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Last Week in AI #346 - 719 math manuscripts, 2 Western open models, 1 more safety resignation

L4 · DeveloperModels & ReleasesLast Week in AI· 10/9/2026

Covers frontier model capabilities, open-source strategy, and safety concerns that affect build decisions and technical direction.

AI Summary

OpenAI published 719 mathematical proofs from an unreleased frontier model while Mistral and Reflection AI launched open-weight models intended to compete with Chinese AI developments.

Excerpt

OpenAI publishes hundreds of math proofs from unreleased frontier model, Mistral and Reflection AI launch open-weight models to rival China, and more!

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