Best Model Monitoring Software in 2026
Updated
Monitoring software helps you track how models behave after deployment, including changes in data and performance. Compared on drift detection, bias monitoring, data quality monitoring, and performance monitoring, these entries also provide details on deployment options and monitored model limit. Consider free plans and paid-from pricing as part of the operational fit. Evidently AI, OpenLIT, and W&B Weave are among the options shown. The listed criteria can help you focus on the signals you need to monitor and the deployment arrangements that suit your work.
21 of 21 with known pricing have a free tier;1 of 2 with known code status publish open-source code;1 apps show full bars: free, open, on most devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | OpenLITWeb · Windows · Mac · Linux · Self-hosted · API | Full bars | 4 of 6 | Free | 8.1 | ||
| 2 | Evidently AIWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | 4 of 6 | $80/mo | 6.6 | ||
| 3 | W&B WeaveWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | 4 of 6 | $60/mo | 6.6 | ||
| 4 | DeepchecksWeb · Linux · Self-hosted · API | Two bars | 2 of 6 | Free | 6.4 | ||
| 5 | LangWatchWeb · Linux · Self-hosted · API | Two bars | 2 of 6 | €29/mo | 6.4 | ||
| 6 | MemoturnWeb · Linux · Self-hosted · API | Two bars | 2 of 6 | Free | 6.4 | ||
| 7 | NannyMLWeb · Linux · Self-hosted · API | Two bars | 2 of 6 | $399/mo | 6.4 | ||
| 8 | OpikWeb · Linux · Self-hosted · API | Two bars | 2 of 6 | $19/mo | 6.4 | ||
| 9 | Qualdo-MQXWeb · Self-hosted · API | Two bars | 1 of 6 | $79/mo | 6.4 | ||
| 10 | Arize AXWeb · Self-hosted · API | Two bars | 1 of 6 | $50/mo | 6.3 | ||
| 11 | Arize PhoenixWeb · Self-hosted · API | Two bars | 1 of 6 | Free | 6.3 | ||
| 12 | ArthurWeb · Self-hosted · API | Two bars | 1 of 6 | $60/mo | 6.3 | ||
| 13 | BraintrustWeb · Self-hosted · API | Two bars | 1 of 6 | $249/mo | 6.3 | ||
| 14 | Fiddler AIWeb · Self-hosted · API | Two bars | 1 of 6 | Free | 6.3 | ||
| 15 | GalileoWeb · Self-hosted · API | Two bars | 1 of 6 | $100/mo | 6.3 | ||
| 16 | HeliconeWeb · Self-hosted · API | Two bars | 1 of 6 | $79/mo | 6.3 | ||
| 17 | HoneyHiveWeb · Self-hosted · API | Two bars | 1 of 6 | Free | 6.3 | ||
| 18 | LaminarWeb · Self-hosted · API | Two bars | 1 of 6 | $30/mo | 6.3 | ||
| 19 | LangfuseWeb · Self-hosted · API | Two bars | 1 of 6 | $29/mo | 6.3 | ||
| 20 | LangSmithWeb · Self-hosted · API | Two bars | 1 of 6 | $39/mo | 6.3 | ||
| 21 | Maxim AIWeb · Self-hosted · API | Two bars | 1 of 6 | $29/mo | 6.3 | ||
| 22 | LunaryWeb · Self-hosted · API | One bar | 1 of 6 | $20/mo | 5.3 | ||
| 23 | PulsarSelf-hosted · API | One bar | 0 of 6 | 5.3 | |||
| 24 | SUPERWISEWeb · Windows · Mac · Linux · Self-hosted · API · Extension | Two bars | No | 4 of 6 | $9/mo | 5.2 |
Compare all 24 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Drift detection | Performance monitoring |
|---|---|---|---|---|---|---|---|---|
| 1 | OpenLIT | 8.1 | Free plan | Free | Yes | |||
| 2 | Evidently AI | 6.6 | Free plan | $80/mo | Yes | |||
| 3 | W&B Weave | 6.6 | Free plan | $60/mo | Yes | 60 /mo | ||
| 4 | Deepchecks | 6.4 | Free plan | Free | Yes | |||
| 5 | LangWatch | 6.4 | Free plan | €29/mo | Yes | |||
| 6 | Memoturn | 6.4 | Free plan | Free | Yes | |||
| 7 | NannyML | 6.4 | Free plan | $399/mo | Yes | 99 /mo | ||
| 8 | Opik | 6.4 | Free plan | $19/mo | Yes | 19 /mo | ||
| 9 | Qualdo-MQX | 6.4 | Free plan | $79/mo | Yes | 88 /mo | Yes | Yes |
| 10 | Arize AX | 6.3 | Free plan | $50/mo | Yes | 50 /mo | ||
| 11 | Arize Phoenix | 6.3 | Free plan | Free | Yes | |||
| 12 | Arthur | 6.3 | Free plan | $60/mo | Yes | 60 /mo | ||
| 13 | Braintrust | 6.3 | Free plan | $249/mo | Yes | 249 /mo | ||
| 14 | Fiddler AI | 6.3 | Free plan | Free | Yes | |||
| 15 | Galileo | 6.3 | Free plan | $100/mo | Yes | 100 /mo | ||
| 16 | Helicone | 6.3 | Free plan | $79/mo | Yes | 79 /mo | ||
| 17 | HoneyHive | 6.3 | Free plan | Free | Yes | |||
| 18 | Laminar | 6.3 | Free plan | $30/mo | Yes | 30 /mo | Yes | |
| 19 | Langfuse | 6.3 | Free plan | $29/mo | Yes | 29 /mo | ||
| 20 | LangSmith | 6.3 | Free plan | $39/mo | Yes | |||
| 21 | Maxim AI | 6.3 | Free plan | $29/mo | Yes | |||
| 22 | Lunary | 5.3 | $20/mo | No | ||||
| 23 | Pulsar | 5.3 | ||||||
| 24 | SUPERWISE | 5.2 | $9/mo | No | 10 /mo |
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Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.