Alternatives

Alternatives to Langfuse

7 LLM Evals & Observability rivals, ranked by the same evidence-graded leaderboard — Langfuse itself ranks #5 with a PA Score of 34/100. Every “beats Langfuse on” below comes from a judged head-to-head round with cited evidence — see the methodology.

#1
Braintrust
Braintrust Data, Inc.
PA Score 38/100vs Langfuse →
coverage
43.8/100
Beats Langfuse on: Delegate tasks to a built-in AI assistant inside the product · Have an agent query my traces, metrics, and eval results through an API or MCP server to debug my app
#2
Cekura
Cekura
PA Score 36/100vs Langfuse →
coverage
31.7/100
Beats Langfuse on: Download a machine-readable API spec (OpenAPI or equivalent) · Drive the product through a documented public API
#3
W&B Weave
Weights & Biases (CoreWeave)
PA Score 35/100vs Langfuse →
coverage
41.8/100
Beats Langfuse on: Download a machine-readable API spec (OpenAPI or equivalent) · Drive the product through a documented public API
#4
Helicone
Helicone, Inc.
PA Score 34/100vs Langfuse →
coverage
32.4/100
Beats Langfuse on: Download a machine-readable API spec (OpenAPI or equivalent) · Drive the product through a documented public API
#6
Arize Phoenix
Arize AI, Inc.
PA Score 32/100vs Langfuse →
coverage
43.5/100
Beats Langfuse on: Have an agent query my traces, metrics, and eval results through an API or MCP server to debug my app · Drive the product through a documented public API
#7
LangSmith
LangChain, Inc.
PA Score 23/100vs Langfuse →
coverage
38.6/100
Beats Langfuse on: Set alerts on error rates, cost spikes, or eval-score drops and get notified in Slack, PagerDuty, or email · Have an agent create a dataset, trigger an eval run programmatically, and read back the results
#8
Galileo
Galileo
PA Score 19/100vs Langfuse →
coverage
24.8/100
Beats Langfuse on: Have an agent create a dataset, trigger an eval run programmatically, and read back the results · Connect an agent via an official MCP server

Full leaderboard: LLM Evals & Observability arena →