The tools are part of OpenAI’s new Responses API, which lets businesses develop custom AI agents that can perform web ...

When using Responses API to create an AI agent, developers can choose from two models: GPT-4o search and GPT-4o mini search.

While both ChatGPT-4o and ChatGPT-45 perform at a high level, GPT-4o consistently demonstrates better clarity, engagement and ...

Also: The billion-dollar AI company no one is talking about - and why you should care Perplexity claims Sonar scored higher than GPT-4o mini and Claude models on factuality and readability.