Claude Fable 5.1 held on to the number one spot on Artificial Analysis’ Intelligence Index v4.2, and tied with OpenAI’s new model on the updated benchmarks 🏆.
What you need to know:
📊 Scores 57 on the v4.2 index, edging out GPT 6 Astra.
🔬 Achieves 52.6% on Terminal Bench