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Moonshot: kimi-k3

kimi-k3
1M context943.7K outReasoningToolsVisionVideoCacheStructured
Released Jul 16, 2026Knowledge cutoff Nov 2025Updated Aug 26, 2026

Kimi K3 is Kimi's most powerful flagship model to date, boasting 2.8 trillion parameters. Built upon the KDA hybrid linear attention mechanism (Kimi Delta Attention) and attention residuals technology, it natively supports visual understanding and features a 1 million token context window. It is the world's first open-source model with over 3 trillion parameters, designed for cutting-edge intelligent scenarios such as long-range programming, knowledge work, and reasoning.

Mode chatTokenizer OtherQuantization mxfp4moonshotai/Kimi-K3

Pricing

Input price
$0.06/ 1M tokens$3.0098% off
Output price
$0.28/ 1M tokens$15.0098% off
Compatible endpoints openaiVendor Moonshot

Uptime

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_penaltyAll providersNot sent by default
include_reasoningAll providers-
logit_biasSome providers-
logprobsAll providers-
max_tokensAll providers-
min_pSome providers-
presence_penaltyAll providersNot sent by default
reasoningAll providers-
reasoning_effortAll providers-
repetition_penaltyAll providersNot sent by default
response_formatAll providers-
seedAll providers-
stopAll providers-
structured_outputsAll providers-
temperatureAll providersNot sent by default
tool_choiceAll providers-
toolsAll providers-
top_kAll providersNot sent by default
top_logprobsAll providers-
top_pAll providers0.95

Frequently asked questions

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