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 ... performance than GPT-4.5 in key areas at a much lower ...

The biggest mistake people make when trying to get their ChatGPT API key is that they use the wrong URL. The key can't be found at chatgpt.com. Instead, point your browser to the OpenAI developer ...

OpenAI is also planning to replace its Assistants API with the Responses API in mid-2026. The company says it “incorporated key improvements into the Responses API” using the feedback ...