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| Description | ||||
| Summary | Langfuse sells an open-source platform for tracing, evaluating, and improving LLM and AI agent applications. | |||
| Description | Langfuse is an open-source AI engineering platform for tracing, monitoring, prompt management, experimentation, and evaluation of LLM and agent applications. It is designed for developers and product teams building production AI systems, with both cloud and self-hosted deployment options. The product is offered as a software platform rather than a consulting-led service. | |||
| Positioning | Open-source AI engineering and observability platform focused on production tracing, evaluations, prompt management, and experimentation, with an emphasis on data portability, OpenTelemetry support, and self-hosting. | |||
| Key facts | ||||
| HQ location | Berlin, Germany | |||
| Founded | 2022 | |||
| Employee range | 11-50 | |||
| Funding stage | Seed | |||
| Company type | Private | |||
| Pricing model | custom quote, freemium, subscription, usage based | |||
| Last updated | Jun 21, 2026 | |||
| Financials | ||||
| Revenue estimate | Unknown / not publicly disclosed | |||
| Valuation estimate | Unknown | |||
| Investments | Founded by Marc Klingen, Max Deichmann, and Clemens Rawert after Y Combinator W23. The company states it was backed by Lightspeed Venture Partners, General Catalyst, and Y Combinator, and later said it joined ClickHouse in January 2026. | |||
| Relationships | ||||
| Target customers | Developers, ML/AI engineers, and product teams building and operating LLM applications and AI agents, especially teams that need observability, evaluation, and prompt workflow tooling at production scale. | |||
| Key competitors | LangSmith, Helicone, Arize AI, Humanloop, WhyLabs | |||
| Known customers | Canva | |||
| Segments & Industries | ||||
| Segments | AI Agents, AI Developer Tools, AI Quality & Observability | |||
| Industries | General Purpose | |||
