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OpenAI launches GPT-5.5, calling it its most powerful model yet

OpenAI released GPT-5.5 in May 2026, calling it the most capable AI model the company has ever built. The new model sits above GPT-4o and the earlier GPT-5 in OpenAI’s lineup, and the company is ...
Ars Technica

Call ChatGPT from any phone with OpenAI’s new 1-800 voice service

On Wednesday, OpenAI launched a 1-800-CHATGPT (1-800-242-8478) telephone number that anyone in the US can call to talk to ChatGPT via voice chat for up to 15 minutes for free. The company also says ...
Ars Technica

OpenAI’s API users get full access to the new o1 model

Application developers who access OpenAI through its long-running API will now have access to the company’s latest full o1 model, rather than the months-old o1-preview. The upgrade is one of a number ...