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MiniMax's[1] news post is dated 2025.12.23 and says the M2.1 API is now live on its Open Platform and the weights are open-source; OpenRouter[5] lists minimax/minimax-m2.1 on 23 December 2025 and Artificial Analysis[4] gives 23 December 2025, while the Hugging Face[6] repository was created on 20 December and its weights uploaded on 21 December.MiniMax releases M2.1, an open-weight 230B-parameter mixture-of-experts coding and agent model that activates 10B parameters and scores 74.0 on SWE-bench Verified and 88.6 on its new VIBE full-stack benchmark.
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