20 AI agent observability tools worth knowing in 2026, from Langfuse to OpenLIT
MaryamMiradi · x · 2026-10-10
A curated guide to agent observability for regulated workflows (medical, finance, legal, security), where common pain points include unknown failure causes, unexplained retries, cost spikes, and unreconstructable decision paths. The list covers 20 tools: tracing options like Langfuse (traces+sessions+evals), Arize Phoenix (tracing+debugging+RAG visibility), Opik (agent traces+production monitoring), AgentOps (session replay+tool calls+costs), plus OpenTelemetry-native instrumentation like OpenLIT.
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