Langfuse — LLM observability (Open Source)

Langfuse is an open-source LLM observability solution from Langfuse. Review its features and licensing on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Langfuse?

Langfuse is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under LLM observability and published by Langfuse. Buyers typically evaluate Langfuse when they need a dependable LLM observability option and want to weigh the trade-offs between free, open-source and paid tools before committing.

• Category: LLM observability
• Brand: Langfuse
• License: Open Source

Frequently asked questions

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