MiniMax-M2.1

Parameters

229B

Published

Dec 23, 2025

MiniMax-M2.1 is an AI model developed by MiniMax (China), first published in December 2025. It works in the language domain, on tasks such as chat, language modeling/generation, code generation and 2 more.

Epoch AI has no training-compute estimate for this model. The model has 229,000,000,000 parameters.

Access: Open weights (restricted use). Its weights are openly available. Epoch AI rates the confidence of this record as confident.

Full record

Organization: MiniMax
Country of organization: China
Domain: Language
Task: Chat, Language modeling/generation, Code generation, Tool use, Agentic workflows
Parameters: 229,000,000,000
Model accessibility: Open weights (restricted use)
Open weights: Yes
Epoch confidence: Confident

Benchmark results

01	WebDev Arena	Arena Score	1391.6
02	ALE Bench	Performance	623.8
03	Terminal-Bench	Accuracy mean	0.37
04	Posttrainbench	Average (%)	0.09