Best Lunary Alternatives in 2026
Updated
20 platforms from AI agent observability tools ranked against Lunary on the same published basis.
- 1Lunary vs PetalTrace
- 2Lunary vs Traccia
- 3Lunary vs Agenta
- 4Lunary vs Arize AX
- 5Lunary vs Braintrust
- 6Lunary vs Fiddler AI
- 7Lunary vs Galileo
- 8Lunary vs Helicone
- 9Lunary vs Laminar
- 10Lunary vs Langfuse
- 11Lunary vs LangSmith
- 12Lunary vs LangWatch
- 13Lunary vs LogicGaze
- 14Lunary vs Maxim AI
- 15Lunary vs MLflow Tracing
- 16Lunary vs OpenLIT
- 17Lunary vs Opik
- 18Lunary vs Respan (formerly Keywords AI)
- 19Lunary vs SigNoz
- 20Lunary vs Traceloop
Lunary alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | PetalTrace | 7.4 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | Traccia | 7.4 | Free plan | $99/mo | API, Web |
| 3 | Agenta | 7.3 | Free plan | $29/mo | API, self-hosted, Web |
| 4 | Arize AX | 7.3 | Free plan | $50/mo | API, self-hosted, Web |
| 5 | Braintrust | 7.3 | Free plan | $249/mo | API, self-hosted, Web |
| 6 | Fiddler AI | 7.3 | Free plan | Free | API, self-hosted, Web |
| 7 | Galileo | 7.3 | Free plan | $100/mo | API, self-hosted, Web |
| 8 | Helicone | 7.3 | Free plan | $79/mo | API, self-hosted, Web |
| 9 | Laminar | 7.3 | Free plan | $30/mo | API, self-hosted, Web |
| 10 | Langfuse | 7.3 | Free plan | $29/mo | API, self-hosted, Web |
| 11 | LangSmith | 7.3 | Free plan | $39/mo | API, self-hosted, Web |
| 12 | LangWatch | 7.3 | Free plan | €29/mo | API, Linux, self-hosted, Web |
| 13 | LogicGaze | 7.3 | Free plan | Free | API, self-hosted, Web |
| 14 | Maxim AI | 7.3 | Free plan | $29/mo | API, self-hosted, Web |
| 15 | MLflow Tracing | 7.3 | Free plan | Free | API, self-hosted, Web |
| 16 | OpenLIT | 7.3 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 17 | Opik | 7.3 | Free plan | $19/mo | API, Linux, self-hosted, Web |
| 18 | Respan (formerly Keywords AI) | 7.3 | Free plan | $16.58/mo | API, self-hosted, Web |
| 19 | SigNoz | 7.3 | Free plan | $19/mo | Android, API, iOS, self-hosted, Web |
| 20 | Traceloop | 7.3 | Free plan | Free | API, self-hosted, Web |
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Questions about Lunary alternatives
What is the best alternative to Lunary?
PetalTrace, number 1 in AI agent observability tools with a score of 7.4 out of 10. The others here: Traccia, Agenta, Arize AX and 16 more.
What is the best free alternative to Lunary?
PetalTrace is the best-ranked alternative with a free plan. 20 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.