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LLM API
Moonshot AIText generationReleased October 23, 2026

Kimi K3.1 Pro HighSpeed

Kimi K3.1 Pro HighSpeed costs $4 per 1M input tokens and $20 per 1M output tokens on LLM API, with a 1.05M-token context window.

Pricing

Served by Moonshot AI, the only provider.

Kimi K3.1 Pro HighSpeed prices on LLM API
Input$4per 1M tokens
Output$20per 1M tokens
Cache read$0.2per 1M tokens
Cache write, 5 minutes$4per 1M tokens
Cache write, 1 hour$8per 1M tokens

Features

  • ToolsYes
  • Parallel tool callsNo
  • Image inputYes
  • ReasoningYes

    Levels: low, high, max

  • Prompt cachingYes
  • Structured outputsYes
  • JSON modeYes
  • StreamingYes
  • Web searchYes

Call Kimi K3.1 Pro HighSpeed

POST /v1/chat/completionsSet LLMAPI_KEY to your LLM API key.Chat Completions docs

import os

from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmapi.ai/v1",
    api_key=os.environ["LLMAPI_KEY"],
)

response = client.chat.completions.create(
    model="kimi-k3.1-pro-highspeed",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

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