Minimax

MiniMax releases open weights for 428B-parameter M3.1 Flash model: MiniMax released open weights for its M3.1 Flash model on October 23, making the model available to developers. The mixture-of-experts model has approximately 428 billion total parameters with 23 billion activated per token. It supports text, image and video inputs and a context window of up to 1 million tokens.

AI Models • TechNode

MiniMax M3.1 Flash rises 13 points to 42 on Intelligence Index at half its predecessor's cost: MiniMax's M3.1 Flash improved by 13 points to 42 on the Artificial Analysis Intelligence Index at half the cost of its predecessor. It scored 73.7 percent on the DeepSWE v1.1 coding benchmark for under $0.30 per task, matching Deepseek V4.1 Flash 1017 on both performance and price.

MiniMax • The Decoder