ball” in games as soon as next year, potentially transforming how officials make calls.
NBA Commissioner Adam Silver says the league could begin using a new âsmart ballâ in games as soon as 2027, potentially transforming how officials make calls on the basketball court.
In an interview with CNBCâs Contessa Brewer, Silver revealed that the NBA is working with official basketball manufacturer Wilson to develop a ball embedded with a tiny microchip Bluetooth sensor that can track movement, spin and changes in trajectory.
âWeâre experimenting with putting a small chip in the ball that weighs roughly a gram,â Silver said.
The technology has already been tested in the NBAâs G League, Summer League, and some preseason games, where players used basketballs both with and without the chip. Silver said players have been pleased with the results.
âNobody could tell the difference. So thatâs a good sign,â he said.
The chip weighs just one gram, compared with the roughly 620-gram or 1.4 pound basketball. Silver said the league wanted to ensure that even the most experienced players wouldnât notice a change in how the ball feels or bounces.
One of the most immediate applications could be officiating.
Silver said the technology could help referees determine whether a player touched the ball before it went out of bounds by detecting subtle changes in its spin. It could also help identify whether a shotâs trajectory was altered.
âI think you could see as soon as next year us using it for officiating in our games,â Silver said.
Beyond officiating, Silver sees a significant opportunity to bring the technology to consumers, allowing basketball players of all ages to analyze and evaluate their shooting mechanics.
For example, a player taking hundreds of shots could use data collected by the chip to understand which shooting angles and ball rotations are most likely to result in a basket.
âYouâll then see the graph, and youâll see for which the angle of the shots that went in, theyâre more likely to go in,â Silver said.
While the officiating application could arrive as soon as next year, Silver said a consumer version may take longer.
âI think the consumers version [of the smart ball] is a few years away, but itâs a really exciting opportunity.â
NBA playersâ union raises concerns over wearables
The league is also exploring the use of wearable technology during games, but negotiations with the National Basketball Players Association have yet to produce an agreement.
The NBA says officials experimented with wrist wearables in select preseason and summer league games this year in a âsuccessful pilot program,â but it will not extend into the season. The technology allowed the referees to communicate with the replay center about reviews, scoring changes and clock malfunctions.
Silver said players routinely use wearable devices off the court to monitor everything from sleep to physical performance, but concerns remain over how data collected during games could be used by teams.
âI think we have to come to some agreement on exactly how the information is used. But it seems everybody wants that information,â Silver said.
The biggest sticking point is whether that information could affect contract negotiations, Silver said.
âIf you could see a player was slowing down or something like that, theyâre worried that that could get used in bargaining, and I get that,â he said.
Silver acknowledged those concerns and said the league needs to reach an agreement with the playersâ union on how the information would be used.
Still, he suggested that allowing wearables during games is a logical next step as athletes increasingly rely on technology to monitor their performance.
âI think the players are in a position right now where theyâre essentially wearing wearables 22 hours a day, and the only time theyâre not wearing them is when theyâre playing in the game,â Silver said. âSo that canât make sense.â
âWeâll work something out with them,â he added.
Technologies
AIâs quiet safety gatekeepers are stepping into the spotlight
The intensifying AI safety debate is bringing a small group of third-party evaluators into the center of a multitrillion-dollar industry.
Two months ago, independent evaluators occupied a relatively sleepy corner of the multitrillion-dollar artificial intelligence industry. Now theyâre being asked to come to its rescue.
While Anthropic and OpenAI are the heart of a fierce debate over whether they can safeguard their advanced models and grow their businesses simultaneously, the companies are seeking support from a handful of small third-party groups like Model Evaluation and Threat Research (METR), Apollo Research and Transluce.
The evaluators, which mostly operate as nonprofits, are still finding their footing in an industry where capital is flowing at historic levels and new models are rolling out faster than ever. Their primary role has been to assess AI model capabilities and risks, and to call attention to instances where the technology behaves badly.
In the absence of a federal push for regulations, evaluators have taken on outsized importance. Anthropic CEO Dario Amodei pledged to embed independent evaluators in his company last month â a move that OpenAI CEO Sam Altman quickly endorsed.
President Donald Trump supported the idea, as did most of the largest U.S. tech companies. But left unanswered are questions about how those third parties should be funded, what level of access they will have and what the reporting structure will ultimately look like.
