Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at...
Specs
moonshotai/kimi-k2-thinkingHow to use Kimi K2 Thinking in your app
The quickest way is through an API gateway such as OpenRouter, which uses the same format as the OpenAI API. Create a key, then send a request with the model ID moonshotai/kimi-k2-thinking:
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This model always redirects to the latest model in the Kimi family.
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Questions about Kimi K2 Thinking
What is Kimi K2 Thinking?
Kimi K2 Thinking is Moonshot AI’s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in...
How big is the context window of Kimi K2 Thinking?
Kimi K2 Thinking can read up to 262,144 tokens in one request, roughly 196,608 words.
How much does Kimi K2 Thinking cost?
Through OpenRouter, Kimi K2 Thinking costs about $0.60 / 1M tokens for input and $2.50 / 1M tokens for output. Prices change, so check before large jobs.
Is Kimi K2 Thinking open source?
Kimi K2 Thinking has open weights, so you can download and run it yourself, subject to its licence.
What can Kimi K2 Thinking take as input?
Kimi K2 Thinking accepts text and produces text.
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Specs and prices come from OpenRouter and the provider, and are refreshed daily. Last checked 6 Nov 2025.