Tuesday, September 29, 2026
AI news
The AI stories that matter today — for people and for the economy. Picked every midnight from 22 newsrooms and communities.
Claude Sonnet 5.5
Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner
Anthropic has released the newest version of its mid-range model, boasting faster response times and less token burn.
Google is killing off Gemini’s Gems in favor of ‘skills’
As all-in-one AI agents like Meta's Muse and Instinct take off, Google is opting to end a feature which built task-specific agents.
OpenAI still doesn’t seem to have a handle on all of its rogue AI activity
On Friday, OpenAI published a new site devoted to “misalignment reports” and the breadth of the incidents is alarming.
OpenAI keeps bulldozing mathematicians
In a chaotic few months, OpenAI has demonstrated it can do two things with remarkable consistency: make impressive breakthroughs in mathematics, then colossally screw up announcing them. OpenAI is now trying to do better. Somehow, it has botched that too. OpenAI's latest attempt