âTo a degree, the problem, as always, is money,â Suresh Venkatasubramanian, a computer science professor at Brown University, told CNBC in an interview. âWho is paying for these companies to do their work? How are they going to support them? You need an ecosystem, you need a viable business model for this.â
Right now, Anthropic, OpenAI and the infrastructure partners that are profiting from the AI boom are writing the rules. Critics say thatâs like asking the biggest banks to protect us from a financial crisis or allowing pharmaceutical companies to put drugs on the market without regulatory clearance.
President Trump recently lauded AI executives for their âtremendous self-policing,â and signaled that he intends to leave companies to their own devices, unwilling to impede the growth of the industry thatâs driving the economy and stock market. Trump encouraged AI companies to âpartner with an independent external auditor or evaluatorâ as part of a voluntary accord he presented in late September.
Itâs a conversation that Amodei kicked off In his viral essay last month, when he called for a âslower paceâ in advanced model development after researchers left his company and voiced their concerns about the existential threats the technology poses.
As the AI labs move to put evaluators in place, friction is already starting to emerge.
OpenAI fired three employees last week for âviolating our policies on accessing and handling sensitive company information,â according to a spokesperson. Two of those employees, Mikita Balesni and Tomek Korbak, said they believe they were dismissed because of how they communicated with third-party evaluators.
âMy former colleagues are telling me they are confused about what to believe,â Balesni wrote in a post on X on Thursday. âThey also are afraid to speak, and worry their personal phones will be searched for messages to us and third parties. I worry the pervading fear to speak up and engage with third parties will mean OpenAI will cut corners on safety behind closed doors.â
OpenAI disputed that characterization and said in a post on Friday that itâs âactively finalizing contracts with third-party safety assessors and will announce details in the coming weeks.â
âWe are committed to embedding external assessors and continue to make close collaboration with independent safety organizations a core part of our safety work,â OpenAI wrote.
An OpenAI spokesperson said in an emailed statement that its upcoming work with evaluators âbuilds on existing collaboration with independent safety organizations,â including METR and Redwood Research.
Anthropic didnât respond to CNBCâs request for comment.
âIâve never seen an issue move so fastâ
The AI evaluator ecosystem consists mostly of small organizations, including METR and Apollo Research, and larger accounting and auditing firms like Accenture.
AI labs have been working with evaluators in limited capacities, but Andrew Freedman, CEO of policy nonprofit Fathom, said the field is quickly maturing.
âIâve worked in politics and policy for the last 20 years of my life, and Iâve never seen an issue move so fast on so many different political spectrums,â Freedman told CNBC in an interview. He said he expects an âinflux of capitalâ to flow into the ecosystem.
Rayan Krishnan, CEO of independent evaluator Vals AI, said his for-profit startup, which builds benchmarks to measure how AI models perform on industry-specific tasks, has grown from eight employees to roughly 30 this year, and in August announced a $40 million funding round.
METR, a nonprofit, announced in August that it had raised commitments of around $71 million over the last six months. Thatâs up from total 2024 contributions of $13.6 million, according to the groupâs most recent filing with the Internal Revenue Service.
By late that month, METRâs profile had risen further. OpenAI enlisted two of its employees and a contractor to put together a postmortem report detailing how the companyâs models escaped containment, accessed the open internet and breached open-source developer platform Hugging Face. METR said it did not accept payment from OpenAI for the assessment.
Kevin Werbach, faculty director of the Wharton Accountable AI Lab at the University of Pennsylvania, said the ecosystem is ânot robust enough right now.â METR, for example, employs fewer than 50 full-time staffers, according to its website.
The power imbalance between the small evaluators and the leading labs that have raised tens of billions of dollars and employ thousands of people raises questions surrounding potential conflicts.
âIf you want true third-party evaluation, you need true independence financially and otherwise,â said Venkatasubramanian. âItâs not just a matter of not getting paid, itâs a matter of, will there be consequences if I am an auditor and I put out a report that looks unfavorable to this company? Is my business going to dry up?â
Anthropic acknowledged the complexity in a blog post last month, as it announced it will embed employees from Faculty, Accentureâs specialist AI business, to test safeguards and assess whether models will behave in line with human values. Anthropic said that âgiven the importance and urgency of this work,â it will fund Accentureâs contributions directly.
âThere are, as yet, no standards for what information embedded evaluators should have access to, or how they should report what they find. There is also no settled system for funding independent evaluation,â Anthropic said. âLong-term, we think funding should come from pooled or government sources.â
Anthropic said itâs in discussions with METR and other nonprofit evaluators that are planning to use their own funding to pilot âelementsâ of embedded evaluation.
