Close followers of OpenAI's model releases are probably tired of hearing about GPT-5, the next big step in the company's line of flagship large language models . It's been expected seemingly all year. But the hints are getting very strong.

Already this week, the ChatGPT -maker has unveiled its open-weights models -- gpt-oss -- that have also been teased for months. These models, unlike the GPT models and other popular LLMs like Google's Gemini , offer transparency into how they work and think. Just before that release, however, CEO Sam Altman hinted that something bigger was coming too: "something big-but-small today," he posted on X, "and then a big upgrade later this week."

Wednesday night, the hints grew even stronger. OpenAI posted on X: "LIVE5TREAM THURSDAY 10AM PT." Yes, th

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