# Langfuse funding: rounds and investors

> Langfuse has raised $4.0M across 1 round since 2023. Investors include Y Combinator and Lightspeed Venture Partners. Every round with its source.

Source: https://millionrounds.com/company/langfuse (Millionrounds; every figure on the page links to its filing or article)

Germany · [Seed startup](https://millionrounds.com/companies)

# Who invested in *Langfuse*

One round we have observed, with the 2 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI

Y Combinator: W23

Funding summary Updated 26 Oct 2026

**$4.0M** raised across 1 round since 2023, from 1 source

- **Latest round:** Seed, $4.0M Nov 2023
- **Investors:** 2

See who backed them

## The rounds

- **Nov 2023** Seed **$4.0M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) Source recorded

## Founders and team

From Langfuse's own website: 3 founders, 9 on the team.

**Marc Klingen** Co-Founder & CEO

**Clemens Rawert** Co-Founder & COO

**Max Deichmann** Co-Founder & CTO

- **Annabell Schäfer** Product Marketing Engineer
- **Ben Bachem** Product Engineer
- **Caleb Seeling** Support Engineer
- **Lotte Verheyden** Product Marketing Engineer
- **Lysander Kiesel** Product Engineer
- **Mark Salpeter** Product Engineer
- **Nimar Blume** Product Engineer
- **Tobias Klesel** Product Engineer
- **Tobias Wochinger** Product Engineer

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=langfuse).

## Quick answers about Langfuse

### Who invested in Langfuse?

Langfuse's investors include Y Combinator and Lightspeed Venture Partners.

### How much has Langfuse raised?

Langfuse has raised $4.0M across 1 round since 2023.

### When did Langfuse last raise?

Langfuse's most recent round was a Seed of $4.0M in Nov 2023.

### What was Langfuse's biggest round?

Its most recent round, $4.0M in Nov 2023, is also its largest on record.

### Who backed Langfuse first?

Langfuse's first round on record, in Nov 2023, was backed by Y Combinator and Lightspeed Venture Partners.

### What stage is Langfuse at?

Langfuse's latest named round is a Seed, in Nov 2023.

### Where is Langfuse based?

Langfuse is based in Germany.

## Companies like Langfuse

In the same sector, and raised in the last eighteen months.

[**YGO** $9.0M · Oct 2026](https://millionrounds.com/company/ygo)[**Causa Prima** $30M · Oct 2026](https://millionrounds.com/company/causa-prima)[**Stenon** $41M · Oct 2026](https://millionrounds.com/company/stenon)[**OllyGarden** $5.6M · Oct 2026](https://millionrounds.com/company/ollygarden)[**hexafarms** $9.5M · Oct 2026](https://millionrounds.com/company/hexafarms)[**METYCLE** $165M · Sept 2026](https://millionrounds.com/company/metycle)

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