MiniMax M3.1 Flash: Specs, $0.15/$0.60 Pricing, Open Weights and API Guide
MiniMax M3.1 Flash went GA on 19 Oct 2026 at a flat $0.15/$0.60 per 1M tokens, half of M3's price. A 428B/23B MoE with 1M context and always-on reasoning, it scores 43 on Artificial Analysis vs M3's 29. Covers license terms, vLLM/SGLang serving and M Plan tiers.