Kimi K3.1 Pro API

Model details

Context window

1.0M tokens

Max output

1.0M tokens

Input

Text, images

Output

Text

Capabilities

Reasoning, Vision, Tool calling, Streaming, JSON output

Interfaces

OpenAI-style Chat Completions, Anthropic-style Messages, OpenAI-style Responses

Why teams pick it

• Kimi K3.1 Pro for OpenAI-style Chat Completions, Anthropic-style Messages, OpenAI-style Responses.

Call Kimi K3.1 Pro

Kimi K3.1 Pro answers on any of the APIs below — pick the one your code already speaks and just swap in your Inferray key.

curl https://api.inferray.com/v1/chat/completions \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kimi-k3.1-pro",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ]
}'

curl https://api.inferray.com/v1/messages \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kimi-k3.1-pro",
  "max_tokens": 1024,
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ]
}'

curl https://api.inferray.com/v1/responses \
  -H "Authorization: Bearer inferray_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kimi-k3.1-pro",
  "input": "Hello"
}'

Use Kimi K3.1 Pro in your tools

Every coding agent below has a setup guide. Set the model to kimi-k3.1-pro.

• Claude Code
• Codex
• opencode
• Cline
• Roo Code
• Aider
• Continue

More from Moonshot AI

Alternatives to Kimi K3.1 Pro

• Claude Sonnet 5.5Anthropic's best balance of speed and intelligence.Anthropic
• GPT-6.1 SolNear-Astra performance at a fraction of the price.OpenAI
• GLM-4.5 XGLM-4.5 X for OpenAI-style Chat Completions, Anthropic-style Messages, OpenAI-style Responses.Z.ai

Questions about this model

How much does the Kimi K3.1 Pro API cost?

Kimi K3.1 Pro costs $2 per 1M input tokens and $10 per 1M output tokens on Inferray, and cached input is $0.2 per 1M. That is the list price, with no gateway fee on top.

Is there a free tier for Kimi K3.1 Pro?

No. You add credit and pay Kimi K3.1 Pro's list rate for each request — seats, projects, and API keys are free, and pay-as-you-go credit never expires.

Am I charged for failed requests?

No. A request that fails without returning a result is not billed. If a response fails part-way, the tokens already processed before the failure are charged.

Is Kimi K3.1 Pro included in Token Plans?

No. Kimi K3.1 Pro is pay-as-you-go only; Token Plans cover the other text models in the catalog.

Can I use Kimi K3.1 Pro in Claude Code?

Yes. Set ANTHROPIC_BASE_URL to https://api.inferray.com, ANTHROPIC_AUTH_TOKEN to your Inferray key, and ANTHROPIC_MODEL to kimi-k3.1-pro. The same key works in Codex, opencode, Cline, and other agents.

Does Kimi K3.1 Pro support tool calling and vision?

Kimi K3.1 Pro supports tool calling, image input, reasoning, JSON output and streaming on Inferray.

Is it the real Kimi K3.1 Pro?

Yes. A request for kimi-k3.1-pro is answered by Kimi K3.1 Pro from Moonshot AI, billed at its published list price. Inferray never substitutes a different or smaller model.