Best Arthur Alternatives in 2026
Updated
20 apps from model monitoring software ranked against Arthur on the same published basis.
- 1Arthur vs Evidently AI
- 2Arthur vs OpenLIT
- 3Arthur vs W&B Weave
- 4Arthur vs Deepchecks
- 5Arthur vs LangWatch
- 6Arthur vs Memoturn
- 7Arthur vs NannyML
- 8Arthur vs Opik
- 9Arthur vs Arize AX
- 10Arthur vs Arize Phoenix
- 12Arthur vs Braintrust
- 13Arthur vs Fiddler AI
- 14Arthur vs Galileo
- 15Arthur vs Helicone
- 16Arthur vs HoneyHive
- 17Arthur vs Laminar
- 18Arthur vs Langfuse
- 19Arthur vs LangSmith
- 20Arthur vs Maxim AI
- 21Arthur vs Qualdo-MQX
Arthur alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Evidently AI | 6.6 | Free plan | $80/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | OpenLIT | 6.6 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 3 | W&B Weave | 6.6 | Free plan | $60/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 4 | Deepchecks | 6.5 | Free plan | Free | API, Linux, self-hosted, Web |
| 5 | LangWatch | 6.5 | Free plan | €29/mo | API, Linux, self-hosted, Web |
| 6 | Memoturn | 6.5 | Free plan | Free | API, Linux, self-hosted, Web |
| 7 | NannyML | 6.5 | Free plan | $399/mo | API, Linux, self-hosted, Web |
| 8 | Opik | 6.5 | Free plan | $19/mo | API, Linux, self-hosted, Web |
| 9 | Arize AX | 6.4 | Free plan | $50/mo | API, self-hosted, Web |
| 10 | Arize Phoenix | 6.4 | Free plan | Free | API, self-hosted, Web |
| 12 | Braintrust | 6.4 | Free plan | $249/mo | API, self-hosted, Web |
| 13 | Fiddler AI | 6.4 | Free plan | Free | API, self-hosted, Web |
| 14 | Galileo | 6.4 | Free plan | $100/mo | API, self-hosted, Web |
| 15 | Helicone | 6.4 | Free plan | $79/mo | API, self-hosted, Web |
| 16 | HoneyHive | 6.4 | Free plan | Free | API, self-hosted, Web |
| 17 | Laminar | 6.4 | Free plan | $30/mo | API, self-hosted, Web |
| 18 | Langfuse | 6.4 | Free plan | $29/mo | API, self-hosted, Web |
| 19 | LangSmith | 6.4 | Free plan | $39/mo | API, self-hosted, Web |
| 20 | Maxim AI | 6.4 | Free plan | $29/mo | API, self-hosted, Web |
| 21 | Qualdo-MQX | 6.4 | Free plan | $79/mo | API, self-hosted, Web |
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Questions about Arthur alternatives
What is the best alternative to Arthur?
Evidently AI, number 1 in model monitoring software with a score of 6.6 out of 10. The others here: OpenLIT, W&B Weave, Deepchecks and 16 more.
What is the best free alternative to Arthur?
Evidently AI 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 free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.