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 cost-effective pricing at $0.55/1M input and $2.19/1M output tokens, native tool calling support, open weights architecture. Access MiniMax-M2.1 via the Synthetic 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
$0.55
Output
$2.19
Frequently Asked Questions
MiniMax-M2.1 by Synthetic costs $0.55 per 1M input tokens and $2.19 per 1M output tokens.
Model Details
ID
hf:MiniMaxAI/MiniMax-M2.1
Provider
SyntheticFamily
minimax
Release Date
Dec 23, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
SYNTHETIC_API_KEY
API Base URL
https://api.synthetic.new/openai/v1