# OpenAI GPT-5.4 Nano API

> GPT-5.4 nano is the smallest and fastest tier of OpenAI's GPT-5.4 family, released in March 2026 with text and image input and text output. OpenAI recommends it for tasks where speed matters most, such as classification, data extraction, ranking and coding subagents that handle simpler supporting work. Choose it for high-volume pipelines; unlike GPT-5.4 mini, it does not support the computer use or tool search tools.

Source: https://www.sandbase.ai/models/openai/gpt-5.4-nano
API reference: https://www.sandbase.ai/models/openai/gpt-5.4-nano/docs

## Facts

- Provider: OpenAI
- Type: Language model
- Model ID: `openai/gpt-5.4-nano`
- Price: $0.20 per 1M input tokens, $1.25 per 1M output tokens
- Context window: 400K tokens, up to 128K output tokens
- Capabilities: chat, vision, reasoning, 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-5.4-nano",
  "input": "Hello",
  "max_output_tokens": 2048
}'
```

## FAQ

### How do I call OpenAI GPT-5.4 Nano through SandBase?

Create a SandBase API key, then send requests with the model ID "openai/gpt-5.4-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-5.4 Nano cost?

$0.20 per 1M input tokens and $1.25 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-5.4 Nano?

400K tokens of context, with up to 128K output tokens per response.

### How does OpenAI GPT-5.4 Nano score on benchmarks?

OpenAI GPT-5.4 Nano scores 20.7 on the Artificial Analysis Intelligence Index (v4.3), ranking #63 of 83 models on SandBase; Coding Index 56.1, Agentic Index 16.0. Source: Artificial Analysis, measured as GPT-5.4 nano (Xhigh).

### Which features does OpenAI GPT-5.4 Nano support?

OpenAI GPT-5.4 Nano supports vision (image input), reasoning, 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-5.4 Nano and the other models in the catalog; you do not need to sign up with OpenAI separately.