Application developers who access OpenAI through its long-running API will now have access to the company's latest full o1 model, rather than the months-old o1-preview.

OpenAI is bringing o1, its “reasoning” AI model, to its API — but only for certain developers, to start. Starting Tuesday, o1 will begin rolling out to devs in OpenAI’s “tier 5” usage ...

OpenAI has made its gpt-image-1 image generation model available through its public API, giving software developers direct access to the same system that powers image creation in ChatGPT. The release ...

OpenAI said on Monday that it would soon wind down the availability of GPT-4.5, its largest-ever AI model, via its API. GPT-4.5 was released only in late February.