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$Φ$-Bench: Can Large Language Models Engineer the Infrastructure That Powers Them?

Research Efficiency & Systems

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TL;DR - Φ-Bench evaluates whether LLMs can engineer and optimize the infrastructure that powers language models, moving beyond isolated coding tasks to realistic, long-horizon systems work. It highlights remaining barriers to autonomous AI infrastructure optimization.

  • Tasks are derived from frontier optimization problems and grounded in real-world code repositories.
  • Coverage ranges from kernel-level function completion to extended implementation and end-to-end system optimization.
  • The benchmark spans multiple layers of the LLM infrastructure stack and varying levels of complexity.
  • Experiments with frontier LLMs characterize current capabilities and limitations, though the abstract provides no specific performance results.

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$Φ$-Bench: Can Large Language Models Engineer the Infrastructure That Powers Them?

arXiv cs.CL Leilei Ding, Shumin Wang, Yuting Huang, Fanqi Wan, Yinmin Zhang, Qi Han, Yiming Xu, Feiyuan Zhang, Xiaomeng Chu, Guoliang You, Wuyang Zhang, Daxin Jiang, Yanyong Zhang 2026-09-09 arXiv:2609.10226
Public signals Hugging Face upvotes 18
Providers: Hugging Face · Upvotes 18 OpenAlex · N/A Publisher · N/A Semantic Scholar · N/A X · N/A Fetched 2026-09-25 14:21:38.911460 UTC

TL;DR - Φ-Bench evaluates whether LLMs can engineer and optimize the infrastructure that powers language models, moving beyond isolated coding tasks to realistic, long-horizon systems work. It highlights remaining barriers to autonomous AI infrastructure optimization.

  • Tasks are derived from frontier optimization problems and grounded in real-world code repositories.
  • Coverage ranges from kernel-level function completion to extended implementation and end-to-end system optimization.
  • The benchmark spans multiple layers of the LLM infrastructure stack and varying levels of complexity.
  • Experiments with frontier LLMs characterize current capabilities and limitations, though the abstract provides no specific performance results.
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