John Yang
Stanford PhD student; creator of SWE-bench and SWE-agent and senior author of the SWE-sweep benchmark
- Computer Science PhD student, Stanford University1
John Yang is a computer science PhD student at Stanford University, advised by Ludwig Schmidt and Diyi Yang, researching language model agents, evaluation, synthetic data and software engineering. Yang's site describes Yang as the creator of InterCode, SWE-bench, SWE-agent, SWE-smith and CodeClash, and also features ProgramBench. Yang is the last-listed author of SWE-sweep, a bug-finding and repair benchmark released by Meta, whose project page lists Meta Superintelligence Labs among Yang's affiliations.123
Research
Yang completed an M.S.E. in computer science at Princeton University, advised by Karthik Narasimhan, and is now a PhD student at Stanford University advised by Ludwig Schmidt and Diyi Yang. Yang's research covers language model agents, language model evaluation, synthetic data and software engineering.1
Yang co-authored SWE-bench (October 2023), which tests whether language models can resolve real GitHub issues, and was first author of SWE-agent (May 2024) and SWE-smith (April 2025). Yang's site also lists InterCode and CodeClash among the projects Yang created and features ProgramBench.4561
SWE-sweep
Work
SWE-sweepOpen-source code
Last-listed author of SWE-sweep, a benchmark in which agents must discover and repair bugs in real repositories without hints about bug type or location.23
SWE-bench (external site: arxiv.org)Open data
Co-author of "SWE-bench: Can Language Models Resolve Real-World GitHub Issues?" (2023); Yang's site lists Yang as the creator of SWE-bench and its Verified, Multimodal and Multilingual variants.41
SWE-agent and SWE-smith (external site: arxiv.org)Open-source code
First author of SWE-agent (2024), on agent-computer interfaces for software engineering, and SWE-smith (2025), on scaling training data for software engineering agents.56
Career timeline
Oct 2023
Co-authored SWE-bench, a benchmark of real-world GitHub issues for language models.4
May 2024
Posted SWE-agent, on agent-computer interfaces for software engineering, as first author.5
Apr 2025
Posted SWE-smith, on scaling data for software engineering agents, as first author.6
2026
Co-authored SWE-sweep, a bug discovery and repair benchmark released by Meta, as last author.3
Other documented roles
Roles the sources document but that are not confirmed as current.
- M.S.E. in Computer Science, advised by Karthik Narasimhan, Princeton University1
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