YC active company list audit

Baserun

Baserun: Observability and evaluation platform for LLM apps. Headquartered in San Francisco, CA, United States. Current operating status: inactive.

Oomira checked this YC company record against source evidence and keeps the current facts, observed dates, and provenance visible before the interactive app loads.

18 facts3 sources3 superseded claims

What changed in the audit

external name

Mochi Labs -> Baserun
2026-06-12 · yc-oss record id 28999: field "former_names" includes "Mochi Labs"

external name

baserun.ai -> Baserun
2026-06-12 · yc-oss record id 28999: field "former_names" includes "baserun.ai"

Operating status

active -> inactive
2026-06-12 · YC directory status field = Active

Summary: Observability and evaluation platform for LLM apps.
Description: LLMs are incredibly powerful, but latency, cost, and unpredictable outputs have made productionizing LLM features challenging. Baserun is a testing and observability platform that...
Website: https://baserun.ai
Headquarters: San Francisco, CA, United States
Operating status: inactive
Industry: B2B
Industry: Engineering, Product and Design

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