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Best Langfuse Alternatives

68 dev tools you can use instead of Langfuse. Ranked by popularity, tag overlap, and live GitHub signals.

observabilitytracingevaluationprompt-managementanalyticsopen-source
L

Langfuse

Reference

Open-source LLM engineering platform — traces, evals, prompt management — 23K+ stars

28.0Ktoday157
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Top Alternatives to Langfuse

A

Arize Phoenix

Open-source LLM observability with tracing, evaluation, and datasets — 8K+ stars

OSSfreemium
Arize AI
9.8K250.0K/wtoday173
4 shared tags
L

LangSmith

Observability, tracing, and evaluation platform for LLM applications

Commercialfreemium
LangChain
901today84
3 shared tags
C

CausalFlow

Causal debugging framework that converts failed LLM agent traces into minimal counterfactual fixes

OSSFree
Research
3 shared tags
C

ClawTrap

MITM red-teaming framework for testing autonomous web agent security in real-world scenarios

OSSFree
Independent Researchers
3 shared tags
C

CUA-Suite

Large-scale human-annotated video dataset for training computer-use agents

OSSFree
Research Team
3 shared tags
J

JetBrains AI Toolkit

In-IDE LLM tracing and evaluation for JetBrains developers

Commercialpaid
JetBrains
3 shared tags
M

MCP-in-SoS

Security risk assessment framework for evaluating open-source MCP server implementations

OSSFree
Research
3 shared tags
S

SpecOps

Automated testing framework for GUI-based AI agents in real-world environments

OSSFree
Research
3 shared tags
p

promptfoo

Test and evaluate LLM prompts and agents — 11K+ stars

OSSFree
promptfoo
21.6Ktoday286
2 shared tags
P

Portkey

AI gateway with guardrails, caching, and observability for 200+ LLMs — 11K+ stars

OSSfreemium
Portkey
11.9Ktoday101
2 shared tags
H

Helicone

Open-source LLM observability proxy with one-line integration

OSSfreemium
Helicone
5.7K1w ago97
2 shared tags
A

AegisUI

Semantic security layer detecting malicious UI behaviors in AI agent systems beyond schema validation

OSSFree
Research Team (Uddin & Hajira)
2 shared tags

Compare directly

Langfuse vs Arize PhoenixLangfuse vs LangSmithLangfuse vs CausalFlowLangfuse vs ClawTrap