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MiniMaxMiniMax-M familyCurrentReasoning modelReleased 19 Oct 2026

MiniMax-M3.1-Flash

Successor to the plan-only MiniMax-M3.1-Flash-Preview (Sept 27). Same Anthropic-format endpoint as MiniMax-M3.

Model idMiniMax-M3.1-Flash

Price$0.15 in, $0.60 out per 1M tokens

Checked19 October 2026

No published training cutoff

At least0events since its release on 19 October 2026

0 historic, 0 major. 0 days of news.

MiniMax doesn’t publish a training cutoff, so we count from its release date. The real gap is larger.

How to call it

3 ways to use MiniMax-M3.1-Flash, with the model id each provider expects.

Providers, model ids, endpoints and docs for MiniMax-M3.1-Flash
ProviderModel idEndpointDocs
MiniMax API MiniMax-M3.1-Flash https://api.minimax.io/anthropic platform.minimax.io
OpenRouter openrouter.ai
MiniMax Code (desktop) agent.minimax.io

Pricing

Prices for MiniMax-M3.1-Flash
Input$0.15 per 1M tokens
Output$0.60 per 1M tokens
Cache read$0.015 per 1M tokens

As published: “per 1M tokens (USD), flat rate”.

Source: minimax.io, checked 19 October 2026.

Specs

Input
Text and images
Output
Text
Context window
Not published
Max output
Not published
Open weights
No
Licence
Proprietary
Training cutoff
Not published
Released
19 October 2026
Status
Current
Type
Reasoning model

What stands out

What its maker marketed at launch, and what people found later, each with its source.

  • Cheap fast agent model

    $0.15/$0.60 per 1M tokens, 200+ tokens/s; MiniMax reports DeepSWE v1.1 73.7%, OSWorld V2 61.7, Agents’ Last Exam 29.6, CyberGym 82% (self-reported).

    Source: minimax.io

  • Stealth-tested as ‘Space Bunny’

    Ran anonymously on OpenRouter as Space Bunny, #1 by usage for 10 days with 56.7T tokens, before the reveal.

    Source: x.com

Notes

Weights promised for Oct 23, 2026 (MiniMax X post); until then API-only, so open_weights is false and license unknown. Context window and max output not stated at launch. Image input inferred from MiniMax’s BabyVision score; not confirmed in docs.

Sources: https://www.minimax.io/blog/minimax-m31f · https://x.com/MiniMax_AI/status/2112150867868541221

Not yet checked against an official source: OpenRouter slug not verified.