OpenAI API Paid
GPT, reasoning, image, audio and realtime models with the Responses API
What is OpenAI API?
The OpenAI platform gives developers access to the GPT and o-series reasoning models, image and audio models, embeddings, the Responses API with built-in tools and an Agents SDK. Pricing is per token with no minimum.
Pros
- Broadest model line-up
- Built-in tools for search, files and computer use
- Excellent docs and SDKs
Cons
- Rate limits scale with spend tier
- Model deprecations require migrations
OpenAI API pricing
Free plan, pay as you go. Prices change often, so confirm on the official pricing page.
Best OpenAI API alternatives
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OpenRouter Paid
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Compare OpenAI API
Verdict
OpenAI API scores 9.2/10 in our llm apis & developer platforms ranking. It is one of the strongest picks in its category.