Open Source · Observability
Langfuse
by Langfuse
Open-source LLM observability. Traces, evals, prompt management, all self-hostable.
Our verdict
We have not reviewed Langfuse yet
No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.
From the listing
About Langfuse
Langfuse is the most popular open-source observability platform for LLM apps. Traces, evals, prompt management, datasets, and cost tracking all in one place. Self-hostable for compliance-sensitive teams, hosted SaaS for everyone else. Pairs with most major frameworks via official integrations.
Best for
Teams running LLM apps in production who need real observability
Use cases
- Trace and debug every LLM call across a production app
- Manage prompts as versioned, deployable artefacts
- Run evals against real production data
- Track cost and latency per workflow
Notes
Why it matters
You cannot fix what you cannot see. Langfuse is the cleanest open-source answer for seeing what your LLM app is actually doing in production.
How teams use it in production
Wire Langfuse on day one, not after the first incident. Set cost alerts. Add evals as soon as the first user-facing flow stabilises.
What to watch
The split between Langfuse, Helicone, Arize, and LangSmith is the live race in LLM observability. Self-hosting capability is the obvious differentiator.
Pros
- Open source and self-hostable, no lock-in
- Strong integrations with most major frameworks
- Prompt management is a separately useful surface
- Active development and large community
Cons
- Self-hosting adds infra scope
- Some advanced eval features still hosted-only
- UI density can intimidate first-time users
Key facts
What we have checked
- Latest version
- 4.78.0
- Days since the last commit
- 0
- GitHub forks
- 4,166
- GitHub stars
- 37,100
- Days to a first reply on issues
- 0.4
- Open issues
- 326
- Releases in the last 90 days
- 92
Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.
Stars and usage
How Langfuse is growing
35,059 to 37,100
Health and security
Is Langfuse looked after, and what do its setup files show
Health score
100 out of 100
| Part | Points | What we saw |
|---|---|---|
| Recent activity | 30 of 30 | Last push 0 days ago |
| Releases | 15 of 15 | 92 releases in 90 days |
| Issue replies | 20 of 20 | First reply in 0.4 days (median) |
| Maintainer | 15 of 15 | Owned by an organisation |
| Official source | Not counted | MCP servers only |
Sources
Where this comes from
A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.
Changelog
What changed
Released 4.78.0
Released 3.227.1
Released 4.77.0
Released 4.76.0
Released 4.75.0
Released 3.227.0
Released 4.74.0
Released 3.226.0
Released 4.73.0
Released 4.72.0
Released 4.71.0
Released 3.225.15
Released 3.225.14
Released 4.70.1
Released 4.70.0
Released 4.69.0
Released 4.68.0
Released 4.67.0
Released 4.66.0
Released 4.65.0
Pairs with
Other entries in the index that connect to this one. Click through to see the chain.
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