Audit reveals AI labs rotate benchmarks
AI researcher Xuhui Zhou's audit of 18 frontier model releases shows that labs selectively report and rotate benchmarks to shape performance narratives. The study reveals that 47% of capability benchmarks are unique to a single model release, and only 56% are carried forward to the next report, making comparison highly challenging.
AI benchmark reporting is less about objective performance tracking and more about strategic marketing, resulting in a fractured landscape where labs selectively showcase tests that highlight their model's strengths while quietly retiring less favorable ones.
- –**Selective Reporting:** Since nearly half (47%) of capability benchmarks and almost all safety benchmarks (71/80) are only reported by a single lab for their release, direct cross-lab comparison is practically impossible.
- –**High Turnover Rate:** Benchmark portfolios are highly volatile, with 44% of previously reported benchmarks being dropped in subsequent releases from the same lab, raising concerns about cherry-picking and "benchmaxxing."
- –**Focus Shift:** New benchmark additions indicate a clear trend toward evaluating active capabilities—like coding, agents, and professional tasks—rather than static reasoning or memory benchmarks.
DISCOVERED
3h ago
2026-07-10
PUBLISHED
4h ago
2026-07-10
RELEVANCE
AUTHOR
nlpxuhui

