MiniMax M3.1 Flash 发布：428B MoE、$0.15/$0.60、常开推理五档
官方规格整理：428B MoE 约 23B 激活、1M 上下文、文本图像视频输入，定价 $0.15/$0.60 每百万 token；推理不可关闭，五档 effort；Automation-Bench 62.2 超 Opus 5，但 Terminal Bench 4.0 落后 13.7 分，DeepSWE 也低于 Dee
▲ MiniMax just released M3.1 Flash, pushing frontier-level agent performance down to Flash pricing: $0.15 / $0.60 per 1M tokens on a 428B MoE with about 23B activated parameters. Space Bunny, the stealth model that processed 200T+ tokens, was an earlier version of it. 🐰 Yes, Space Bunny was on M3.1 Flash from its development... The core design choice is always-on reasoning with 5 effort levels, from Low to Max. Thinking cannot be disabled, so M3 integrations that send thinking.type=disabled now return an error. On MiniMax's own table, it scores 62.2 on Automation-Bench v1.0.6, ahead of Opus 5 (50.3) and GPT-5.6 Sol (45.8), and ties Opus 5 on BankerToolBench at 76.2. Every effort level stays below $0.05 per task. It is a trade-off though: it trails Opus 5 by 13.7 points on Terminal Bench 4.0, and DeepSeek V4.1 Flash-1017 still beats it on DeepSWE (77.0 vs 73.7). With a 1M context window, text, image and video input, and a flat price at half of M3's per-token rate, it targets high-volume coding and office agents. Open weights arrive Oct 23...... Full analysis: https://www.marktechpost.com/2026/10/19/minimax-m3-1-flash-release/ API: http://platform.minimax.io Try it: http://agent.minimax.io/tools/m3-1-flash-preview @MiniMax_AI