MoonshotAI: Kimi K3.1 Pro · fastrouter

Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and the first in the K3.1 series, a post-trained version of Kimi K3 with substantially more post-training compute, built on the same Kimi Delta Attention and Attention Residuals architecture (K3: 2.8T total, 104B active parameters; Moonshot calls K3.1 Pro 3T-class). It has a 1M-token context window with flat pricing across the full window, accepts text and images, and returns text, with always-on reasoning (effort: low, high, or max; default max) that cannot be turned off. It is designed for long-horizon coding, agentic and tool-using workflows, and complex knowledge work, and is exposed through an OpenAI-compatible chat completions API. Moonshot has said full weights will be released by November 4, 2026.

Modelo base Todos los modelos de esta base Todos los modelos del proveedor al proveedor

Entrada, $/1M $2.00

Salida, $/1M $10.00

Lectura de caché $0.20

Escritura de caché —

Contexto 1 048 576

Salida máx. 1 048 576

Acepta imágenes, texto

Última comprobación 04.11.2026 12:00:14 UTC

Fuente página del proveedor

Alertas de precio

Inicia sesión para seguir el precio

API

API compatible con OpenAI: los SDK oficiales de OpenAI funcionan con esta URL base. Sustituye YOUR_API_KEY por tu clave del proveedor.

URL base de la API	`https://go.fastrouter.ai/api/v1`
Endpoint	`https://go.fastrouter.ai/api/v1/chat/completions`
ID del modelo	`moonshotai/kimi-k3.1-pro`

curl

curl https://go.fastrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "moonshotai/kimi-k3.1-pro", "messages": [{"role": "user", "content": "Hello!"}], "max_tokens": 256}'

Python

import requests

r = requests.post(
    "https://go.fastrouter.ai/api/v1/chat/completions",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "moonshotai/kimi-k3.1-pro",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ],
      "max_tokens": 256
    },
)
print(r.json())

JavaScript

const r = await fetch("https://go.fastrouter.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "moonshotai/kimi-k3.1-pro",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ],
    "max_tokens": 256
  }),
});
console.log(await r.json());

Solicitud (JSON)

{
  "model": "moonshotai/kimi-k3.1-pro",
  "messages": [
    {
      "role": "user",
      "content": "Hello!"
    }
  ],
  "max_tokens": 256
}

Respuesta (JSON)

{
  "id": "chatcmpl-...",
  "object": "chat.completion",
  "model": "moonshotai/kimi-k3.1-pro",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hi! How can I help?"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 12,
    "total_tokens": 21
  }
}

La dirección se toma de la lista de modelos del proveedor; compruébala con su documentación.

Documentación de la API del proveedor

Source: AI Rate Card, https://airatecard.com/es/c/offer%3Afastrouter%7Cmoonshotai/kimi-k3.1-pro, prices checked 2026-11-04; seller's page: https://fastrouter.ai

Datos técnicos

ID: offer:fastrouter|moonshotai/kimi-k3.1-pro