Kimi K2.8 Preview

A preview of Moonshot's next Kimi K2 release, offered for early evaluation. Behaviour and pricing may change before general availability; use Kimi K3 for production.

Get an API keyQuickstart
Input
$0.46
Output
$1.90
Cached input
—
Context
—
Family
Kimi

Pricing

USD per 1M tokens, charged from your prepaid balance. How billing works

Input$0.46
Output$1.90
Cached input$0

Estimated cost per request $0.00187

API

POST /v1/chat/completions

OpenAI-compatible. Use your BigModel.io key with any OpenAI SDK by changing the base URL.

Request example

Set BIGMODEL_API_KEY in your terminal to your API key, then run one of these. The Python and Node.js samples use the official OpenAI SDK.

curl https://bigmodel.io/v1/chat/completions \
  -H "Authorization: Bearer $BIGMODEL_API_KEY" \
  -H "Content-Type: application/json" \
  --data '{
  "model": "kimi-k2.8-preview",
  "messages": [
    {
      "role": "user",
      "content": "Hello!"
    }
  ]
}'

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Use in Claude Code, Cursor and other tools

Set the model to kimi-k2.8-preview after following the guide for your tool.

On BigModel.io

Model ID
kimi-k2.8-preview
Inputs
Text
Outputs
Text
Developer
Kimi