---
format: "aidr-story-markdown/v1"
id: "22d238367392bfdbf842a9174c3529a7a4e9ea121c73f1a80f1cdfcc964c29f7"
canonical_url: "https://aidr.today/22d23836?lang=en"
title: "Last Week in AI #346 - 719 math manuscripts, 2 Western open models, 1 more safety resignation"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-09T05:06:58.000Z"
category: "Models"
topics: ["openai","open-source"]
source_urls: ["https://lastweekin.ai/p/last-week-in-ai-346-719-math-manuscripts"]
summary: "OpenAI published hundreds of math proofs from an unreleased frontier model. Mistral and Reflection AI launched open-weight models to rival China."
---

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

> [Open the canonical story](<https://aidr.today/22d23836?lang=en>)

**Published:** 2026-10-09T05:06:58.000Z
**Category:** Models
**Topics:** openai, open\-source

## Summary

OpenAI published hundreds of math proofs from an unreleased frontier model\. Mistral and Reflection AI launched open\-weight models to rival China\.

## Sources

- [Story source](<https://lastweekin.ai/p/last-week-in-ai-346-719-math-manuscripts>)