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MiniMax's[1] news post is dated 2025.10.27 and announces M2 as open-sourced with its API and MiniMax Agent free for a limited time; VentureBeat[3] covered it at 12:01 pm PT on 27 October, while the Hugging Face[5] weights were uploaded on 25 October UTC and Artificial Analysis[4] gives 26 October.MiniMax open-sources M2, a 230B-parameter mixture-of-experts model with 10B active parameters built for coding and agentic work, priced at $0.30 per million input tokens and ranked first among open-weight models on Artificial Analysis's Intelligence Index at launch.
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