Last Week in AI

Last Week in AI

Last Week in AI #345 - 5 new models, 9 misalignment incidents, some Dots

Anthropic and OpenAI race to release smarter and cheaper models, OpenAI discloses nine misalignment incidents, and more!

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Last Week in AI
Sep 30, 2026
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Anthropic and OpenAI race to release smarter and cheaper models

Sources:

  • Anthropic launches Claude Opus 5.5 with stricter safeguards for cybersecurity

  • OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes

  • OpenAI launches GPT-6.1 Sol, says it nearly matches GPT-6 Astra and costs less

  • Anthropic releases Sonnet 5.5, which it calls a…

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