> ## Documentation Index
> Fetch the complete documentation index at: https://docs.unifically.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Kimi K3.1 Pro

> Moonshot AI's Kimi K3.1 Pro language model. See supported inputs, parameters, pricing, response fields, and API examples.

Kimi K3.1 Pro is Moonshot AI's flagship language model, a post-trained Kimi K3 released October 23, 2026, with a 1M-token context window, 131k default output, and thinking on every request. `reasoning_effort` takes `low`, `high`, or `max` (default `max`); temperature and top\_p are fixed upstream.

Try it in the browser: [Kimi K3.1 Pro API playground](https://unifically.com/models/kimi-k3.1-pro). For a faster serving of the same weights, use `moonshotai/kimi-k3.1-pro-highspeed`.

## Model

```
moonshotai/kimi-k3.1-pro
```

| | |
| - | - |
| **Provider** | Moonshot AI |
| **Name** | Kimi K3.1 Pro |

## Supported Endpoints

All three API formats are supported:

* [Chat Completions](https://docs.unifically.com/api-reference/v1-chat-completions.md) — `POST /v1/chat/completions`
* [Responses](https://docs.unifically.com/api-reference/v1-responses.md) — `POST /v1/responses`
* [Messages](https://docs.unifically.com/api-reference/v1-messages.md) — `POST /v1/messages`

## Example

```bash theme={null}
curl -X POST https://api.unifically.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "moonshotai/kimi-k3.1-pro",
    "messages": [
      {"role": "user", "content": "Plan a migration from Express to Fastify for this service and list the risks in order."}
    ]
  }'
```

> [!NOTE]
>
> **Volume discounts** are available for almost all models. Reach out at [contact@unifically.com](mailto:contact@unifically.com) to discuss custom pricing.


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