OpenAI API

Free tier

The most widely used AI API — access GPT-4o, DALL·E, Whisper, and Embeddings from OpenAI.

Free tier available·Technical·Powered by OpenAI·API available

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Key strengths

GPT-4oAssistants APIRealtime APIfine-tuningwidest SDK coverage

Free tier + paid plans

San Francisco, US

Founded 2023

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