Did GPT-5.6 Sol Really Beat Fable 5, Or Just Win The Easier Crown?
OpenAI's GPT-5.6 Sol and Anthropic's Claude Fable 5 split the coding crown, with Sol topping one agentic benchmark at 88.8% while Fable 5 holds the multi-file lead. Key Points: GPT-5.6 Sol leads Terminal-Bench 2.1 at 88.8%, ahead of Claude Fable 5's 83.4%. Fable 5 still tops SWE-Bench Pro at 80.3%,