Bug Hunt Bench details: Data and receipts for Fable 5.1 vs competitors
PawelHuryn · x · 2026-09-02
Bug Hunt Bench released detailed data and receipts verifying the performance of frontier coding models on real repositories with planted bugs.
Benchmarks Features:
- Blind-graded
- One prompt per repo
- Regularly updated
The leaderboard ranks models by the number of planted bugs fixed (out of 105) and provides visualizations comparing cost (logarithmic axis) and time (linear axis), illustrating the Pareto frontier of performance, speed, and cost across different models.
Related event: Anthropic's Fable 5.1 Tops Bug Hunt Bench, Beating GPT-5.6(4 posts)→
More from coding & agent
- Vicki Boykis: We need to be deleting more code in the AI era — vboykis · 2026-09-02
- Claude Fable 5.1 Replicates and Extends Research; Mythos Writes Custom Kernels — BenBlaiszik · 2026-09-02
- Daily Reading: Agent Teams, Context Caching, and New AI Tools — rseroter · 2026-09-02
- Cloudflare Agents emit OpenTelemetry traces, route directly to Braintrust for evals — ritakozlov · 2026-09-02
- User tries Octo.nvim: features are great but UX lacks feel — 4310sy · 2026-09-02
- Fable 5.1 hits 33k lines on delete code bench — Sauers_ · 2026-09-02