MiniMax: minimax-m2.1-lightning:free

minimax-m2.1-lightning:free
196.6K context8.2K outReasoningCacheStructuredSystem msg
Released Dec 23, 2025Knowledge cutoff 2025Updated Dec 23, 2025

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 capability while maintaining exceptional latency, scalability, and cost efficiency. Compared to its predecessor, M2.1 delivers cleaner, more concise outputs and faster perceived response times. It shows leading multilingual coding performance across major systems and application languages, achieving 49.4% on Multi-SWE-Bench and 72.5% on SWE-Bench Multilingual, and serves as a versatile agent “brain” for IDEs, coding tools, and general-purpose assistance. To avoid degrading this model's performance, MiniMax highly recommends preserving reasoning between turns. Learn more about using reasoning_details to pass back reasoning in our docs.

Mode chatTokenizer OtherQuantization fp8MiniMaxAI/MiniMax-M2.1

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Pricing

Input price
$0.00/ 1M tokens
Output price
$0.00/ 1M tokens
Context window 196.6K tokensCompatible endpoints openaiVendor MiniMax

Performance

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Usage & Ranking

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Supported parameters

All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.

ParameterProvidersDefault
frequency_penaltySome providersNot sent by default
include_reasoningAll providers-
max_tokensAll providers-
presence_penaltySome providers-
reasoningAll providers-
repetition_penaltySome providers-
response_formatAll providers-
seedSome providers-
stopSome providers-
temperatureAll providers1
tool_choiceAll providers-
toolsAll providers-
top_kSome providers-
top_pAll providers0.9

Frequently asked questions

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