Founder of a listed tool
Effy Zhang
Former founder and CEO (May 2023–September 2024); now Anthropic MTS, named behind the Baserun listing on Anchor Terminal.
What Effy builds
Baserun F · Agent observability & evals
Discontinued LLM testing and monitoring platform with Python and JavaScript SDKs for tracing model calls.
Former founder and CEO (May 2023–September 2024); now Anthropic MTS, researched 27 October 2026 · the people behind it
Works with
- Adam Ginzberg Former co-founder (May–November 2023); now engineer at Subframe
Questions
Who is Effy Zhang?
Effy Zhang founded Baserun, a testing and observability platform for LLM applications, in Y Combinator's Summer 2023 batch. Before Baserun, Zhang worked at Cruise and Square.
What does Baserun make?
Anchor Terminal lists Baserun from Baserun. Discontinued LLM testing and monitoring platform with Python and JavaScript SDKs for tracing model calls.
How are Effy's tools graded?
Baserun is graded F, 7.3 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.
Sources (9)
- https://www.linkedin.com/in/effyz/details/experience/
- https://www.ycombinator.com/companies/baserun
- https://www.linkedin.com/in/effyz
- https://x.com/effyyzhang
- https://www.linkedin.com/in/adam-ginzberg-77b6ba126/details/experience/
- https://www.linkedin.com/in/adam-ginzberg-77b6ba126
- https://x.com/baserunai
- https://github.com/baserun-ai/baserun-py
- https://github.com/baserun-ai
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