OpenAI API
APIs for adding text, image, voice, reasoning, and agent capabilities to an application.
At a glance
- Good for
- AI app development · Agent integration
- Starting access
- Developer account and usage-based billing; API billing is separate from a ChatGPT subscription.
Platforms
API, Web
Common questions
Is OpenAI API free?
No. This listing is marked paid. A numeric price is not published here.
What platforms does OpenAI API run on?
OpenAI API lists API, Web.
Who makes OpenAI API?
OpenAI publishes OpenAI API.
When was OpenAI API last reviewed?
Official sources were reviewed on 2026-10-14.
What is OpenAI API?
APIs for adding text, image, voice, reasoning, and agent capabilities to an application.
Plans, access & official sources
Capabilities
Text and reasoning models · Image generation · Voice APIs · Responses API · Agents SDK · Search and tool integrations
- Pricing
- Paid
- Access
- API, Web
Developer account and usage-based billing; API billing is separate from a ChatGPT subscription.
Review scope & sources
Provider information reviewed; this is not a hands-on product evaluation.
Official links are shown in the Official sources section above.
Catalog details are informational, not a performance ranking. How we review.