langfuse
Open-source LLM engineering platform with traces, evals, prompt management, and datasets for debugging and improving LLM applications.
- Score
- 99.6773 signals
- Evidence
- 34,067 stars · 3,678 forks · 10 mentions
- Last commit
- as last read from GitHub; most reads are from 2 Sep 2026 or later
- Listed
Install
No one-command install. Set it up from its source.
Alternatives · Observability
- comet-opik22,249 stars · 1,827 forks · 1 mention99.490
- langsmith1,043 stars · 288 forks98.005
- honeycomb16 stars · 6 forks75.153
What it is
Open-source LLM engineering platform with traces, evals, prompt management, and datasets for debugging and improving LLM applications.
When to use it
Use Langfuse when you need LLM/agent observability, tracing, or monitoring in your pipeline.
How to install / invoke
See the source repo or docs at https://github.com/langfuse/langfuse.
Notes
Discovered via the observability-tools curated list.