Machine Learning · head to head
Comet ML vs Rootly
Comet ML
Machine Learning
Platform for tracking, comparing, and optimizing ML experiments
- From
- Free
- Rated
- -
Rootly
Logging
AI-native incident management with automation, on-call, and root cause analysis
- From
- $20/user-month
- Rated
- -
The short version
- Only Comet ML has a free tier, so it costs nothing to try first.
- Each has a real cost: Comet ML the free cloud tier caps data at 25,000 spans a month with 60 day retention; Rootly pricing higher than some competitors for basic features
- They diverge on capability: Comet ML covers Experiment tracking, Rootly covers AI SRE automation.
Where they differ
Only the attributes on which Comet ML and Rootly actually diverge.
Identical on both: user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Comet ML
- Experiment tracking
- Code versioning
- Model registry
- Hyperparameter optimization
- Production monitoring
- PyTorch
- TensorFlow
- Keras
Only in Rootly
- AI SRE automation
- Alert routing
- On-call management
- Incident response
- Call routing
- AI meeting bot
- Status pages
What people use each for
The jobs each tool is most often brought in to do.
Comet ML
- LLM observability and monitoringnot Rootly
- AI agent testing and debuggingnot Rootly
- Experiment tracking for machine learningnot Rootly
- Model registry and version managementnot Rootly
- ML model training monitoringnot Rootly
Rootly
- Automate on-call and incident response workflowsnot Comet ML
- Run root cause analysis with AI assistancenot Comet ML
- Track and improve Mean Time to Mitigation (MTTR)not Comet ML
- Coordinate response across distributed teamsnot Comet ML
- Learn from post-incident retrospectivesnot Comet ML
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Comet ML
- The free cloud tier caps data at 25,000 spans a month with 60 day retention
- Retention stays at 60 days even on the paid Pro plan, and extending it is a $29 per 100k spans add on
- Overage on Pro is $5 per additional 100,000 spans
- The free MLOps tier is a single user with 100 GB of storage and training hours governed by a fair usage policy
- Pro MLOps is $19 per user per month and caps the team at 10 users
Rootly
- Pricing higher than some competitors for basic features
- AI SRE features require separate contact-sales engagement
- Learning curve for advanced automation features
- Per-user pricing increases costs as team grows
Pricing, plan by plan
Comet ML
Free- Free CloudFree
- Up to 10 team members
- 25,000 spans per month
- 60-day data retention
- Pro Cloud$19/month
- Up to 50 team members
- 100,000 spans per month
- 60-day data retention
- MLOps FreeFree
- 1 user with fair usage policy
- Experiment tracking
- Dataset management
- MLOps Pro$19/user/month
- Up to 10 users
- 1,500 training hours included
- 500GB storage included
Rootly
$20/user-month- Incident Response Essentials$20/user-month
- Response with Slack integration
- @Rootly AI Chat
- AI Similar Incidents detection
- Incident Response Enterprise$undefined/custom
- All Essentials features
- Custom forms and incident types
- Private incidents
- On-Call Essentials$20/user-month
- Alert grouping and routing
- Live call routing (1 phone number)
- Schedules and escalation policies
- On-Call Enterprise$undefined/custom
- All Essentials features
- 5 phone numbers for call routing
- Unlimited schedules
Which should you pick?
Choose Comet ML if
- You need experiment tracking.
- You want to start without paying.
- You work on Web, Linux, Mac, Windows.
- You also want code versioning.
Choose Rootly if
- You need ai sre automation.
- You work on Web, Mobile, Slack, Microsoft Teams.
- You also want alert routing.
Questions people ask
- Is Comet ML or Rootly better?
- Neither clearly leads. Comet ML starts at Free and Rootly at $20/user-month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Comet ML or Rootly?
- Comet ML has a free tier; the other does not. Paid plans start at Free for Comet ML and $20/user-month for Rootly.
- Does Comet ML or Rootly run on more platforms?
- Comet ML runs on Web, Linux, Mac, Windows. Rootly runs on Web, Mobile, Slack, Microsoft Teams.
- Can I use Comet ML for free?
- Yes. Comet ML has a free tier, so you can try it without paying. Rootly starts at $20/user-month.
- What is Comet ML best used for?
- Comet ML is most often used for llm observability and monitoring, ai agent testing and debugging, experiment tracking for machine learning, model registry and version management. Of those, llm observability and monitoring and ai agent testing and debugging are not what Rootly is typically brought in for.
- What can Comet ML do that Rootly cannot?
- Comet ML covers Experiment tracking, Code versioning, Model registry, Hyperparameter optimization. Rootly covers AI SRE automation, Alert routing, On-call management, Incident response.
Answered from the vendors’ own pages
Comet ML: Does Comet.ml offer a free plan?
Yes, Comet.ml offers free tiers for both Opik (cloud observability) and MLOps platforms. Free Cloud Opik includes up to 10 team members and 25,000 spans/month. Free MLOps tier is limited to 1 user.
SourceRootly: How much does Rootly cost?
Rootly charges $20/user/month for both Incident Response and On-Call Essentials plans. Enterprise plans require contacting sales. Startups under 100 employees with less than $50M raised get up to 50% discount.
SourceComet ML: How many team members can use the free Comet.ml tier?
Free Cloud supports up to 10 team members. The Pro Cloud plan supports up to 50 team members at $19/month.
SourceRootly: What is Rootly AI SRE?
AI SRE is an advanced feature that provides automated root cause analysis, alert correlation with system changes, impact analysis, and remediation suggestions. Pricing requires contact with sales.
SourceComet ML: What is a span in Comet.ml pricing?
A span represents a single tracked operation such as model requests or function calls. Free Cloud tier includes 25,000 spans per month.
SourceRootly: Does Rootly integrate with Slack?
Yes, Rootly natively integrates with Slack for incident response workflows, allowing teams to manage incidents directly in Slack.
SourceComet ML: Does Comet.ml offer academic pricing?
Yes, a free Pro plan is available for academic users; verification is required via signup.
SourceRootly: Are there discounts for small companies?
Yes, startups under 100 employees or less than 25 employees can get special pricing up to 50% discount. Contact Rootly sales for details.
SourceRelated pages
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