OpenAI pushes rapid model updates as regulators and banks test “hallucination resistance”

OpenAI released GPT-5.5 to paid subscribers just six weeks after GPT-5.4, highlighting a new cadence for continual, incremental frontier updates. OpenAI President Greg Brockman positioned GPT-5.5 as more intuitive with “hallucination resistance,” and testing at the Bank of New York is reportedly showing meaningful response-quality improvements for a highly regulated setting.