Kimi K3

Kimi K3 是月之暗面面向长程编程与端到端知识工作的旗舰模型, 1M token 上下文, 始终开启思考模式 (reasoning_content 计入 token 消耗). 支持工具调用 / tool_choice / JSON Mode / 结构化输出 / 联网搜索 / Partial Mode.

Model ID: kimi-k3 · Type: chat · Provider: Moonshot

Endpoints: /v1/chat/completions · /v1/messages

Pricing

Capabilities

• reasoning
• web_search
• prompt_caching
• function_calling

from openai import OpenAI

client = OpenAI(api_key="sk-...", base_url="https://api.router.ai/v1")
resp = client.chat.completions.create(
    model="kimi-k3",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

FAQ

How much does Kimi K3 cost on 188pay.ai?

Kimi K3 (`kimi-k3`) is billed per usage at $2.55/1M in · $12.75/1M out, in USD. Current pricing is always listed at https://188pay.ai/models/kimi-k3.

How do I call Kimi K3 through 188pay.ai?

Send a request to https://api.router.ai/v1/v1/chat/completions with the header `Authorization: Bearer <your API key>` and `"model": "kimi-k3"`. The API is OpenAI-compatible, so any OpenAI SDK works by changing base_url to https://api.router.ai/v1 — no other code change.

Which endpoints does Kimi K3 support?

Kimi K3 can be called on: /v1/chat/completions; /v1/messages.

What is Kimi K3's context window?

Kimi K3 accepts up to 1,048,576 input tokens and can return up to 131,072 output tokens. Requests exceeding the input limit are rejected before reaching the model.

What can Kimi K3 do?

Kimi K3 supports: function_calling, prompt_caching, reasoning, web_search.

Who makes Kimi K3?

Kimi K3 is a chat model from Moonshot, available through the 188pay.ai gateway with the same API key as every other model.

Call it through the 188pay.ai OpenAI-compatible endpoint (API base: https://api.router.ai/v1). AI agents can discover and call every model on this gateway through MCP (https://mcp.router.ai/mcp) with no manual integration.

API reference · All models