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...
Capabilities
Modalities
Quick stats
Performance
Supported parameters
| Parameter | Always | Default |
|---|---|---|
| frequency_penalty | (do not send) | |
| include_reasoning | - | |
| logit_bias | - | - |
| logprobs | - | - |
| max_tokens | - | |
| min_p | - | - |
| presence_penalty | - | |
| reasoning | - | |
| repetition_penalty | - | |
| response_format | - | |
| seed | - | |
| stop | - | |
| structured_outputs | - | |
| temperature | (do not send) | |
| tool_choice | - | |
| tools | - | |
| top_k | - | |
| top_logprobs | - | - |
| top_p | (do not send) |
Pricing
| Input price | $1.00 · 1M tokens |
| Output price | $4.16 · 1M tokens |
| Context window | 262.1K tokens |
| Compatible endpoints | openai, anthropic |
| Vendor | Moonshot |
Call kimi-k2-thinking from your code
Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.
curl https://api.unorouter.com/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kimi-k2-thinking",
"messages": [{"role": "user", "content": "Hello!"}]
}'Frequently asked questions
How much does kimi-k2-thinking cost per 1M tokens?
Input is priced at $1.00 per 1M tokens, output at $4.16 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access kimi-k2-thinking via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=kimi-k2-thinking. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
What is the context window of kimi-k2-thinking?
kimi-k2-thinking supports a context window of 262.1K tokens, shared between your prompt and the model's response.
Similar models
Try kimi-k2-thinking now
Create an API key and start making requests in under a minute.