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Open LLM observability (Phoenix)

OSS traces, embeddings visualization, and eval datasets as a Langfuse peer or complement.

TrialObservabilityNew
Why this ring
Trial when you want open tooling and embedding debugging beyond basic request logs.
Production risk if ignored
Two observability tools without ownership - neither becomes the source of truth.
Typical effort
weeks
Low FinOps impact

Use cases

  • Embedding drift views
  • Trace debugging
  • Offline eval notebooks

Adoption steps

  1. Instrument one app
  2. Compare vs Langfuse
  3. Pick primary store
  4. Export for compliance

Related tools

In your assessment

Observability tool consolidation + coverage