Techmeme
December 21, 2025, 11:10 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 …
Mitchell Peters / Billboard:
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 …
@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]
Kashmir Hill / New York Times:
Some experts in the human-computer interaction field say making AI chatbots act humanlike creates cognitive dissonance for users over how much to trust them  —  I first noticed how charming ChatGPT could be last year when I turned all my decision-making over to generative A.I. for a week.

Sponsor Posts

Clay:
Turn any GTM idea into reality  —  Clay helps GTM teams combine AI agents, enrichment, and intent data to move faster and turn insights into action.
Soxton:
AI-powered law for startups  —  Soxton automates startup legal so founders can move faster and sleep better.  We handle incorporation, advisor, employment and commercial contracts.  Join the waitlist for early access!
Zoho:
Zoho Books Banking just got smarter: Here's what's new  —  Banking and accounting are crucial parts of every business.  And with the right tools in place, they don't have to be complicated or time-consuming.
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:
AI's Research Frontier: Memory, World Models, & Planning — With Joelle Pineau
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:
Moltbook Mania Explained
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.
Uncapped with Jack Altman:
The Benchmark Partnership
Conversations with people I admire about things I'm genuinely interested in.
Subscribe to Uncapped with Jack Altman.
Channels with Peter Kafka:
Who is Josh D'Amaro and Why is He Disney's New CEO?
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.
The Social Radars:
Spenser Skates, Founder & CEO, Amplitude
Come be a fly on the wall as Y Combinator's Jessica Livingston and Carolynn Levy talk to some of the most successful founders in Silicon Valley about how they did it.
Subscribe to The Social Radars.
Tools and Weapons with Brad Smith:
Special Edition: Key findings from the Microsoft AI Diffusion Report
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 11:10 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

Bloomberg:

Earlier Picks

April Roach / CNBC:
Business Insider:
Isabelle Bousquette / Wall Street Journal:
Mariella Moon / Engadget: