# Grok 4.1 Fast Non Reasoning API Pricing

As of October 10, 2026, Grok 4.1 Fast Non Reasoning costs $0.20 per 1M input tokens and $0.50 per 1M output tokens from Azure AI Foundry, the lowest of 3 providers. It has a 128,000-token context window and returns up to 128,000 tokens per response.

- Page: https://models.litellm.ai/models/grok-4-1-fast-non-reasoning
- Lab: xAI
- LiteLLM model name: `azure_ai/grok-4-1-fast-non-reasoning`
- Context window: 128,000 tokens
- Max output: 128,000 tokens
- Added to LiteLLM: November 2025
- 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/grok-4-1-fast-non-reasoning` | $0.20 | $0.50 | – | – | – | 128K |
| Google Vertex AI | `vertex_ai/xai/grok-4.1-fast-non-reasoning` | $0.20 | $0.50 | $0.05 | – | – | 128K |
| Perplexity | `perplexity/xai/grok-4-1-fast-non-reasoning` | – | – | – | – | – | – |

## Cost examples

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

- Azure AI Foundry: $0.65
- Google Vertex AI: $0.65

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

- Azure AI Foundry: $2.10
- Google Vertex AI: $2.10

## Features

Supported: Function calling, Structured output, Image input, Prompt caching, Web search.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="azure_ai/grok-4-1-fast-non-reasoning",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Grok 4.1 Fast Non Reasoning cost?

Grok 4.1 Fast Non Reasoning costs $0.20 per 1M input tokens and $0.50 per 1M output tokens from Azure AI Foundry, the lowest of 3 providers.

### What is the context window of Grok 4.1 Fast Non Reasoning?

Grok 4.1 Fast Non Reasoning has a 128,000-token context window and returns up to 128,000 tokens per response.

### Which providers offer Grok 4.1 Fast Non Reasoning?

Grok 4.1 Fast Non Reasoning is available from 3 providers through LiteLLM: Azure AI Foundry, Google Vertex AI and Perplexity.

### How do I call Grok 4.1 Fast Non Reasoning with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="azure_ai/grok-4-1-fast-non-reasoning", 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 Grok 4.1 Fast Non Reasoning support?

Grok 4.1 Fast Non Reasoning supports function calling, structured output, image input, prompt caching and web search.

### When did LiteLLM add Grok 4.1 Fast Non Reasoning?

Grok 4.1 Fast Non Reasoning was added to LiteLLM's model price file in November 2025.

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