Haystack
YC S24New York City, US · Founded 2024 · 2 employees · 4 known investors
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Haystack is a GitHub-integrated system that evaluates AI-generated pull requests by analyzing code context, diffs, agent reasoning, and test results to determine whether changes can be merged, require fixes, or need human review. It helps engineering teams manage high volumes of AI-generated code changes while maintaining quality standards and focusing human review effort on complex decisions.
Also known as Haystack Software Inc. · Haystack Software
Founders & leadership· Y Combinator alumni (S24)
Haystack was founded in 2024 by Jake Yatvitskiy and Akshay Subramaniam.


Investors · 4
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Founder mafia
2 people who came through Haystack went on to found or lead other companies.
Related companies · 8
Companies working in the same space as Haystack.
Legal entities · 1
corporate structureFrequently asked questions
- What does Haystack do?
- Haystack is a GitHub-integrated system that evaluates AI-generated pull requests by analyzing code context, diffs, agent reasoning, and test results to determine whether changes can be merged, require fixes, or need human review. It helps engineering teams manage high volumes of AI-generated code changes while maintaining quality standards and focusing human review effort on complex decisions.
- Who founded Haystack?
- Haystack was founded by Jake Yatvitskiy, Akshay Subramaniam in 2024.
- Who are Haystack's investors?
- Haystack's investors include Y Combinator, AltaIR Capital, Day One Ventures, Vestel Ventures.
- Where is Haystack headquartered?
- Haystack is headquartered in New York City, US.









