MiniMax

MiniMax M2.1

minimax/minimax-m2.1
Model weightsReleased Dec 23, 2025Open Weights
ThinkingToolsopen weights

MiniMax-M2.1 is a lightweight, state-of-the-art large language model optimized for coding, agentic workflows, and modern application development. With only 10 billion activated parameters, it delivers a major jump in real-world...

Cost / 1M tokens

Low usage

$0.30

input

$0.03

cached input

$1.20

output

Context Window

205K

Up to 131K max output

Modalities

text → text

Other tokenizer

Quickstart & API

minimax/minimax-m2.1
Open the model picker in ChatOSS Desktop (Code, Kanban, or Chat) and select or paste this model ID.

Best for & Strengths

Key Strengths

Open weightsExtended reasoningTool & agent callingLong context window

Recommended Workloads in ChatOSS

  • Coding agents
  • Complex reasoning & debugging
  • Open-source AI workflows
Available in ChatOSS Code, Kanban Orchestrate, and Chat modes via Plus, Max, or BYOK.

Verified Evaluations

Benchmarks & Frontier Comparison

How MiniMax M2.1 compares against leading open-weight and proprietary frontier models across independent agentic coding and reasoning suites.

View full Top 40 Leaderboard →
Benchmark (Metric)MiniMax M2.1DeepSeek V4.1 FlashGLM 5.3Kimi K3.1 ProClaude Opus 5.5
Agentic & Software Engineering
ChatOSS Agentic Coding Index (%)—63.2%58.3%65%74.1%
SWE-Bench Verified (%)—91.5%95.4%94.8%97%
DeepSWE v1.1 (Pass@1 %)—77%69%73.5%74.2%
Vibe Code Bench v1.1 (%)—87.7%78.1%88.4%90.3%
Terminal-Bench 4.0 (%)—42.3%42%46.2%65.2%
Code Migration (%)—45.6%44.2%52%66.7%
Intelligence & Token Economics
Artificial Analysis Intelligence Index (0–100)20.939.544.855.157.6
Input Price (/ 1M tokens)$0.30$0.15$1.40$2.00$4.00
Output Price (/ 1M tokens)$1.20$0.60$4.40$10.00$20.00

Artificial Analysis Intelligence Index

Artificial Analysis

20.9

Design Arena: 3D

Design Arena · Rank #64 (57.5% win)

1162 Elo

Design Arena: Code Generation

Design Arena · Rank #64 (55.3% win)

1188 Elo

Design Arena: Data Visualization

Design Arena · Rank #57 (57% win)

1206 Elo

Design Arena: Game Dev

Design Arena · Rank #85 (50.4% win)

1134 Elo

Active Provider Endpoints (2)

Upstream inference providers serving MiniMax M2.1, with per-provider pricing, context limits, quantization, and 24-hour uptime.

ProviderInput / 1MOutput / 1MCache Read / 1MContextMax OutputQuantizationUptime (24h)
Minimaxcache
minimax
$0.30$1.20$0.03205K131K—100.0%
Minimaxcache
minimax/highspeed
$0.30$2.40$0.03205K131K—100.0%

Supported API Parameters

Parameters accepted by this model when called through ChatOSS or OpenRouter.

include_reasoningmax_tokensreasoningresponse_formattemperaturetool_choicetoolstop_p

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