Moonshot: Kimi K3

Kimi‑K3 is Moonshot AI’s new flagship open‑weight MoE large model with 2.8 trillion total parameters. It features a 1‑million‑token ultra‑long context window and native vision multimodal input. Built on KDA hybrid linear attention architecture, it excels at large‑codebase processing, complex knowledge analysis and deep reasoning. Full weights are open‑sourced, supporting function‑call and structured output.

Modetext、image → text

Input price$3 per M tokens

Output price$15 per M tokens

Context length1048576 tokens

Listed at2026-07-17T00:00:00Z

Moonshot

Latency—

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Context length1048576 tokens

Max output1048576 tokens

Input price$3per 1M tokens

Output price$15per 1M tokens

Cache read$0.3per 1M tokens

Cache write$3per 1M tokens

Performance

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Code Example

curl ${API_BASE_URL}/v1/chat/completions \
  -H "Authorization: Bearer <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k3",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

Replace <YOUR_API_KEY> with the API key generated on your token management page.

Authentication

All requests must include the Authorization: Bearer <TOKEN> header.

Endpoint Path

POST

openai

Supported Parameters

ParameterTypeDefaultDescription

stringmaxControls Kimi K3 reasoning effort. K3 always uses reasoning mode.

Rate Limits

GroupRPMTPMRPD

RPM = requests per minute, TPM = tokens per minute, RPD = requests per day. Limits apply by token group.

Pricing

ProviderBilling typePrice summary

Moonshot

Per token

Input price$3per 1M tokens

Completion price$15per 1M tokens

Cache read price$0.3per 1M tokens

Cache write price$3per 1M tokens