OpenAI's GPT -5 has landed with a thud despite strong benchmark scores and praise from early testers.

Why it matters: A lot rides on every launch of a major new large language model, since training these programs is a massive endeavor that can require months or years and billions of dollars.

Driving the news: When OpenAI released GPT-5 last week, CEO Sam Altman promised the new model would give even free users of ChatGPT access to the equivalent of Ph.D-level intelligence. • But users quickly complained that the new model was struggling with basic tasks and lamented that they couldn't just stick with older models, such as GPT-4o.

Unhappy ChatGPTers took to social media, posting examples of GPT-5 making simple mistakes in math and geography and mocking the new model. • Altman went in

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