ChatGPT API vs Grok API
Two Artificial intelligence APIs with a free plan, compared field by field.
| ChatGPT API — GPT-4, o1 and o3 integration | Grok API — direct access | |
|---|---|---|
| Endpoints | 1 | 5 |
| Latency | — | — |
| Service level | — | — |
| Free tier | $0.00 | $0.00 |
| Paid from | $9.99 | $19.99 |
| Updated | 2025-11-26 | 2026-05-26 |
ChatGPT API — GPT-4, o1 and o3 integration
One endpoint onto the OpenAI model family, including GPT-4 and the reasoning models, for chatbots, support automation and workflow tools.
It removes the SDK and key-management step for products that only need the call.
Grok API — direct access
A REST endpoint onto Grok with no wrapper prompt and no added filtering of its own.
It is aimed at developers who want the model's own behaviour rather than a vendor's interpretation of it.
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