Best Lunary Alternatives in 2026
Updated
20 apps from AI agent observability tools ranked against Lunary on the same published basis.
- 1Lunary vs Opik
- 2Lunary vs Langfuse
- 3Lunary vs Arize AX
- 4Lunary vs SigNoz
- 5Lunary vs W&B Weave
- 6Lunary vs Laminar
- 7Lunary vs OpenLIT
- 8Lunary vs Traceloop
- 9Lunary vs Helicone
- 10Lunary vs Respan (formerly Keywords AI)
- 11Lunary vs MLflow Tracing
- 12Lunary vs TraceRoot
- 13Lunary vs Arize Phoenix
- 14Lunary vs LangWatch
- 15Lunary vs Traccia
- 16Lunary vs VoltOps
- 17Lunary vs HoneyHive
- 18Lunary vs LangSmith
- 19Lunary vs Maxim AI
- 20Lunary vs Galileo
Lunary alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Opik | 8.2 | Free plan | $19/mo | API, Linux, self-hosted, Web |
| 2 | Langfuse | 8.1 | Free plan | $29/mo | API, self-hosted, Web |
| 3 | Arize AX | 7.7 | Free plan | $50/mo | API, self-hosted, Web |
| 4 | SigNoz | 7.7 | Free plan | $19/mo | Android, API, iOS, self-hosted, Web |
| 5 | W&B Weave | 7.6 | Free plan | $60/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 6 | Laminar | 7.5 | Free plan | $30/mo | API, self-hosted, Web |
| 7 | OpenLIT | 7.4 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 8 | Traceloop | 7.4 | Free plan | Free | API, self-hosted, Web |
| 9 | Helicone | 7.3 | Free plan | $79/mo | API, self-hosted, Web |
| 10 | Respan (formerly Keywords AI) | 7.2 | Free plan | $16.58/mo | API, self-hosted, Web |
| 11 | MLflow Tracing | 7.0 | Free plan | Free | API, self-hosted, Web |
| 12 | TraceRoot | 6.9 | Free plan | $30/mo | Web |
| 13 | Arize Phoenix | 6.8 | Free plan | Free | API, self-hosted, Web |
| 14 | LangWatch | 6.8 | Free plan | €29/mo | API, Linux, self-hosted, Web |
| 15 | Traccia | 6.8 | Free plan | $99/mo | API, Web |
| 16 | VoltOps | 6.8 | Free plan | $50/mo | API, self-hosted, Web |
| 17 | HoneyHive | 6.7 | No | — | Web |
| 18 | LangSmith | 6.7 | Free plan | $39/mo | API, self-hosted, Web |
| 19 | Maxim AI | 6.6 | Free plan | $29/mo | API, self-hosted, Web |
| 20 | Galileo | 6.5 | Free plan | $100/mo | API, self-hosted, Web |
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Questions about Lunary alternatives
What is the best alternative to Lunary?
Opik, number 1 in AI agent observability tools with a score of 8.2 out of 10. The others here: Langfuse, Arize AX, SigNoz and 16 more.
What is the best free alternative to Lunary?
Opik is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.