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Kimi K3.1 Pro Highspeed API pricing and integration

The Highspeed variant of Kimi K3.1 Pro uses its own model ID and rates, with a 1M-token context window and OpenAI-compatible Chat Completions.

Use this model via API

This model is available through the paid API. Create an account, add funds and create an API key. The $2 Playground credit is for supported text models only, not API calls.

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OpenAI compatibleReasoningCodingFast
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Paste the model ID, live price, base URL and a working request straight into your coding agent.

Moonshot AI
kimi-k3.1-pro-highspeed
Input / 1M tokens$4.00$4.00
Output / 1M tokens$20$20
Cached input / 1M tokens$0.200$0.200
Model ID
kimi-k3.1-pro-highspeed
Provider
Moonshot
Endpoint
/v1/chat/completions
Task
chat
Context window
1M tokens
Input modalities
Text
Output modalities
Text

What is Kimi K3.1 Pro Highspeed?

Call /v1/chat/completions with model kimi-k3.1-pro-highspeed; Highspeed is a separate model ID, not a request flag on kimi-k3.1-pro. It retains the 1M-token context and always-on thinking, with reasoning_effort controlling reasoning intensity. Official input and output rates are $4 and $20 per million tokens, twice the standard variant's rates. Cache reads remain $0.20 per million tokens; cache writes are $4 for a 5-minute TTL or $8 for a 1-hour TTL. Compare measured latency and total token cost with the standard variant before selecting Highspeed for your application.

Drop-in OpenAI compatibility

Works with the OpenAI SDKs, LangChain, Cursor, Cline and any tool that accepts a custom base URL.

Streaming and tool use

Streaming, tools and structured output depend on the model and upstream channel. Check the required feature on your channel before production use.

Live usage pricing

The rates come from Crazyrouter's billing table; discounts vary by model.

One account for every model

Compare against Claude, GPT, Gemini, DeepSeek and more without juggling vendor accounts.

Kimi K3.1 Pro Highspeed API quickstart

Point your OpenAI SDK at https://api.crazyrouter.com/v1 and set the model to kimi-k3.1-pro-highspeed.

cURL
curl https://api.crazyrouter.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $CRAZYROUTER_API_KEY" \
  -d '{
    "model": "kimi-k3.1-pro-highspeed",
    "messages": [{"role": "user", "content": "Explain the tradeoffs of this architecture decision."}],
    "stream": true
  }'

kimi-k3.1-pro-highspeed: provider price comparison

Input (dark) / output (light), USD per 1M tokens. Listed providers do not identify Crazyrouter upstream routes.

Comparison snapshot from LiteLLM and manually maintained entries; collection date is not independent vendor verification. No cache hits assumed in these estimates. Pricing sources

Reference$4.00 / $20Crazyrouter$4.00 / $20

Estimated workload costs

Chatbot · per month
$920
100k conversations × 800 input / 300 output tokens
Documents · per 1k documents
$62
8k input / 1.5k output tokens each
Coding · per developer / month
$16
2M input / 400k output tokens

Best use cases

Coding assistants and agent loops with tool calls
Long-document analysis, summarisation and extraction
Customer-facing chat with streaming responses
Evaluation and A/B tests across model vendors
Batch classification, tagging and structured extraction
Technical writing, design docs and code review

Works with developer tools

OpenAI SDKs

Set base_url to https://api.crazyrouter.com/v1 and model to kimi-k3.1-pro-highspeed.

Cursor, Cline, Continue

Add Crazyrouter as a custom OpenAI-compatible provider and pick the model from the list.

LangChain / LlamaIndex

Use the OpenAI chat model class with the Crazyrouter base URL.

Claude Code / Codex CLI

CLI compatibility requires the native protocol and a supported model/channel. Follow the integration guide and verify compatibility before use.

Kimi K3.1 Pro Highspeed FAQ

What base URL do I use for Kimi K3.1 Pro Highspeed?

https://api.crazyrouter.com/v1. Chat completions go to /v1/chat/completions.

How is usage billed?

Per token, at the input/output rates shown on this page. Your balance is debited per request; there is no subscription.

Does it support streaming and function calling?

Support varies by model and upstream channel. The request example is a starting point; verify streaming, tools and structured output separately before production use.

Can I switch to another model later?

Change the model string. The same key works for every model in the Crazyrouter catalogue.

Where do I see the current price?

The pricing page lists live rates for every model, including group discounts if you are logged in.