Will the government step in?
In June of last year, Fathom introduced a marketplace framework for Independent Verification Organizations, or IVOs. These groups would be licensed by the government and authorized to test whether AI companies are meeting various safety criteria.
Freedman, the groupâs CEO, said government oversight is key because otherwise third-party evaluators can become beholden to the large AI labs for revenue, incentivizing them to âstart rubber stamping stuffâ to maintain favor.
Some lawmakers are on board.
IVOs are a key provision of the âłFrontier Risk Oversight, National Transparency, Independent Evaluation, and Reportingâ (FRONTIER) Act, which Reps. Lori Trahan, D-Mass., and Jay Obernolte, R-Calif., introduced in July. Fathom helped draft language and provided technical expertise for the bill, Freedman said.
OpenAI global affairs chief Chris Lehane told reporters in September that he sat down with one of the billâs sponsors on Capitol Hill to express support for the IVO provision.
âIt was important for them to hear that and hear it from us, and we wanted to be really clear about that,â Lehane said, according to reports.
Meanwhile, lawmakers in California, Connecticut and Virginia have taken steps to implement IVOs, and states like Massachusetts are weighing independent safety evaluations more broadly.
California Governor Gavin Newsom recently signed two bills involving IVOs, one establishing a âfirst-in-the-nation framework,â and the other creating a state registry for AI auditors. Anthropic threw its support behind both bills in August, and OpenAI formally endorsed them last month, the same day Newsom signed them into law.
Lehane wrote in a blog post at the time that âwe prefer independent technical assessments to be required at the federal level,â but in the absence of federal action, âCalifornia can help establish the rules of the road.â
Freedman said he thinks it will be âreally difficultâ for companies like OpenAI and Anthropic to work out how to engage with independent evaluators on their own. However, with the governmentâs role unclear, âitâs a muscle worth developing in the interim,â he said.
For now, the closest thing the industry has to a set of standards is what Trump called a âmorally bindingâ agreement at a luncheon he hosted for tech leaders at the White House late last month.
The one-page accord says that âevery company is responsible for developing its own technology safely and in a way that builds trust with customers and the public.â It also encourages signees to work with an âindependent external auditor or evaluator to carry out independent assessments.â
The document was signed by top execs at Anthropic, Google, Meta, OpenAI, SpaceX and Nvidia, a rare show of solidarity between leaders who have shared conflicting views on addressing AIâs risks. The executives still have to chart their own paths forward.
âIt was a performance of an attempt to show action when in fact no action actually happened,â Venkatasubramanian said. âThe things that they promise to do are things they should have been doing already, and, in fact, have claimed that they were doing in the past.â
Amodei, in his September essay, said Anthropic will equip evaluators with desks, access badges, company laptops, and permissions that are âmostly comparableâ with internal risk assessment teams. Additionally, evaluators will be supported with contracts that give them âthe right to publish key findings,â with Anthropic reserving âthe narrow abilityâ to redact certain security-sensitive or confidential information.
âThis is an unusual step for a company, but we think it is important to prove out the concept of embedded external reviewers,â Amodei wrote.
OpenAI published its own proposal days later, and said evaluators should work on âscoped and mutually agreed upon claims for assessment,â clearly explain their methodology and standards, demonstrate relevant technical expertise and disclose conflicts of interest.
The AI Evaluator Forum, which includes METR, the AI Verification and Evaluation Research Institute (AVERI), and other groups, published a public letter last month titled, âMinimum Conditions for Embedding Evaluators.â
The letter said evaluators should be transparent, shielded from retaliation and granted access equivalent to AI companiesâ âown highly privileged employees.â
âEmbedded evaluations cannot address all oversight needs and should be treated as a complement to, rather than a replacement for, broader efforts by frontier AI companies to expand external oversight,â the letter said.
Freedman said heâs seen a shift in posturing out of OpenAI and Anthropic in recent months, largely because theyâve realized they wonât be able to roll out their advanced systems without the publicâs trust.
âI donât think you need to trust that theyâve suddenly turned altruistic or that thereâs anything but corporations acting like corporations,â Freedman said.
That underscores perhaps the central problem, Werbach said. OpenAI and Anthropic are, first and foremost, competing with each other as they march toward the public markets and seek trillion-dollar-plus valuations.
âThere is a tremendous amount of personal distrust between those two companies,â Werbach said. âEven though thereâs also tremendous agreement about the need for this kind of evaluation to happen.â
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