GPT-4o
OpenAI API for GPT models, speech, embeddings and agent workflows
Launched 85 months agoplatform.openai.com
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About GPT-4o
GPT-4o is OpenAI's fast, flexible model, available to developers through the OpenAI API platform. The same API covers the GPT-5 family, reasoning variants, multimodal generation, speech and embeddings. Builders get the Responses API, tool calling, structured outputs, batch processing, fine-tuning and SDKs, which makes it one of the most widely integrated AI APIs. Teams should plan for model choice, data retention settings, rate limits and pricing tiers in production. Free access is listed.
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