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Best Respan (formerly Keywords AI) Alternatives in 2026

12 apps from AI agent observability tools ranked against Respan (formerly Keywords AI) on the same published basis.

  1. 1
    Opik Free plan apiLinuxself-hostedWeb $19/mo8.2
    Respan (formerly Keywords AI) vs Opik
  2. 2
    Langfuse Free plan apiself-hostedWeb $29/mo8.1
    Respan (formerly Keywords AI) vs Langfuse
  3. 3
    Arize AX Free plan apiself-hostedWeb $50/mo7.7
    Respan (formerly Keywords AI) vs Arize AX
  4. 4
    SigNoz Free plan AndroidapiiOSself-hostedWeb $19/mo7.7
    Respan (formerly Keywords AI) vs SigNoz
  5. 5
    W&B Weave Free plan apiLinuxMacself-hostedWeb $60/mo7.6
    Respan (formerly Keywords AI) vs W&B Weave
  6. 6
    Laminar Free plan apiself-hostedWeb $30/mo7.5
    Respan (formerly Keywords AI) vs Laminar
  7. 7
    OpenLIT Free plan apiLinuxMacself-hostedWeb Free7.4
    Respan (formerly Keywords AI) vs OpenLIT
  8. 8
    Traceloop Free plan apiself-hostedWeb Free7.4
    Respan (formerly Keywords AI) vs Traceloop
  9. 9
    Helicone Free plan apiself-hostedWeb $79/mo7.3
    Respan (formerly Keywords AI) vs Helicone
  10. 11
    MLflow Tracing Free plan apiself-hostedWeb Free7.0
    Respan (formerly Keywords AI) vs MLflow Tracing
  11. 12
    TraceRoot Free plan Web $30/mo6.9
    Respan (formerly Keywords AI) vs TraceRoot
  12. 13
    Arize Phoenix Web 6.8
    Respan (formerly Keywords AI) vs Arize Phoenix
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