First Third-Party Scores for Claude Fable 5.2: Cursor Says It Tops CursorBench at 60% on Max Effort and 56.9% at Default (Fable 5.1: 49.2%); Perplexity Reports a Record 0.851 on WANDR at $14.51 per Task
Within an hour of Anthropic releasing Claude Fable 5.2, Cursor and Perplexity both shipped the model and posted results from their in-house evals. Cursor's official account says Fable 5.2 scores 56.9% on CursorBench at default (High) effort, up from 49.2% for Fable 5.1, and 60% at max effort, the top score on the board. Cursor's chart puts the default setting at about $9.70 average cost per task. Perplexity's official account says Fable 5.2 set a record 0.851 on its WANDR benchmark at $14.51 per task, on the performance-cost Pareto frontier; Gemini 4 Argon scores 0.802 ($7.88), GPT-6 Astra 0.735 and Fable 5.1 0.684. Both are vendor-run evals, not independent public benchmarks.
Key Takeaways
- CursorBench (Cursor's own eval): Fable 5.2 scores 56.9% at default effort vs 49.2% for Fable 5.1, a gain of about 7.7 points; max effort reaches 60%, the top of the board
- Cost (per Cursor's chart): default High effort averages about $9.70 per task; max effort costs far more, roughly 3x the default in the chart
- WANDR (Perplexity's own eval): Fable 5.2 hits a record 0.851 at $14.51 per task; Gemini 4 Argon 0.802 / $7.88, GPT-6 Astra 0.735 / $13.34, Fable 5.1 0.684 / $13.16
- Availability: selectable in Cursor now; in Perplexity Computer for Pro and Max subscribers, and in Search for Max only
- Caveat: both are vendor-built evals whose task sets and methods are not fully public, so treat them as indicative
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