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Grok 4.7 High vs Haiku 5.5 low+guidance

Grok 4.7 High leads on quality: 21.6 points higher; Haiku 5.5 low+guidance leads on cost and agent time: 20.1× cheaper and 1.5× faster.

24 tasksData from

Stet score

Grok 4.7 Highcursor · high reasoningRank 4 of 15

64.095% range 53.2–73.821.6 points higher

Haiku 5.5 low+guidanceclaude-code · low reasoningRank 10 of 15

42.495% range 33.2–51.7

Their 95% score ranges don’t overlap.

Cost / task

Grok 4.7 High$5.76
Haiku 5.5 low+guidance$0.2920.1× cheaper

Agent time / task

Grok 4.7 High18.9 min
Haiku 5.5 low+guidance12.4 min1.5× faster

Quality

Head-to-head matchups

Grok 4.7 High won15

Tied6

Haiku 5.5 low+guidance won3

Grok 4.7 High’s win share 75%, 95% range 61–88%Ties are within judge noise.

Task by task

Grok 4.7 High solved 5 tasks that Haiku 5.5 low+guidance didn’t, and Haiku 5.5 low+guidance solved 1 that Grok 4.7 High didn’t. Both solved 8; neither solved 10.

Grok 4.7 High only 5

  • stet-15439c21Passed tests
  • stet-commit-5d766ddeEquivalent to the merged fix
  • stet-6f84e978Passed tests
  • stet-commit-f8ae1177Passed tests
  • stet-2450ca2dPassed tests

Haiku 5.5 low+guidance only 1

  • stet-43493c52Passed tests

A task counts as solved when its tests passed or a judge found the fix equivalent to the merged change, as in the leaderboard’s Solved column. Stet score also weighs code quality, so it can order the two differently.

All 24 compared tasks
Task by task
TaskGrok 4.7 HighHaiku 5.5 low+guidanceSolved by
stet-3169aefaPassed testsPassed testsBoth
stet-89dfbc27Passed testsPassed testsBoth
stet-b28f4fe7Passed testsPassed testsBoth
stet-232b50baPassed testsPassed testsBoth
stet-5276aa3fPassed testsPassed testsBoth
stet-commit-bbbbae09Passed testsPassed testsBoth
stet-66762b4cPassed testsPassed testsBoth
stet-15439c21Passed testsFailedGrok 4.7 High only
stet-commit-f0caded9Equivalent to the merged fixEquivalent to the merged fixBoth
stet-commit-5d766ddeEquivalent to the merged fixFailedGrok 4.7 High only
stet-43493c52FailedPassed testsHaiku 5.5 low+guidance only
stet-6f84e978Passed testsFailedGrok 4.7 High only
stet-commit-f8ae1177Passed testsFailedGrok 4.7 High only
stet-2450ca2dPassed testsFailedGrok 4.7 High only
stet-commit-342d0ac0FailedFailedNeither
stet-commit-60a0e6c2FailedFailedNeither
stet-commit-5e075641FailedFailedNeither
stet-commit-2826765eFailedFailedNeither
stet-commit-a8716b88FailedFailedNeither
stet-commit-30506f8eFailedFailedNeither
stet-commit-87814583FailedFailedNeither
stet-commit-d2ab0c25FailedFailedNeither
stet-commit-e41c2e2dFailedFailedNeither
stet-commit-e928166fFailedFailedNeither

Side by side

Side by side
MetricGrok 4.7 HighHaiku 5.5 low+guidance
Harnesscursorclaude-code
Reasoning efforthighlow
Rank4 of 1510 of 15
Stet score64.095% range 53.2–73.842.495% range 33.2–51.7
Solved13/2411 passed, 2 judged equivalent9/248 passed, 1 judged equivalent
Cost / task$5.76$0.29
Agent time / task18.9 min12.4 min

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About this data

  • 24 tasks, each a merged change replayed from the repo as it was just before the merge.
  • Data from .
  • Both setups come from the same leaderboard run of 15 setups: bmk_d4ba310fdf50db4ccb2092e3.

See all 15 setups on the leaderboardHow Stet measures