Langfuse
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
3recommend
0warn against
Jan 29, 2026first mention
Oct 28, 2026latest mention
Why people recommend it
“Langfuse tracing on every token and dollar.”
AI engineer building RAG chatbotson “Ask HN: Who wants to be hired? (August 2026)”
“Langfuse ended up being the observability tool I went with instead over the one I built”
built their own similar toolswitched from TensorZeroon “AI OSS tool repo goes archived over night after rais…”
Show 1 more
“I'm quite happy with this.”
Caveats and dissent
No one in these comments warned against it.
Often compared with
Who recommends it in their own words
From the makers not counted in the ranking
“Langfuse is the open-source LLM engineering platform — tracing/observability, evals, and prompt management”
CTO and co-founderon “Ask HN: Who is hiring? (August 2026)”
Threads where it came up
- Ask HN: Has anyone used Phoenix, Langfuse, or OpenObserve? 1 mention
- Ask HN: Who wants to be hired? (August 2026) 1 mention
- Ask HN: Who is hiring? (August 2026) 1 mention
- AI OSS tool repo goes archived over night after raising $7.3M Seed 1 mention
- Ask HN: Who wants to be hired? (June 2026) 1 mention
- Vulnerabilities in 45 Open Source Projects (vLLM, Langfuse, Phase, NocoDB) 1 mention
Data: langfuse.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 6
“I used both Langfuse and Logfire. Imo both very similar”
“Langfuse tracing on every token and dollar.”
“Langfuse ended up being the observability tool I went with instead over the one I built”
“I stood up their first LLM observability stack, Langfuse on AWS EKS”
“Using LangFuse as an example, since that is one of the tools I'm considering”
“I'm quite happy with this.”