The AI throne has shifted! GPT-5.5 just outperformed Claude Fable 5 in the "Agents' Last Exam," proving superior in autonomous task planning and rapid debugging.

GPT-5.5 Score: 92.4 Claude Fable 5 Score: 88.9 OpenAI’s focus on inference-time compute is winning. For enterprise workflows, the future is autonomous.

GPT-5.5 is officially the new gold standard for industrial-grade AI efficiency.