MiniMax-M2.1 API
About
Build advanced reasoning agents with MiniMax-M2.1, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers available completely free of charge, native tool calling support, open weights architecture. Access MiniMax-M2.1 via the MiniMax Token Plan (minimax.io) API with up to 131K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsOpen
Limits
Context Window
205K
Tokens
Input Limit
205K
Tokens
Max Output
131K
Tokens
Pricing
Standard (per 1M tokens)
Input
Free
Output
Free
Caching (per 1M tokens)
Read
Free
Write
Free
Frequently Asked Questions
MiniMax-M2.1 by MiniMax Token Plan (minimax.io) costs Free per 1M input tokens and Free per 1M output tokens. Cached reads cost Free per 1M tokens. Cache writes cost Free per 1M tokens.
Model Details
ID
MiniMax-M2.1
Provider
MiniMax Token Plan (minimax.io)Family
minimax
Release Date
Dec 23, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/anthropic
Environment Variables
MINIMAX_API_KEY
API Base URL
https://api.minimax.io/anthropic/v1