Best LLM Observability Tools in 2026
Updated
26 LLM observability tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
26ranked
1free plans on this page
8 Oct 2026last checked
Input list LLM Observability Tools 1 channels on this page · 5 of 8 spec lines stated by the makers
Ch Tool Free planPaid fromLLM tracingLLM evaluationsPrompt managementAgent tracingRetrieval tracingToken cost tracking Spec sheet Score
26 OpenLLMetry Free planYesPaid fromnot statedLLM tracingYesLLM evaluationsnot statedPrompt managementnot statedAgent tracingYesRetrieval tracingYesToken cost trackingYes 5/8spec lines stated 5.7
More in Developer Tools
All developer tools listsAccessibility Testing Software 168Log Management Software 107AI Coding Assistants 103Package Managers 93AI Agent Platforms 73Reverse Engineering Tools 73Software Composition Analysis Software 66Artifact repository software 63Browser Automation Tools 63Integrated Development Environments 63Code Playground Software 58Container Registries 56