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Best Fiddler AI Alternatives in 2026

12 tools from AI agent observability tools ranked against Fiddler AI on the same published basis.

  1. 1
    W&B Weave Free plan apiLinuxMacself-hostedWeb $60/mo7.8
    Fiddler AI vs W&B Weave
  2. 2
    PetalTrace Free plan apiLinuxMacself-hostedWeb Free7.6
    Fiddler AI vs PetalTrace
  3. 3
    SigNoz Free plan AndroidapiiOSself-hostedWeb $19/mo7.6
    Fiddler AI vs SigNoz
  4. 4
    Opik Free plan apiLinuxself-hostedWeb $19/mo7.5
    Fiddler AI vs Opik
  5. 5
    OpenLIT Free plan apiLinuxMacself-hostedWeb Free7.4
    Fiddler AI vs OpenLIT
  6. 6
    Traccia Free plan apiWeb $99/mo7.4
    Fiddler AI vs Traccia
  7. 7
    VoltOps Free plan apiself-hostedWeb $50/mo7.3
    Fiddler AI vs VoltOps
  8. 8
    Helicone Free plan apiself-hostedWeb $79/mo7.2
    Fiddler AI vs Helicone
  9. 9
    Maxim AI Free plan apiself-hostedWeb $29/mo7.2
    Fiddler AI vs Maxim AI
  10. 10
    Respan (formerly Keywords AI) Free plan apiself-hostedWeb $16.58/mo7.2
    Fiddler AI vs Respan (formerly Keywords AI)
  11. 11
    Observe Free trial apiLinuxMacWebWin 7.1
    Fiddler AI vs Observe
  12. 12
    Agenta Free plan apiself-hostedWeb $29/mo7.0
    Fiddler AI vs Agenta
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