OpenAI’s next Codex model codenamed “Caribou” likely built on the latest GPT-5.2

Key Highlights: OpenAI is under immense pressure to catch up with the progress Google and Anthropic is making lately in terms of performance and accuracy of their models. That’s the main reason why it released the latest GPT-5.2 model after reports from last week hinted that Gemini 3 has caught the attention of Sam Altman since the launch. Well, OpenAI describes GPT-5.2 as its “most capable model series yet for professional knowledge work,” and that’s not an exaggeration to be honest. You can read more about it here. Fast forward to today, a new report from Testing Catalog suggests that […]