OpenAI API

by OpenAI

API access to GPT-4o, o3, and other OpenAI models via REST.

Free plan
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Pricing verified 2026-05-01. Always confirm current pricing on the vendor's website.

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Pricing plans

Plan Price Includes
Free Free $5 free credit
Pay-as-you-go Custom All models, Higher rate limits

Key features

Frequently asked questions

Pricing and features as of 2026-05-01.

How much does OpenAI API cost?

OpenAI API uses custom pricing. Contact the vendor for a quote.

Does OpenAI API have a free plan?

Yes, OpenAI API has a free plan.

What are the key features of OpenAI API?

Key features of OpenAI API include: GPT-4o access, Function calling, Structured outputs, Streaming, Batch API.