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IFEval only · 12 setups · 1 of 6 compared benchmarks

Claude Code · claude-sonnet-5-5 · as published

anthropic

as published

Its score and figures

Every figure the leaderboard's table prints for this setup.

Its score and figures
rank in group1–12
Score78.7 pts76.2–80.2 pts
Pass rate98.6%95.7–100.0%98.6% · 69 of 69 graded
Efficiency19.115.5–21.3
cost2.4×
tokens1.9×
time1.1×
Coverage1/6
Runs69

73.9 + 1.2 + 0.9 + 2.6 ≈ 78.7 (outcome + cost + tokens + time)

  • pass rate on each benchmark's own grader
  • cost
  • tokens
  • time
  • not measured
First run
2026-10-03
Last run
2026-10-03
did not finish (scored as a fail)
1
Tasks with no grade
0

On each benchmark

Each benchmark it ran: its status, pass rate, spend and spend per pass. The studies behind them are its evidence, below.

IFEval

78.7 pts

IFEval: 98.6% · 69 of 69 graded · scored

cost
2.4× the typical spend per passing run1.5% of this setup's cost here went to runs that did not pass or were not graded; efficiency does not price it$0.03 per pass($0.02–$0.03)27% went to the costliest 10% of attempts (7 of 69)
tokens
1.9× the typical spend per passing run2.7% of this setup's tokens here went to runs that did not pass or were not graded; efficiency does not price it32k per pass(29.9k–35k)15% went to the costliest 10% of attempts (7 of 69)of which 85% cache reads and 11% fresh input
time
1.1× the typical spend per passing run0.8% of this setup's time here went to runs that did not pass or were not graded; efficiency does not price it24.8s per pass(21.8s–29.2s)22% went to the costliest 10% of attempts (7 of 69)

Efficiency and spend per pass can order setups differently: efficiency compares the typical (median) passing run, task by task, while spend per pass averages every attempt, so a few very expensive runs, passing or not, count in full; and spend per pass also counts the attempts that failed or did not finish, and divides by the pass rate. A setup is called the most frugal only where both put it first and both separate it from every other setup.

Evidence

Every published study its runs come from.