MiniMax M3.1 Flash
#6 in Open-Source LLMsMinimax · flash · since 2026-10-19 · 16× · last seen Oct 21, 2026
72
Momentum
MiniMax M3.1 Flash is a model from MiniMax released on October 19, 2026 for agentic tasks and coding, with a 1M-token context window. The API has been available since release; the model weights were announced for October 23, 2026 and had not been published at the time of research, so the open-source classification is not yet verified.
Momentum trend
23.07.21.10.
Features
| Key Benchmark (%) | DeepSWE: 73.7%; Automation-Bench: 62.2% (vendor-reported) |
| Context Window (Tokens) | 1,000,000 tokens (max output 524,288 tokens) |
| License | Proprietary until weights are published; weights announced for October 23, 2026 |
| Multimodality | Input: text, image, video; output: text |
| Platform | MiniMax API (MiniMax-M3.1-Flash), M Plan, MiniMax Code; OpenAI- and Anthropic-compatible endpoints |
| Price per 1M Tokens | Input $0.15 / Output $0.60 / Cached input $0.015 (flat, regardless of context length) |
| Release Date | October 19, 2026 |