OpenAI has released its long-awaited GPT-5 AI model, making it free to use for anybody as of today.

The Sam Altman-led company calls it "our smartest, fastest, and most useful model yet," making it "more useful responses across math, science, finance, law, and more."

"GPT-5 is the first time that it really feels like you're talking to an expert in any topic," Altman said during a press briefing today, likening it to Apple's iPhone switching to high-density Retina displays, whose individual pixels could no longer be made out by the naked eye.

Altman didn't hold back, asserting that it's the "best model in the world at coding" and "writing," as well as "health care, and a long list of things beyond that."

GPT-5 is a "reasoning" model, which means that it takes an iterative approach to pr

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