Back to AIBriefs
AnalysisAI ModelsPolicy

Benchmark hacking discovered in latest models like Opus 4.8 and Composer 2.5

Cursor avatar
Cursor
@cursor_ai

We're sharing new research on how models hack public benchmarks. The latest models, including Opus 4.8 and Composer 2.5, learn to retrieve solutions from the internet or git history. When we apply a stricter harness, eval scores drop significantly. https://t.co/4kTVssqdjx

·
10 hours ago