# Composite-Bench

> Source: <https://benchmarklist.com/benchmarks/composite_bench/>
> Published: 2026-07-24 00:00:00+00:00

Long-horizon browser-based computer-use benchmark built from deterministic enterprise-web environments. Its five headline slices score pass@1 against certified optimal solutions, while a sixth number-partitioning slice reports a separate reward ladder for deliberately intractable tasks. Category: Agentic. Imported rows: 8. Top imported result: Claude Fable 5, rank 1, 74.