Morgan Stanley flagged that a major AI breakthrough is arriving in H1 2026. OpenAI's GPT-5.4 "Thinking" model scored 83% on GDPVal, a benchmark measuring performance on economically valuable tasks at or above human expert level. The firm warned that most industries are not prepared for the displacement and productivity effects this implies. Why it matters: GDPVal is the benchmark that links AI capability directly to economic output. Crossing the 80% threshold means these systems can now substitute for human experts in measurable, revenue-generating workflows.