ClickHouse acquired Langfuse; the team and product roadmap continued under ClickHouse, with no immediate changes promised to users.
SourcePublic company, workplace, funding, and market signals
Updated Jul 29, 2026
Langfuse is an open-source AI engineering platform for LLM observability, evaluations, prompt management, and analytics. It was founded in 2023, later acquired by ClickHouse in January 2026, and continues to support cloud, self-hosted, and enterprise deployments.
Primary product
Open-source AI engineering platform for LLM observability, evaluations, prompt management, and analytics
Founded
2023
Headquarters
Berlin, Germany; San Francisco, CA
Team size
16+ full-time employees
Work style
Flexible
Industry
Computer Software
Sub-industry
AI engineering / LLM observability
Offices
8 jobs at Langfuse
Business model
Stage
Seed (acquired by ClickHouse in Jan 2026)
Total raised
$4M
Latest round
Seed · Nov 2023
Latest amount
$4M
Nov 2023 · Lightspeed Venture Partners
Leadership
Co-Founder & CEO
Co-Founder & CTO
Co-Founder & COO
Founding Engineer
Founding Engineer
Growth Engineer
Enterprise & Partnerships
Product Engineer
Product Marketing Engineer
Product Marketing Engineer
Product Engineer
Product Engineer
Product Engineer
Support Engineer
Integrations Engineer
Open-source, transparent, engineering-led, and small/talent-dense. Europe-based roles are remote-first with monthly Berlin collaboration, and the company emphasizes freedom, responsibility, and shipping useful product quickly.
Work style
Flexible
Compensation
Public handbook says Langfuse pays above-market salaries plus significant equity, regularly reviews compensation, and aims for candidate-friendly employment and equity contracts.
Benefits
Pricing
Freemium and usage-based cloud subscriptions with graduated unit overages; enterprise contracts for larger deployments and self-hosted commercial modules.
Differentiators
Technology
Customers
Competitors
Estimated revenue
Third-party estimates vary from roughly $0.1M-$1.1M ARR; no official revenue disclosure found.
Estimated monthly visits
957.5K
Traffic estimate as of Jul 2026
ClickHouse acquired Langfuse; the team and product roadmap continued under ClickHouse, with no immediate changes promised to users.
SourceLangfuse blog · Apr 2026
Langfuse shipped a Japan Cloud region, new experiments, an updated website, Langfuse Academy beta, and an LLM-as-a-Judge API.
Langfuse blog · Jan 2026
Langfuse highlighted the ClickHouse acquisition, Claude Code integration, corrected outputs, and the start of Langfuse v4 beta.
Reuters · Jan 2026
Reuters reported ClickHouse’s $15B valuation round and its acquisition of Langfuse, describing Langfuse as an open-source LLM observability platform.
Langfuse blog · Jan 2026
Langfuse announced the acquisition, said the team would remain intact, and emphasized that open source, self-hosting, and the product roadmap would continue unchanged.
ClickHouse blog · Jan 2026
ClickHouse described Langfuse as already built on ClickHouse and said it would continue investing in the platform and community.