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OSS2026-06-29 · source-backed

VibeThinker-3B claims frontier math/code parity at 3B, and Mistral confirmed a July open family.

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Two signals from this week's r/LocalLLaMA discussion. VibeThinker-3B, an MIT-licensed Qwen2.5-Coder-3B fine-tune from WeiboAI, claims parity with frontier reasoners on math and code at just 3B parameters, and Mistral confirmed a new open-weight family shipping July 2026. After a quarter dominated by Chinese labs (GLM-5.2, Kimi K2.7, MiniMax M3), Mistral's family points to a possible Western permissively-licensed option. This is a single-source roundup, so verify the VibeThinker benchmarks independently before trusting a 3B model that claims to punch at frontier weight.

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