Langfuse
Langfuse is the most popular open source LLMOps platform.
$4M Seed ·
Source: startupintros.com
Latest round on record: Series B+, January 2026, amount undisclosed.
All 3 rounds ↓Acquired by CClickHouse on · SiliconANGLE.
Signals
About Langfuse
It helps teams collaboratively develop, monitor, evaluate, and debug AI applications. Langfuse can be self-hosted in minutes and is battle-tested and used in production by thousands of users from YC startups to large companies like Khan Academy or Twilio.
Langfuse | 201 days from website to first raise on record
Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.
Funding rounds
| Date | Round | Amount | Lead | Source |
|---|---|---|---|---|
| Series B+ | undisclosed | — | fundraisingfox.com | |
| Seed | $4M | — | startupintros.com | |
| Seed | undisclosed | — | fundraisingfox.com |
Timeline
- Acquired by
CClickHouse
Source: SiliconANGLE - X account created
- Website created
Founders and team
MK
Marc Klingen Co-Founder & CEOLinkedIn · source: foundertrace.comMD
Max Deichmann Co-Founder & CTOLinkedIn · source: foundertrace.comCR
Clemens Rawert Co-FounderLinkedIn · source: foundertrace.com
Investors
Companies like Langfuse
OOpenMeter$3M Seed · Mar 2024
GGlassFlowSeed · Oct 2024OOsmantic
MMistral AI$18M Series B+ · Aug 2024
SSeldon$20M Series B+ · Mar 2023HHoneyHive$7.4M Seed · Apr 2025
Sources and API
Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/langfuse-2 (get a free API key).