# OpenAI GPT-4o (2024-05-13) API

> This is the pinned May 13, 2024 snapshot of OpenAI's GPT-4o, the original API release of the model, with text and image input and text output. It is intended for workloads that need a fixed, reproducible version of the launch-era GPT-4o rather than the moving GPT-4o alias. Later snapshots from August and November 2024 add Structured Outputs with JSON schemas and a larger output limit, so most fresh projects start with one of those.

Source: https://www.sandbase.ai/model/openai/gpt-4o-2024-05-13
API reference: https://www.sandbase.ai/model/openai/gpt-4o-2024-05-13/docs

## Facts

- Provider: OpenAI
- Type: Language model
- Model ID: `openai/gpt-4o-2024-05-13`
- Price: $5 per 1M input tokens, $15 per 1M output tokens
- Context window: 128K tokens, up to 4.1K 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-4o-2024-05-13",
  "input": "Hello",
  "max_output_tokens": 2048
}'
```

## FAQ

### How do I call OpenAI GPT-4o (2024-05-13) through SandBase?

Create a SandBase API key, then send requests with the model ID "openai/gpt-4o-2024-05-13" 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-4o (2024-05-13) cost?

$5 per 1M input tokens and $15 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-4o (2024-05-13)?

128K tokens of context, with up to 4.1K output tokens per response.

### Which features does OpenAI GPT-4o (2024-05-13) support?

OpenAI GPT-4o (2024-05-13) 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-4o (2024-05-13) and the other models in the catalog; you do not need to sign up with OpenAI separately.