Using MiniMax M3.1 Flash on OpenRouter

Implementation guide · MiniMax M3 · MiniMax

Serverless

OpenRouter exposes MiniMax M3.1 Flash through model ID minimax/minimax-m3.1-flash:free. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call minimax/minimax-m3.1-flash:free — see the documentation for request format.
  3. 3
    You'll be billed Free/1M input, Free/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokensFree
Output tokensFree

Capabilities

VisionMultimodalReasoningJSON / Tool useStructured OutputsPrompt Caching

About MiniMax M3.1 Flash

MiniMax M3.1 Flash (API ID MiniMax-M3.1-Flash) is MiniMax's M-series language model for agentic reasoning, tool use, coding, computer use, cybersecurity and long-context tasks. It has a 1,000,000-token context window, accepts text, image and video input, and always thinks before answering, with tunable thinking depth (effort: low, medium, high, xhigh, max; default max). Flat pay-as-you-go pricing is $0.15 / $0.60 / $0.015 per 1M input / output / cached-input tokens. It replaces MiniMax M3.1 Flash Preview. Model weights are promised later and are not on Hugging Face as of 2026-10-19.

Full model details →

Model Specs

Released2026-10-19
Context1M
ArchitectureDecoder Only

More Models on OpenRouter

MiniMax M3
All models on OpenRouter →

Also available on(2)

Vercel AI GatewayFree/1MMiniMax$0.15/1M
Compare all providers →

Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA