Fable 5.2
- Maker
- Anthropic
- Harness
- Claude Code 2.1.321
- Effort
- medium
- Runs
- 1 a task, 30 in all
- Run dates
- 9 Nov 2026
- Prices as of
- 9 Nov 2026, list
- Solved
- 26 of 30
- 87% · 2nd of 10
- Cost per fix
- $1.78
- 9th lowest of 10
- Time per run
- 1m51s
- median · 6th lowest of 10
- Lines to review
- 160
- median · 9th lowest of 10
All 30 tasks
Where it failed
Solved on every run: 26 tasks. Failed at least one run: 4 tasks.
| Task | Runs | Run 1 | All agents |
|---|---|---|---|
| Computer bidders hoard their fundsTypeScript · Bug fix | $1.51 · 3m26s · 103 lines385K tokens in · 18K out | 13 / 19 | |
| One provider's teams appear with nobody on themTypeScript · Bug fix | $1.62 · 2m41s · 323 lines479K tokens in · 17K out | 4 / 19 | |
| Pages load with their numbers blank once the season startsTypeScript · Bug fix | $1.35 · 1m53s · 60 lines615K tokens in · 8.0K out | 1 / 19 | |
| Hundreds of players missing from an importPython · Bug fix | $2.17 · 3m04s · 241 lines1.3M tokens in · 17K out | 0 / 19 |