# Claude Mythos 5.2 Fast API Pricing

As of November 10, 2026, Claude Mythos 5.2 Fast costs $16.00 per 1M input tokens and $80.00 per 1M output tokens on Azure AI Foundry, with cache reads at $0.40 and cache writes at $20.00 per 1M tokens. It has a 1,000,000-token context window and returns up to 128,000 tokens per response.

- Page: https://models.litellm.ai/models/claude-mythos-5-2-fast
- Lab: Anthropic
- LiteLLM model name: `azure_ai/claude-mythos-5-2-fast`
- Context window: 1,000,000 tokens
- Max output: 128,000 tokens
- Added to LiteLLM: November 10, 2026
- Prices updated: November 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Azure AI Foundry | `azure_ai/claude-mythos-5-2-fast` | $16.00 | $80.00 | $0.40 | – | – | 1M |

## Cost examples

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

- Azure AI Foundry: $72.00

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

- Azure AI Foundry: $176.00

## Features

Supported: Function calling, Structured output, Image input, PDF input, Reasoning, Prompt caching, Computer use.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="azure_ai/claude-mythos-5-2-fast",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## Cost calculator

10,000 requests a day with 1,000 input and 500 output tokens each, at Azure AI Foundry's price: $0.056 per request, $560 per day, $16,800 per month (30 days). Try other numbers at https://models.litellm.ai/calculator?model=claude-mythos-5-2-fast

## FAQ

### How much does Claude Mythos 5.2 Fast cost?

Claude Mythos 5.2 Fast costs $16.00 per 1M input tokens and $80.00 per 1M output tokens on Azure AI Foundry, with cache reads at $0.40 and cache writes at $20.00 per 1M tokens.

### What is the context window of Claude Mythos 5.2 Fast?

Claude Mythos 5.2 Fast has a 1,000,000-token context window and returns up to 128,000 tokens per response.

### Which providers offer Claude Mythos 5.2 Fast?

Claude Mythos 5.2 Fast is available from Azure AI Foundry through LiteLLM, using the model name azure_ai/claude-mythos-5-2-fast.

### How do I call Claude Mythos 5.2 Fast with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="azure_ai/claude-mythos-5-2-fast", 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 Claude Mythos 5.2 Fast support?

Claude Mythos 5.2 Fast supports function calling, structured output, image input, PDF input, reasoning, prompt caching and computer use.

### When did LiteLLM add Claude Mythos 5.2 Fast?

Claude Mythos 5.2 Fast was added to LiteLLM's model price file on November 10, 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.