{"slug":"openllmetry","name":"OpenLLMetry","domain":"traceloop.com","verdict":"As of 2026-07-14, ChatGPT, Claude, Gemini, Grok collectively rank OpenLLMetry #4 of 9 for self-hosted llm observability tool (one of 2 leaderboards it appears on). Source: https://modelsagree.com/product/openllmetry (modelsagree.com, CC BY 4.0).","best_rank":4,"categories":2,"entries":[{"slug":"best-self-hosted-llm-observability","title":"Best self-hosted LLM observability tool","rank":4,"of":9,"score":4,"appearances":2,"modelRanks":{"Claude":5,"Grok":3},"reason":"Lightweight Apache 2.0 OTel-native instrumentation for LLM apps (providers, vector DBs, frameworks); zero-config tracing of prompts, latencies, costs that pipes into existing self-hosted OTel backends (e.g., SigNoz, Tempo); ideal for platform teams extending current observability without new full-stack tool.","reasons":[{"model":"Grok","reason":"Lightweight Apache 2.0 OTel-native instrumentation for LLM apps (providers, vector DBs, frameworks); zero-config tracing of prompts, latencies, costs that pipes into existing self-hosted OTel backends (e.g., SigNoz, Tempo); ideal for platform teams extending current observability without new full-stack tool."},{"model":"Claude","reason":"Traceloop's open-source instrumentation emits standard OTel spans for LLM calls into whatever backend you already self-host (Grafana Tempo, Jaeger, SigNoz), meaning zero new stateful services, existing alerting/retention/access controls apply, and no vendor lock-in — the purest platform-engineering answer"}],"fixes":[{"model":"Claude","fix":"It's instrumentation, not a product — you get spans in a generic trace viewer with no prompt playground, evals, or LLM cost analytics unless you build them yourself"},{"model":"Grok","fix":"Instrumentation-focused SDK more than a standalone UI/dashboard platform; needs backend for full visualization/experience."}],"updated":"2026-07-14","rank_history":{"days":["2026-07-13","2026-07-14"],"ranks":[8,3]},"api":"https://modelsagree.com/api/v1/best/best-self-hosted-llm-observability.json"},{"slug":"best-llm-observability-for-startups","title":"Best LLM observability tool for startups","rank":7,"of":7,"score":2,"appearances":1,"modelRanks":{"Grok":4},"reason":"Vendor-neutral OTel instrumentation (one-line setup in many cases), fully open-source/free with zero SaaS dependency, minimal runtime overhead, pairs well with existing observability backends for startups avoiding new vendors.","reasons":[{"model":"Grok","reason":"Vendor-neutral OTel instrumentation (one-line setup in many cases), fully open-source/free with zero SaaS dependency, minimal runtime overhead, pairs well with existing observability backends for startups avoiding new vendors."}],"fixes":[],"updated":"2026-07-14","rank_history":{"days":["2026-07-13","2026-07-14"],"ranks":[null,4]},"api":"https://modelsagree.com/api/v1/best/best-llm-observability-for-startups.json"}],"page":"https://modelsagree.com/product/openllmetry","check":"https://modelsagree.com/check?q=OpenLLMetry","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}