# FrontierCS 2: A Benchmark for Computer Science R&D Released

- Source: HuggingFace Daily Papers
- Published: 2026-10-21T00:00:00.000Z
- RoboHot: https://robohot.news/en/items/v4kcs6cntk1aq5vfzhne4zfjs
- Original: https://huggingface.co/papers/2610.29932

## Summary

Researchers introduce FrontierCS 2, a benchmark of 48 open-ended tasks. Their approach takes a paper and the code its authors released, deletes the paper's contribution, and uses the remaining code as the human reference baseline. Unlike earlier benchmarks that only give a problem description and grade one program after the run, FrontierCS 2 places agents inside a research environment where they inherit a runnable repository and can submit patches at any time. The evaluator returns only a development-suite score, while the evaluator, the held-out final suite, and the reference remain private.