Techmeme
December 21, 2025, 6:40 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]
John Sakellariadis / Politico:
Sources: DHS is investigating whether 6 staffers misled CISA's acting director into taking a polygraph that he failed, compounding instability at the agency  —  The incident this July and the subsequent fallout — which has not been reported before — have angered career staff …
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: Fortune
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.
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 …
Jessica Mathews / Fortune:
A look at military tech startup Shield AI, recently valued at $5.6B, and its new CEO Gary Steele, who aims to grow annual revenue from $300M to $1B by 2028  —  The X-BAT will be flown using Shield AI's autonomous software, Hivemind.COURTESLY OF SHIELD AI  —  There are plenty …

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Earlier Picks

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