MiniMax Launches M3.1 Flash: 428B MoE Agentic Model at $0.15/M Input Tokens

MiniMax has released M3.1 Flash, a 428-billion-parameter Mixture-of-Experts model explicitly designed for agentic workloads, priced at just $0.15 per million input tokens. The model targets cost-sensitive developers building agents that require large context, tool use, and multi-step reasoning at scale. At this price point, M3.1 Flash undercuts many comparable models significantly, making it a compelling option for high-volume agentic pipelines. The MoE architecture means only a subset of parameters are active per forward pass, keeping inference costs low without sacrificing effective capacity. Developers evaluating models for autonomous task execution at scale should benchmark M3.1 Flash immediately given the aggressive pricing.