SemiAnalysis Launches GDPx Leaderboard: Claude Fable 5.2 Debuts on Top at 16.4%
scaling01 · x · 2026-11-10
SemiAnalysis has launched GDPx, a leaderboard that averages model performance across 11 equally-weighted economic domains. Claude Fable 5.2 debuts at the top with 16.4%, well ahead of Claude Opus 5.5 at 12.0% and Gemini 4 Carbon at 10.9%.
Key details:
- The leaderboard also tracks cost per task and output tokens: Fable 5.2 costs $88/task and outputs 1.2M tokens — notably pricier, but with a commanding lead
- GPT-6 Astra ranks 4th at 9.6% ($53.99/task)
- Open models on the board include DeepSeek 4.1 Flash 1017 (5.4%, $0.94/task) and GLM 5.3 (2.7%, $11.79/task)
- Scoring mixes binary and continuous grading, averaged over 3 attempts per task
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