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MiniMax M3 has been released as an open-weight model and its weights are hosted…

2026-06-12 · 15:30 UTC ·@0xSero ·0 min read

Brief

MiniMax M3 is an open-weight model released 2026-06-12 and published to Hugging Face. The MiniMax team states the model contains ~428B total parameters with ~23B activated parameters and provides a linked sparse-attention paper/weights; @0xSero praised the release and predicted a ~400B scale to run it.

Why it matters

MiniMax M3 has been released as an open-weight model and its weights are hosted on Hugging Face (announcement posted 2026-06-12).

Key details

  • The MiniMax team reports the model has ~428 billion total parameters with ~23 billion activated parameters; a sparse-attention paper/implementation is linked by the team.
  • Author @0xSero praised the release and expected the model to be roughly a 400B-scale model to get running.
Source evidence

Minimax-M3 is out!!!!!!!

Good job on the Minimax team for making another banging open weight model.

I knew it’d be 400B~ now to get it running

MiniMax (official) (@MiniMax_AI)

MiniMax M3, Open-Weight, Now On Hugging Face , with only ~428B parameters and ~23B activated parameters

Weights:
huggingface.co/MiniMaxAI/Min…
MiniMax Sparse Attention:
huggingface.co/papers/2606.1…

— https://nitter.net/MiniMax_AI/status/2065436935188058208#m