A new version of ChatGPT has arrived that OpenAI CEO Sam Altman promises will have Ph.D-level smarts.

OpenAI on Thursday announced the release of GPT‑5 , which it calls its "smartest, fastest and most useful model yet."

The artificial intelligence company that brought the world ChatGPT says its latest version of the AI-powered chatbot will be more accurate, have fewer hallucinations and offer more articulate writing capabilities for composing emails and reports, for example. GPT-5 will also excel at coding and answering health-related questions, the company said in a blog post .

A basic version of the new model is available for free, with paid options for higher usage also available.

On a call with reporters Wednesday previewing the new chatbot, Altman likened GPT-5 to a Ph.D.-leve

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