Best Model Monitoring Software in 2026
Updated
In short: Evidently AI is ranked #1 of 24 as of 3 October 2026, ahead of W&B Weave and OpenLIT. The best-ranked option with a free plan is W&B Weave. The lowest first paid tier on this page is SUPERWISE at $10/mo.
Model monitoring software helps teams keep watch on model behavior and the data and performance around it. The ranking opens with W&B Weave, Arize AX, and Opik, followed by Langfuse and OpenLIT. Compare drift detection, bias monitoring, data quality monitoring, and performance monitoring to focus on the kinds of issues you need to track. Deployment options and monitored model limit can help you assess operational fit, while free-plan availability and paid-from pricing give cost context. Review the listed details against the models and monitoring needs you need to support.
24 model monitoring software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Evidently AI Top pick · 7.3 Free plan · $80/mo
#2 W&B Weave Runner-up · 7.3 Free plan · $60/mo
#3 OpenLIT Also great · 7.2 Free plan · Free- Free planFree trial apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms$80/mofirst paid tier About Evidently AIVisit site - Free planFree trial apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Paid from
- 60 /mo
RecognisedDocumentedFree planPlatforms$60/mofirst paid tier About W&B WeaveVisit site - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial apiLinuxself-hostedWeb
- Free plan
- Yes
- Paid from
- 19 /mo
RecognisedDocumentedFree planPlatforms$19/mofirst paid tier About OpikVisit site - Free planFree trial apiLinuxself-hostedWeb
- Free plan
- Yes
- Bias monitoring
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial apiLinuxself-hostedWeb
- Free plan
- Yes
- Paid from
- 99 /mo
RecognisedDocumentedFree planPlatforms$399/mofirst paid tier About NannyMLVisit site - Free planFree trial apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 88 /mo
- Drift detection
- Yes
- Performance monitoring
- Yes
- Data quality monitoring
- Yes
RecognisedDocumentedFree planPlatforms$79/mofirst paid tier About Qualdo-MQXVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 60 /mo
- Bias monitoring
- Yes
RecognisedDocumentedFree planPlatforms$60/mofirst paid tier About ArthurVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 249 /mo
RecognisedDocumentedFree planPlatforms$249/mofirst paid tier About BraintrustVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 100 /mo
RecognisedDocumentedFree planPlatforms$100/mofirst paid tier About GalileoVisit site - Free planFree trial apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 79 /mo
RecognisedDocumentedFree planPlatforms$79/mofirst paid tier About HeliconeVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 30 /mo
- Performance monitoring
- Yes
RecognisedDocumentedFree planPlatforms$30/mofirst paid tier About LaminarVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 29 /mo
RecognisedDocumentedFree planPlatforms$29/mofirst paid tier About LangfuseVisit site - Free planFree trial apiself-hostedWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms$29/mofirst paid tier About Maxim AIVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 50 /mo
RecognisedDocumentedFree planPlatforms$50/mofirst paid tier About Arize AXVisit site - Free trial apiLinuxmacOSself-hostedWebWindows
- Free plan
- No
- Paid from
- 10 /mo
- Bias monitoring
- Yes
RecognisedDocumentedFree planPlatforms$10/mofirst paid tier About SUPERWISEVisit site - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WebLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Performance monitoring
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms - RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which model monitoring software is ranked first on Everything Xiaomi?
Evidently AI is ranked #1 of 24 with a score of 7.3. W&B Weave is second and OpenLIT third.
How many of these have a free plan?
15 of the 24 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, SUPERWISE has the lowest first paid tier we found: $10/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.