# Kimi K3.1 Pro API Pricing

As of October 25, 2026, Kimi K3.1 Pro costs $2.00 per 1M input tokens and $10.00 per 1M output tokens on Opencode GO, with cache reads at $0.20 and cache writes at $2.00 per 1M tokens. It has a 1,048,576-token context window and returns up to 131,072 tokens per response.

- Page: https://models.litellm.ai/models/kimi-k3.1-pro
- Lab: Moonshot AI
- LiteLLM model name: `opencode_go/kimi-k3.1-pro`
- Context window: 1,048,576 tokens
- Max output: 131,072 tokens
- Added to LiteLLM: October 24, 2026
- Prices updated: October 24, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Opencode GO | `opencode_go/kimi-k3.1-pro` | $2.00 | $10.00 | $0.20 | – | – | 1M |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- Opencode GO: $9.00

100 long-document requests with 100,000 input and 2,000 output tokens each:

- Opencode GO: $22.00

## Features

Supported: Function calling, Image input, Reasoning.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="opencode_go/kimi-k3.1-pro",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## Cost calculator

10,000 requests a day with 1,000 input and 500 output tokens each, at Opencode GO's price: $0.007 per request, $70.00 per day, $2,100 per month (30 days). Try other numbers at https://models.litellm.ai/calculator?model=kimi-k3.1-pro

## FAQ

### How much does Kimi K3.1 Pro cost?

Kimi K3.1 Pro costs $2.00 per 1M input tokens and $10.00 per 1M output tokens on Opencode GO, with cache reads at $0.20 and cache writes at $2.00 per 1M tokens.

### What is the context window of Kimi K3.1 Pro?

Kimi K3.1 Pro has a 1,048,576-token context window and returns up to 131,072 tokens per response.

### Which providers offer Kimi K3.1 Pro?

Kimi K3.1 Pro is available from Opencode GO through LiteLLM, using the model name opencode_go/kimi-k3.1-pro.

### How do I call Kimi K3.1 Pro with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="opencode_go/kimi-k3.1-pro", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does Kimi K3.1 Pro support?

Kimi K3.1 Pro supports function calling, image input and reasoning.

### When did LiteLLM add Kimi K3.1 Pro?

Kimi K3.1 Pro was added to LiteLLM's model price file on October 24, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change.