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29 JUL 2026 · Hacker News · 99 pts · 21 comments ↗

GPT-5.6 vs. Claude Fable 5 for Physical AI, which performs best?

Claude Fable 5 outperforms GPT-5.6-terra in a physical AI evaluation, achieving a weighted score of 0.889 compared to 0.786 for GPT-5.6-terra, with a cost per trial of $9.60 and 52 graded runs in total. AI summary

physical AI