TopxAI · Model prices · Moonshot AI
Kimi K3.1 Pro API pricing
Model id kimi-k3.1-pro. $2.4 input / $12 output per 1M tokens on the lowest-priced route; every route is listed below. Prices are fixed in USD, charged from prepaid credit, and every request writes one usage-log row with the route and the charge.
Kimi K3.1 Pro by Moonshot AI: text and image input with a 1,048,576-token context for coding and agentic work. The official line retains its existing prices, now 120% of the Kimi list price. Reasoning is always enabled, with low, high and max modes; max is the default.
Prices by route
| Route | Input (USD / 1M tokens) | Output (USD / 1M tokens) | Cache read (USD / 1M tokens) | Cache write (USD / 1M tokens) | Cache write (1h) (USD / 1M tokens) |
|---|---|---|---|---|---|
| Provider list price (checked 2026-10-24) Cache write references use the default 5-minute TTL. | $2 | $10 | $0.2 | $2 | — |
| Official line | $2.4 | $12 | $0.24 | $2.4 | — |
Input, output and cache lanes bill per million tokens. A whole-request long-context row applies once the input context of a request reaches the threshold shown. An Auto-route key sends each request to the lowest-priced route that serves the model.
Endpoints
POST /v1/chat/completions: OpenAI Chat Completions (Bearer)POST /v1/responses: OpenAI Responses (Bearer)
Call kimi-k3.1-pro
Base URL https://ai.topxea.com/v1 for OpenAI-style SDKs, https://ai.topxea.com for the Anthropic SDK; the API key goes where the provider's key would go.
curl https://ai.topxea.com/v1/chat/completions \
-H "Authorization: Bearer $TOPXAI_API_KEY" \
-H "content-type: application/json" \
-d '{"model": "kimi-k3.1-pro", "messages": [{"role": "user", "content": "Say hello in one sentence."}]}'Related
- Kimi K3.1 Pro replaces Kimi K3 on TopxAI
- Codex CLI custom model provider: model_providers in config.toml for TopxAI
- Kimi K3.1 Pro
- TopxAI vs OpenRouter: what is the same and what differs
- Connect your SDK
- Shared pool, official line and auto route
- How requests are billed
- LLM API price calculator
- Every model's price
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