MiniMax releases open weights for 428-billion-parameter M3.1 Flash model

What happened: MiniMax released the weights for its M3.1 Flash model on October 23, letting developers download and deploy it. The release follows the model's initial service launch on October 19. Key numbers: About 428 billion total parameters, 23 billion activated per token. Context window up to 1 million tokens. Dates: October 19 launch, October 23 weights release. Why it matters: Open weights with deployment guidance for SGLang and vLLM, plus multi-chip support through FlagOS, give developers options to run the model themselves for coding, AI agents and computer-use tasks.

MiniMax released the weights for its M3.1 Flash model on October 23, letting developers download and deploy it. The release follows the model's initial service launch on October 19.

Open weights with deployment guidance for SGLang and vLLM, plus multi-chip support through FlagOS, give developers options to run the model themselves for coding, AI agents and computer-use tasks.