Techmeme
December 21, 2025, 3:20 PM

Top News

Joe Rivano Barros / Mission Local:
Waymo says it temporarily suspended its ride-hailing service in San Francisco during a citywide blackout, as downed traffic lights appeared to halt its vehicles  —  Waymo said Saturday that it was stopping service across San Francisco after numerous online videos showed its autonomous vehicles …
@metr_evals:
METR: Claude Opus 4.5 has a 50% task completion time horizon of about 4 hours and 49 minutes, more than double that of Claude Opus 4 released earlier this year  —  We estimate that, on our tasks, Claude Opus 4.5 has a 50%-time horizon of around 4 hrs 49 mins (95% confidence interval of 1 hr 49 mins to 20 hrs 25 mins). While we're still working through evaluations for other recent models, this is our highest published time horizon to date. [image]
Mariella Moon / Engadget:
Google says it needs more time to upgrade Assistant to Gemini on most Android devices; Google previously planned to complete the transition by the end of 2025  —  The transition from Assistant to Gemini will continue into 2026.  —  Google wanted to remove Assistant from most Android phones …
Business Insider:
Google and Apple advise employees on H-1B and other visas not to travel outside the US due to processing delays, following new social media screening rules  —  - Google and Apple are advising some employees with visas not to travel outside the US, per memos viewed by Business Insider.
Sri Muppidi / The Information:
Source: OpenAI's share of revenue after the cost of running AI models for paying users has jumped to ~70% in October, up from ~52% at the end of 2024  —  As OpenAI discusses raising an unprecedented investment round of up to $100 billion, it can crow about some key improvements to how it runs its business.
More: Bloomberg
Samuel K. Moore / IEEE Spectrum:
US CHIPS Act-funded SMART USA Institute, focused on digital twins for chipmaking, says the Department of Commerce will terminate its $285M five-year contract  —  The head of a U.S. CHIPS and Science Act-funded center devoted to digital twins for chip manufacturing has informed its 121 members …
Bloomberg:
Chinese AI chipmaker Moore Threads announces a new generation of chips slated for mass production from 2026, just weeks after its blockbuster IPO in China  —  Moore Threads Technology Co. introduced a new generation of chips aimed at reducing artificial-intelligence developers' dependence …

Sponsor Posts

Subquadratic:
Subquadratic: the LLM built for 12M-token reasoning  —  SubQ can reason across entire codebases and document sets in one pass with no RAG workarounds.  Read how SubQ 1.1 Small holds near-perfect retrieval out to 12M tokens.
Cape:
Most carriers track everything.  Cape doesn't.  —  Unlimited talk, text & data, 24-hr metadata deletion, network ID rotation, SIM-attack defense, and more.  Switch today and get 29% off for life.
Zoho:
Celebrating 10 years of Zoho Marketplace  —  30 Zoho products,2,900+ extensions and integrations,1 million+ users, and2 million installations.Zoho Marketplace celebrates a decade-long journey of adding timeless value …
IDrive:
Protecting your Cloud Applications Data  —  Backing up Office 365, Google Workspace, Dropbox & Salesforce data is critical to preventing data loss or corruption, complying with laws and avoiding critical downtime in case of a disaster.

Featured Podcasts

Big Technology Podcast:
Best of Big Technology: How Ozempic Changes Our Bodies, Minds, and Economy — With Johann Hari
The Big Technology Podcast takes you behind the scenes in the tech world featuring interviews with plugged-in insiders and outside agitators.
Subscribe to Big Technology Podcast.
Hard Fork:
Zuckerberg's Anti-Doom Fantasy + Finally an A.I. Detector That Works + A.I. Math
The future is already here. Each week, journalists Kevin Roose and Casey Newton explore and make sense of the latest in the rapidly changing world of tech.
Subscribe to Hard Fork.
Channels with Peter Kafka:
Joanna Stern on the New Siri, OpenAI's Weird Gadget, and Life After the Wall Street Journal
Media and tech aren't just intersecting - they're fully intertwined. To understand how those worlds work, Peter Kafka talks to industry leaders, upstarts and observers.
Subscribe to Channels with Peter Kafka.
Invest Like the Best:
Eric Vishria - A Decade of Lessons Investing in Software & Hardware
The leading destination to learn about business and investing. We do this by showcasing exceptional talent and ideas.
Subscribe to Invest Like the Best.
The Talk Show With John Gruber:
'Getting the Snack Right', With Chance Miller
The director's commentary track for Daring Fireball. Long digressions on Apple, technology, design, movies, and more.
Subscribe to The Talk Show With John Gruber.
Tools and Weapons with Brad Smith:
Connecting the Unconnected: Doreen Bogdan-Martin
Microsoft Vice Chair and President Brad Smith speaks with leaders in government, business, and culture to explore the most critical challenges at the intersection of technology and society.
Subscribe to Tools and Weapons with Brad Smith.
 

About This Page

This is a Techmeme archive page. It shows how the site appeared at 3:20 PM ET, December 21, 2025.

The most current version of the site as always is available at our home page. To view an earlier snapshot click here and then modify the date indicated.

More News

April Roach / CNBC:
Isabelle Bousquette / Wall Street Journal:

Earlier Picks

OpenAI: