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Langfuse (YC W23) — Open source LLM engineering platform

Langfuse appears in Y Combinator's company directory in the Winter 2023 batch, listed 2023-01-16. Open source LLM engineering platform.

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Langfuse: Accepted into Y Combinator Winter 2023

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Langfuse

New accelerator entry · 2023-01-16 · the record

Winter 2023
batch
19
people
Early
stage
Germany
region
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In their words

Traces, evals, prompt management and metrics to debug and improve your LLM application. Onboard via https://langfuse.com Langfuse helps you build and improve LLM applications across the entire lifecycle: - Develop: Observability, Langfuse UI & Prompt Management - Monitor: Traces, Analytics, Metrics & Evaluations - Test: Experiments, Releases & Datasets We are hiring: https://langfuse.com/careers Langfuse was acquired by Clickhouse in January of 2026.

What the record says

BatchWinter 2023
Announced2023-01-16
StageEarly
StatusAcquired
Team size19
IndustryB2B
Sub-industryB2B -> Engineering, Product and Design
SectorsDeveloper Tools, Generative AI, Analytics, Open Source, AI
RegionsGermany, Europe, Remote, Partly Remote
BasedBerlin, Berlin, Germany
HiringNo
Sitehttps://langfuse.com
Previously known asFinto, langfuse

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Permanent URL: https://mentionfox.com/funding/yc-langfuse
Last updated 2026-09-26
Primary record: Y Combinator directory entry
Langfuse (YC W23) — Open source LLM engineering platform. MentionFox, 2026-09-26. https://mentionfox.com/funding/yc-langfuse