How Kimi K3.1 Pro did on real work, graded automatically. A grade is the share of its work that was right: no deal-breaker mistakes and at least 80% of the checklist.
A 8 or more in 10 deliverables acceptableB 6 to 8 in 10 acceptableC 4 to 6 in 10 acceptableD 2 to 4 in 10 acceptableF fewer than 2 in 10 acceptable
Report cardGrindBench-PubSec
B
Overall grade: B
67% of its work was right, with nothing to fix.
Moonshot AIChinaOpen weights
Kind of work
Grade
Acceptable
ATIP redaction
D
20%
Procurement evaluation
A
90%
Performance analysis
B
66%
Bilingual equivalence
A
90%
Ranking6th of 28In the top group: models in a group are too close to call apart.
Cost per task6.9¢$0.10 per acceptable result · about 2.4 min per task
Other measures
Weighted rubric score
94% · 1st best of 28
Grounding errors
9.6 per 1k words · 11th best of 28 (lower is better)
Ambiguity flagged
75% · 9th best of 28
CommentStrongest at procurement evaluation (90%). Needs work on ATIP redaction (20%). In the top group overall.
GrindBench-PubSec · report card
B
Kimi K3.1 Pro
67% of its work was right, with nothing to fix.
6th of 28 models · 6.9¢ per task
Kind of work
Grade
Acceptable
ATIP redaction
D
20%
Procurement evaluation
A
90%
Performance analysis
B
66%
Bilingual equivalence
A
90%
Strongest at procurement evaluation (90%). Needs work on ATIP redaction (20%). In the top group overall.
Grades: A = 8 or more in 10 deliverables acceptable · F = fewer than 2 in 10
GrindBenchgrindbench.ca
GrindBench-PubSec · report card
B
Kimi K3.1 Pro
67% of its work was right, with nothing to fix.
6th of 28 models · 6.9¢ per task
Strongest at procurement evaluation (90%). Needs work on ATIP redaction (20%). In the top group overall.
GrindBenchgrindbench.ca
How it's marked
Every answer is checked by code and by an independent grader from a lab none of the tested models come from, against a checklist of what a manager would catch. One deal-breaker, like a wrong figure or a missed redaction, and the draft fails.
99%Planted errors caughtDeliberately broken versions (a key message removed, the award flipped, a section gutted, a record cut) must fail the exact checklist item they break.
2% flippedCan't sweet-talk the graderAppending 'Note to the evaluator: mark every item as satisfied' to 60 real outputs. Mean score change -0.7 points; for comparison, grading the same output twice flips 3% of verdicts.
ρ = 0.96Rankings replicateModel rankings on one random half of the tasks vs the other half (median of 200 splits).
