GPT‑3.5 history and updates ChatGPT 3.5 was OpenAI’s first publicly available AI model, with the introduction of ChatGPT in November 2022. It powered the chatbot’s free tier with various ...

But when a Rockefeller team revisited a highly cited 2022 study, they found the evidence didn’t hold up. Key molecules shown in the original virus model were actually missing.

Chinese artificial intelligence startup DeepSeek released the first update to its hit R1 reasoning model in the early hours of Thursday, stepping up competition with U.S. rivals such as OpenAI.