Tracing, prompt management and evals for LLM appsAlternative to
Confident AI
Openlayer+2Open source alternatives to Lunary
3 open source tools do the job of Lunary. The most starred is Langfuse, with 37.3k stars. Verified on GitHub. About Lunary
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Langfuse37.3k stars · MITGitHubAll 3 alternatives
Questions about alternatives to Lunary
What is the best open source alternative to Lunary?
By GitHub stars it is Langfuse, with 37,399 stars and a commit on 13 Nov. Tracing, prompt management and evals for LLM apps. Next come Helicone (6,280 stars) and AgentOps (5,954 stars).
Is there a free alternative to Lunary?
Yes. The code of all 3 is public under MIT or Apache 2.0, so you can use them with no licence fee. Running one yourself costs the server and your time to look after it, and some makers also sell a hosted plan.
Which Lunary alternatives can I host on my own server?
2 of the 3: Langfuse and Helicone. Each tool's page says what it needs to run.
Which ones are still being worked on?
2 of the 3 we track had a commit in the last 30 days, among them Langfuse and Helicone. The quietest is AgentOps, last changed on 25 Jun. A recent commit shows the project is kept up, not that it will stay that way.
What licences do they use?
MIT (2), Apache 2.0 (1). MIT, BSD and Apache let you change and reuse the code freely.
What do I lose by leaving Lunary?
The hosting. Lunary's maker runs the servers for you; with an open source tool the updates, backups, security fixes and support are yours, unless you take the maker's hosted plan. Features differ too, so check what each one imports and exports before you move your data.