22 Sep
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1/6 · Models
Yesterday was Grok 4.7 ( pelicans ) and MiMo v2.6 Flash/Pro ( more pelicans ). Today Anthropic released Claude Opus 5.5, and around an hour later OpenAI released GPT-6 Sol and GPT-6 Luna.
Source: Simon Willison and 1 more · 22 Sep
2/6 · Anthropic
OpenAI and Anthropic both recently released new models aimed at lowering costs.
Source: Ars Technica · 22 Sep
3/6 · Models
Anthropic has launched Claude Opus 5.5, the first model in its Claude 5.5 family.
Source: TestingCatalog · 22 Sep
4/6 · Models
Anthropic has released its latest AI model with Claude Opus 5.5. The new version arrives about two months after the previous Opus model upgrade, matching Anthropic’s previous upgrade cadence.
Source: 9to5Mac · 22 Sep
5/6 · Safety & Policy
Anthropic says its new Claude Opus 5.5 model comes with stronger safeguards in the wake of recent rogue AI hacking incidents.
Source: The Verge · 22 Sep
6/6 · Models
How to prompt Opus 5.5, steer a long run, and check your results in Claude apps and Claude Code. Opus 5.5 works well with the way you already use Claude.
Source: Claude Blog · 22 Sep
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