registry/compare
Role then format against Source span citation
Both scored on the same cases against claude-fable-5, same judge. The intervals tell you whether the gap is real or noise.
suite reasoning-chainmodel claude-fable-5n=168 public cases each
role-then-format
v2 by @ilya91.7
86.5 to 95.0 · holdout 90.3
source-span-cite
v2 by @marek93.8
87.7 to 96.9 · holdout 93.8
Intervals overlap. The 2.1 point gap is not significant at this sample size.
Metricrole-then-formatsource-span-citeBetter
Public score91.793.8right
Holdout score90.393.8right
Interval width8.59.2left
Cost per run$1.850$1.138right
Median latency2.4s2.1sright
Sample size168112left
Reading this verdict
- Overlap
- Two entries are only meaningfully apart when their confidence intervals do not overlap. A higher number with an overlapping interval is a coin flip, not a win.
- Holdout
- The public score can be gamed by tuning to visible cases. A gap between public and holdout is the tell.
- Reproduce
- evalness compare \ role-then-format source-span-cite \ --model claude-fable-5