Best LLM observability / LLMOps platform

Combined ranking

1. 1
   Langfuse—13 pts

   GPT #2Claude #2Gemini #1

   Comprehensive, MIT-licensed open-source platform that is framework and model agnostic, easily self-hostable without enterprise feature gates, and integrates prompt management, tracing, and evaluations natively.

   To stay #1 Standardizing more opinionated, out-of-the-box evaluation templates and presets to reduce the manual configuration overhead for custom scorers.

2. 2
   LangSmith—13 pts

   GPT #1Claude #1Gemini #3

   Best end-to-end LLM app workflow: mature tracing, LangChain/LangGraph-native debugging, evals, datasets, prompt iteration, production monitoring, strong integrations, and fast root-cause analysis for agentic systems

   To rank higher Make non-LangChain stacks feel equally first-class instead of merely well-supported

3. 3
   Arize Phoenix▲18 pts

   GPT #3Claude #3Gemini #4

   Strongest observability-plus-evaluation bridge for teams that care about OpenTelemetry, OpenInference, RAG diagnostics, experiments, prompt iteration, human labels, and moving from notebooks to production evidence

   To rank higher Simplify the product story and onboarding so it feels less fragmented across Phoenix, Arize, and OpenInference

4. 4
   Braintrust▼18 pts

   GPT #4Claude #4Gemini #2

   Best-in-class eval-first workflow and experimentation loop, featuring highly flexible scoring, CI/CD evaluation gates, and seamless replay of production traces to iterate on prompts and models with real data.

   To rank higher Improving native visualization and out-of-the-box tracing capabilities for highly complex, multi-turn agentic workflows.

5. 5
   Datadog LLM Observabilityincumbent—2 pts

   GPT #5Claude #5Gemini —

   Best enterprise full-stack option: correlates LLM spans with APM, infrastructure, logs, RUM, alerts, security controls, cost, quality, latency, and production incidents in the same system SRE teams already use

   To rank higher Become more AI-native in developer workflow depth, prompt iteration, and eval ergonomics

6. 6
   Portkey—1 pts

   GPT —Claude —Gemini #5

   Combines robust AI gateway routing with automatic, proxy-level, zero-code tracing and cost monitoring across hundreds of models.

   To rank higher Enhancing the qualitative evaluation and offline experimentation loop to match SDK-first evaluation tools.

Rank history

By model

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously