# Fw DeepSeek V4.1 Flash API Pricing

As of October 10, 2026, Fw DeepSeek V4.1 Flash costs $0.375 per 1M input tokens and $1.50 per 1M output tokens on Azure AI Foundry, with cache reads at $0.008 per 1M tokens. It has a 1,000,000-token context window and returns up to 384,000 tokens per response.

- Page: https://models.litellm.ai/models/fw-deepseek-v4.1-flash
- LiteLLM model name: `azure_ai/FW-DeepSeek-V4.1-Flash`
- Context window: 1,000,000 tokens
- Max output: 384,000 tokens
- Added to LiteLLM: September 24, 2026
- Prices updated: October 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/FW-DeepSeek-V4.1-Flash` | $0.375 | $1.50 | $0.008 | – | – | 1M |

## Cost examples

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

- Azure AI Foundry: $1.50

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

- Azure AI Foundry: $4.05

## Features

Supported: Function calling, Reasoning, Prompt caching.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="azure_ai/FW-DeepSeek-V4.1-Flash",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Fw DeepSeek V4.1 Flash cost?

Fw DeepSeek V4.1 Flash costs $0.375 per 1M input tokens and $1.50 per 1M output tokens on Azure AI Foundry, with cache reads at $0.008 per 1M tokens.

### What is the context window of Fw DeepSeek V4.1 Flash?

Fw DeepSeek V4.1 Flash has a 1,000,000-token context window and returns up to 384,000 tokens per response.

### Which providers offer Fw DeepSeek V4.1 Flash?

Fw DeepSeek V4.1 Flash is available from Azure AI Foundry through LiteLLM, using the model name azure_ai/FW-DeepSeek-V4.1-Flash.

### How do I call Fw DeepSeek V4.1 Flash with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="azure_ai/FW-DeepSeek-V4.1-Flash", 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 Fw DeepSeek V4.1 Flash support?

Fw DeepSeek V4.1 Flash supports function calling, reasoning and prompt caching.

### When did LiteLLM add Fw DeepSeek V4.1 Flash?

Fw DeepSeek V4.1 Flash was added to LiteLLM's model price file on September 24, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json