James Stratton
A Harvard University economist studying the impact of AI coding tools on enterprise productivity.
Timeline (last 90 days)
A Harvard study tracked 718 companies and 300 million events and found that coding agents increased lines of code by 30%, commits by 20%, and PRs by 23%, but the JIRA issue resolution rate showed no statistically significant improvement.
The Harvard study found that after agents were introduced, review wait times rose 49% and PRs requiring rework doubled; 80% of companies used AI review tools, but three-quarters of comments were still written by humans.
A study covers more than 700 software companies, over 2,000 engineers and about 300 million work events, with data from Jellyfish, covering the period from 2021 to March 2026.
The study was conducted by Fiona Shen and James Stratton of Harvard University.
Harvard researchers Fiona Chen and James Stratton led a study based on Jellyfish data that tracked changes in engineering efficiency over 12 months after enterprises adopted AI coding agents.
Harvard economists Fiona Chen and James Stratton published a working paper using Jellyfish platform data to track the work patterns of 718 companies and more than 700,000 engineers.
All Facts (6)
A Harvard study tracked 718 companies and 300 million events and found that coding agents increased lines of code by 30%, commits by 20%, and PRs by 23%, but the JIRA issue resolution rate showed no statistically significant improvement.
50%UnverifiedThe Harvard study found that after agents were introduced, review wait times rose 49% and PRs requiring rework doubled; 80% of companies used AI review tools, but three-quarters of comments were still written by humans.
50%UnverifiedA study covers more than 700 software companies, over 2,000 engineers and about 300 million work events, with data from Jellyfish, covering the period from 2021 to March 2026.
50%UnverifiedThe study was conducted by Fiona Shen and James Stratton of Harvard University.
50%UnverifiedHarvard researchers Fiona Chen and James Stratton led a study based on Jellyfish data that tracked changes in engineering efficiency over 12 months after enterprises adopted AI coding agents.
50%UnverifiedHarvard economists Fiona Chen and James Stratton published a working paper using Jellyfish platform data to track the work patterns of 718 companies and more than 700,000 engineers.
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