# GPT-4.1 Nano API Pricing

As of October 10, 2026, GPT-4.1 Nano costs $0.10 per 1M input tokens and $0.40 per 1M output tokens on OpenAI, with cache reads at $0.025 per 1M tokens. It has a 1,047,576-token context window and returns up to 32,768 tokens per response.

- Page: https://models.litellm.ai/models/gpt-4.1-nano
- Lab: OpenAI
- LiteLLM model name: `gpt-4.1-nano`
- Context window: 1,047,576 tokens
- Max output: 32,768 tokens
- Added to LiteLLM: April 2025
- Deprecation date: October 23, 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 |
|---|---|---|---|---|---|---|---|
| OpenAI | `gpt-4.1-nano` | $0.10 | $0.40 | $0.025 | – | – | 1M |
| OpenAI (snapshot 2025-04-14) | `gpt-4.1-nano-2025-04-14` | $0.10 | $0.40 | $0.025 | – | – | 1M |
| OpenAI (fine-tuned, snapshot 2025-04-14) | `ft:gpt-4.1-nano-2025-04-14` | $0.20 | $0.80 | $0.05 | – | – | 1M |
| Azure OpenAI | `azure/gpt-4.1-nano` | $0.10 | $0.40 | $0.025 | – | – | 1M |
| Azure OpenAI (snapshot 2025-04-14) | `azure/gpt-4.1-nano-2025-04-14` | $0.10 | $0.40 | $0.025 | – | – | 1M |
| Replicate | `replicate/openai/gpt-4.1-nano` | $0.10 | $0.40 | – | – | – | – |
| Vercel AI Gateway | `vercel_ai_gateway/openai/gpt-4.1-nano` | $0.10 | $0.40 | $0.025 | – | – | 1M |
| Azure OpenAI (eu) | `azure/eu/gpt-4.1-nano` | $0.11 | $0.44 | $0.028 | – | – | – |
| Azure OpenAI (us) | `azure/us/gpt-4.1-nano` | $0.11 | $0.44 | $0.028 | – | – | – |
| Azure OpenAI (us, snapshot 2025-04-14) | `azure/us/gpt-4.1-nano-2025-04-14` | $0.11 | $0.44 | $0.028 | – | – | 1M |

## Cost examples

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

- OpenAI: $0.40
- Azure OpenAI: $0.40
- Replicate: $0.40
- Vercel AI Gateway: $0.40
- OpenAI batch: $0.20

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

- OpenAI: $1.08
- Azure OpenAI: $1.08
- Replicate: $1.08
- Vercel AI Gateway: $1.08

## Features

Supported: Function calling, Parallel tool calls, Structured output, Image input, PDF input, Prompt caching.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="gpt-4.1-nano",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does GPT-4.1 Nano cost?

GPT-4.1 Nano costs $0.10 per 1M input tokens and $0.40 per 1M output tokens on OpenAI, with cache reads at $0.025 per 1M tokens. Batch requests cost $0.05 per 1M input tokens and $0.20 per 1M output tokens.

### What is the context window of GPT-4.1 Nano?

GPT-4.1 Nano has a 1,047,576-token context window and returns up to 32,768 tokens per response.

### Which providers offer GPT-4.1 Nano?

GPT-4.1 Nano is available from 4 providers through LiteLLM: OpenAI, Azure OpenAI, Replicate and Vercel AI Gateway.

### How do I call GPT-4.1 Nano with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gpt-4.1-nano", 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 GPT-4.1 Nano support?

GPT-4.1 Nano supports function calling, parallel tool calls, structured output, image input, PDF input and prompt caching.

### When did LiteLLM add GPT-4.1 Nano?

GPT-4.1 Nano was added to LiteLLM's model price file in April 2025.

### Is GPT-4.1 Nano being deprecated?

OpenAI lists a deprecation date of October 23, 2026 for gpt-4.1-nano.

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