Llm Observability

An independent, evidence-based ranking of 12 llm observability, scored on public signals with full provenance, never on user reviews or paid placement.

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Top signal weightsDevelopment activity 0.14Developer Q&A activity 0.14Security posture 0.12Capabilities 0.12

Rank by intent

Balanced Most adopted Most actively maintained Most secure Best value

Ranking basisMost actively maintainedDevelopment activity 0.23Developer Q&A activity 0.12Security posture 0.10Release cadence 0.10

Same facts, re-weighted. Only the weighting changes, never the underlying evidence.

Llm Observability ranked by vioscaleAI composite score
#	Software	Score	Confidence
1	LangfuseOpen-source platform for analyzing, testing, and enhancing AI agent performance in production	69	medium · 71%
2	Arize PhoenixOpen-source platform for monitoring and evaluating language model applications in production	57	medium · 57%
3	PortkeyUnified command center for operating AI systems reliably in production	78	medium · 74%
4	LunaryMonitor and analyze AI application performance with real-time insights and enterprise control	70	medium · 70%
5	TraceloopAn open-source Rust-based LLM gateway providing unified multi-provider access with built-in observability	63	medium · 72%
6	BraintrustA unified platform for monitoring and iteratively improving AI agents in production	58	low · 40%
7	OpikAn open-source platform for monitoring and evaluating AI applications and agent workflows	55	low · 31%
8	HumanloopA platform for evaluating and managing language model applications in production	55	medium · 51%
9	LangSmithA platform for building and managing AI agents with observability and evaluation capabilities	52	low · 10%
10	Weights & Biases WeaveMonitoring and tracing for AI agents in production environments	52	low · 25%
11	AgentOpsMonitoring and observability platform for AI agents with cost tracking and performance debugging	49	medium · 52%
12	HeliconePython client library that captures OpenAI API calls and forwards them to Helicone	40	low · 34%
No tools on this page match that name.

Ranked by the vioscaleAI composite: independent signals, not user reviews. See the method.

Llm Observability compared

Head-to-head on the attributes that matter here, with a source and date on every value.

Llm Observability: common questions

How does vioscaleAI rank Llm Observability?

vioscaleAI ranks llm observability on a confidence-weighted blend of independent signals, weighted most on development activity, developer q&a activity, security posture. Scores come from public evidence such as adoption, activity and security posture, never from user reviews or paid placement.

What is the highest-scored tool in Llm Observability?

Langfuse currently leads with a vioscaleAI composite score of 69/100. The full ranking, with the evidence behind every score, is on this page.

How many tools does vioscaleAI list in Llm Observability?

vioscaleAI currently lists 12 in Llm Observability, each with a dated, sourced profile.

Can a vendor pay to rank higher in Llm Observability?

No. Vendors can claim and correct their profile, but placement can never be bought. That independence is what makes the ranking trustworthy for buyers and AI.