September 2026
AI news in September 2026
66 items from 7 labs. 22 posts, 21 releases, 6 changelog entries, 3 model notes, 12 incidents and 2 deprecations. OpenAI was busiest with 31. Spread over 4 days, with the busiest on 3 Sep 2026.
66items7labs22posts21releases6changelogs12incidents2deprecations
Who published what
OpenAI 31, Anthropic 20, Google 8, xAI 4, Alibaba 1, Cursor 1
Models that shipped this month
- Claude Fable 5.1 Anthropic · 2026-09-01
- Claude Mythos 5.1 Anthropic · 2026-09-01
- Gemini 3.8 Flash Google · 2026-09-02
- Muse Spark 1.3 Meta · 2026-09-02
- GPT-6 Astra OpenAI · 2026-09-03
Day by day
- Friday 4 September 202610
- Thursday 3 September 202621
- Wednesday 2 September 202615
- Tuesday 1 September 202620
Counts are of what our own collector saw, so a month before we started watching a source will read light. Every item links to the lab that published it.