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IFEval only · 12 setups · 1 of 6 compared benchmarks

Aider · claude-haiku-4-5-20251001 · 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
Score70.2 pts62.0–78.2 pts
Pass rate71.0%60.9–81.2%71.0% · 69 of 69 graded
Efficiency67.763.3–70.9
cost0.49×
tokens0.21×
time1.1×
Coverage1/6
Runs69

53.3 + 6.0 + 8.3 + 2.6 = 70.2 (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)
0
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

70.2 pts

IFEval: 71.0% · 69 of 69 graded · scored

cost
0.49× the typical spend per passing run23.4% of this setup's cost here went to runs that did not pass or were not graded; efficiency does not price it$0.01 per pass($0.01–$0.01)22% went to the costliest 10% of attempts (7 of 69)
tokens
0.21× the typical spend per passing run27.3% of this setup's tokens here went to runs that did not pass or were not graded; efficiency does not price it3.9k per pass(3.4k–4.6k)14% went to the costliest 10% of attempts (7 of 69)cache split not recorded on 69 attempts
time
1.1× the typical spend per passing run26.8% of this setup's time here went to runs that did not pass or were not graded; efficiency does not price it30.2s per pass(26.3s–35.4s)15% 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.