A couple of days after announcing its first open-weight models in six years, OpenAI is releasing the long-awaited GPT-5. What’s more, you can start using it today, even if you’re a free user. With GPT-5, the company is touting across-the-board enhancements, claiming the model is its best yet when it comes to coding, writing, safety, accuracy and more.
“GPT-5 is the first time that it really feels like you’re talking to an expert in any topic,” said OpenAI CEO (and hypeman) Sam Altman during a press briefing the company held before today’s announcement. “It reminds me of when the iPhone went from those giant, old pixel [screens] to the Retina Display, and then I went back to using one of those big pixelated things and I was like, ‘Wow, I can’t believe how bad we had it.'”
At the start of the year, Altman said GPT-5 would offer a unified experience for users, and the new model delivers on that promise. For the first time, OpenAI’s default offering is a reasoning model, meaning the system is programmed to tackle complex problems by breaking them into smaller parts. Previously, if you wanted to force ChatGPT to use one of OpenAI’s reasoning models, you had to select the “Think Longer” option from the prompt bar. This meant most free users didn’t even know OpenAI had more capable models. With GPT-5, the company has significantly simplified the ChatGPT experience.
On the consumer side of things, there are only three versions of the new model. One of those — GPT-5 mini — only crops up when free and Plus users run into their regular GPT-5 usage limit. The other variant, GPT-5 Pro, is, as the name suggests, only available to subscribers of the company’s $200 per month Pro plan. On the subject of query limits, Plus users can use GPT-5 “significantly” more than those with a free account, while Pro customers can chat with GPT-5 as much as they want.
A graphic highlighting some of the enhanced capabilities of GPT-5
(OpenAI)
When it comes to reasoning, GPT-5 is much faster than o3, OpenAI’s previous state-of-the-art AI. “It’s so fast that I’ve had the psychological experience of wondering, like, is it really thinking enough? And then it gives a great answer,” said Altman. Perhaps more importantly, it suffers from fewer hallucinations, with OpenAI claiming the model delivers more accurate answers than any of its previous reasoning systems. For instance, when thinking, GPT-5 is approximately 80 percent less likely to include a factual error in its answer than o3. We’ll…