Best Model Monitoring Software in 2026
Updated
After deployment, models can change in ways that affect data quality, behavior, or performance. Compare drift detection, bias monitoring, data quality monitoring, and performance monitoring to see which signals are covered. Deployment options and the monitored model limit help frame operational fit; a free plan and paid-from pricing add cost considerations. Evidently AI, W&B Weave, and Opik are among the listed products, with Deepchecks and NannyML also included. Consider which monitoring concerns matter for your models, how many you need to watch, and whether the deployment choices fit your environment.
24ranked
21free plans on this page
$10/molowest paid tier
8 Oct 2026last checked
Model Monitoring Software, ranked on how quickly a newcomer can get going.22 of 22 products with recorded free access can be tried for free.
- 1 Evidently AIPaid from $80/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 2 W&B WeavePaid from $60/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 3 OpikPaid from $19/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 4 DeepchecksFree plan
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 5 NannyMLPaid from $399/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 6 Qualdo-MQXPaid from $79/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 7 HeliconePaid from $79/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 8 Maxim AIPaid from $29/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: no
- 9 MemoturnFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 10 OpenLITFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: yes
- 11 GalileoPaid from $100/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 12 LaminarPaid from $30/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 13 LangfusePaid from $29/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 14 LangSmithPaid from $39/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 15 LangWatchPaid from €29/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 16 Arize AXPaid from $50/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 17 ArthurPaid from $60/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 18 BraintrustPaid from $249/mo
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 19 Fiddler AIFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 20 HoneyHiveFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 21 SUPERWISEPaid from $10/mo
- Free to practise on: no
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 22 Arize PhoenixFree plan
- Free to practise on: yes
- Well documented: yes
- Runs where you work: no
- 23 Pulsar
- Well documented: yes
- Runs where you work: no
- 24 LunaryPaid from $20/mo
- Free trial: no
- Well documented: yes
- Runs where you work: no
Compare all 24 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Drift detection | Performance monitoring |
|---|---|---|---|---|---|---|---|---|
| 1 | Evidently AI | 7.9 | Free plan | $80/mo | Yes | |||
| 2 | W&B Weave | 7.9 | Free plan | $60/mo | Yes | 60 /mo | ||
| 3 | Opik | 7.8 | Free plan | $19/mo | Yes | 19 /mo | ||
| 4 | Deepchecks | 7.7 | Free plan | Free | Yes | |||
| 5 | NannyML | 7.7 | Free plan | $399/mo | Yes | 99 /mo | ||
| 6 | Qualdo-MQX | 7.7 | Free plan | $79/mo | Yes | 88 /mo | Yes | Yes |
| 7 | Helicone | 7.6 | Free plan | $79/mo | Yes | 79 /mo | ||
| 8 | Maxim AI | 7.6 | Free plan | $29/mo | Yes | |||
| 9 | Memoturn | 7.3 | Free plan | Free | Yes | |||
| 10 | OpenLIT | 7.3 | Free plan | Free | Yes | |||
| 11 | Galileo | 7.1 | Free plan | $100/mo | Yes | 100 /mo | ||
| 12 | Laminar | 7.1 | Free plan | $30/mo | Yes | 30 /mo | Yes | |
| 13 | Langfuse | 7.1 | Free plan | $29/mo | Yes | 29 /mo | ||
| 14 | LangSmith | 7.1 | Free plan | $39/mo | Yes | |||
| 15 | LangWatch | 7.1 | Free plan | €29/mo | Yes | |||
| 16 | Arize AX | 7.0 | Free plan | $50/mo | Yes | 50 /mo | ||
| 17 | Arthur | 7.0 | Free plan | $60/mo | Yes | 60 /mo | ||
| 18 | Braintrust | 7.0 | Free plan | $249/mo | Yes | 249 /mo | ||
| 19 | Fiddler AI | 7.0 | Free plan | Free | Yes | |||
| 20 | HoneyHive | 7.0 | Free plan | Free | Yes | |||
| 21 | SUPERWISE | 7.0 | No | $10/mo | No | 10 /mo | ||
| 22 | Arize Phoenix | 6.9 | Free plan | Free | Yes | |||
| 23 | Pulsar | 6.4 | ||||||
| 24 | Lunary | 6.1 | $20/mo | No |
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