Boundary
YC W23Seattle, US · Founded 2023 · 10 employees · Hiring · 2 known investors
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Boundary develops BAML, a programming language designed for building AI agents and integrating large language models into applications. The language includes native testing and observability tools for structured LLM outputs, tool calling, and parallel LLM execution, and can be used alongside other programming languages to standardize AI component development.
Also known as Gloo · Gloo Chat
Founders & leadership· Y Combinator alumni (W23)
Boundary was founded in 2023 by Vaibhav Gupta and Aaron Villalpando Gonzalez.


Investors · 2
Competitors · 6
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Frequently asked questions
- What does Boundary do?
- Boundary develops BAML, a programming language designed for building AI agents and integrating large language models into applications. The language includes native testing and observability tools for structured LLM outputs, tool calling, and parallel LLM execution, and can be used alongside other programming languages to standardize AI component development.
- Who founded Boundary?
- Boundary was founded by Vaibhav Gupta, Aaron Villalpando Gonzalez in 2023.
- Who are Boundary's investors?
- Boundary's investors include Y Combinator, Galaxy Ventures.
- Where is Boundary headquartered?
- Boundary is headquartered in Seattle, US.








