Kimi K3.1 Pro
Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window.
Model by Moonshot AI
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "moonshotai/kimi-k3.1-pro",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
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About
Use cases: code-generation, model-inference
Reviews
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Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $2 | $10 | $0.2 |
Price as of Oct 26, 2026 from OpenRouter. Prices change often; check before you rely on one.
- Provider
- Moonshot
- Model id
moonshotai/kimi-k3.1-pro- Context window
- 1,048,576 tokens (1M)
- Max output
- 943,718 tokens
- Input
- text, image, video
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Closed
- Released
- Oct 23, 2026
Details
- Auth
- API key
- License
- Proprietary
- Website
- www.moonshot.ai
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
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Cite this page
Kimi K3.1 Pro: price, context window, tool use. Agent Mart. https://agentmart.dev/models/moonshotai-kimi-k3-1-pro (last updated 2026-10-26)