# OpenAI GPT-4.1 Nano API

> GPT-4.1 nano is the fastest and smallest tier of OpenAI's GPT-4.1 series, released in April 2025 as a non-reasoning model with text and image input and text output. It keeps the 1M-token context window and the instruction-following and tool-calling focus of its siblings, and OpenAI points to low-latency tasks such as classification and autocompletion. Choose it for high-volume, simple workloads; GPT-4.1 mini or GPT-4.1 handle harder prompts better.

Source: https://www.sandbase.ai/models/openai/gpt-4.1-nano
API reference: https://www.sandbase.ai/models/openai/gpt-4.1-nano/docs

## Facts

- Provider: OpenAI
- Type: Language model
- Model ID: `openai/gpt-4.1-nano`
- Price: $0.10 per 1M input tokens, $0.40 per 1M output tokens
- Context window: 1M tokens, up to 32.8K output tokens
- Capabilities: chat, vision, structured output, function calling
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Responses API: `POST https://api.sandbase.ai/v1/responses`
- Chat Completions API: `POST https://api.sandbase.ai/v1/chat/completions`

```bash
curl -X POST https://api.sandbase.ai/v1/responses \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "openai/gpt-4.1-nano",
  "input": "Hello",
  "max_output_tokens": 2048
}'
```

## FAQ

### How do I call OpenAI GPT-4.1 Nano through SandBase?

Create a SandBase API key, then send requests with the model ID "openai/gpt-4.1-nano" to Responses API (/v1/responses) or Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.

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

$0.10 per 1M input tokens and $0.40 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.

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

1M tokens of context, with up to 32.8K output tokens per response.

### How does OpenAI GPT-4.1 Nano score on benchmarks?

OpenAI GPT-4.1 Nano scores 7.8 on the Artificial Analysis Intelligence Index (v4.3), ranking #78 of 83 models on SandBase; Coding Index 11.1. Source: Artificial Analysis, measured as GPT-4.1 nano.

### Which features does OpenAI GPT-4.1 Nano support?

OpenAI GPT-4.1 Nano supports vision (image input), function calling, structured output. See Specifications above for the full list.

### Do I need a separate OpenAI account?

No. One SandBase API key and balance gives you access to OpenAI GPT-4.1 Nano and the other models in the catalog; you do not need to sign up with OpenAI separately.