Comet ML Free Plan 2026: What's Included & What's Not
Honest breakdown of the free tier limits and features
Comet ML costs Free to $19 per user/month as of April 2026. Pricing depends on your chosen tier, contract length, and negotiated discounts.
Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.
- Free tier: No free tier available
Yes, Comet ML offers a forever free plan as of April 2026. The free tier includes 8 features with limits on usage. Paid plans start at $19/user/month (Pro). Pricing verified from 2 sources by CostBench.
Comet ML's free plan is available indefinitely with no time limit.
What's Included in the Free Plan
- Up to 10 team members
- 25,000 spans per month
- 60-day data retention
- LLM tracing & analysis
- Datasets & experiments
- LLM-as-a-judge metrics
- Agent Optimizer Suite
- Community support (Slack, GitHub)
What's NOT Included (Paid Only)
- Up to 50 team members
- 100,000 spans per month
- Customizable monthly span limits
- Customizable data retention periods
- Additional spans at $5/100k
- Additional span retention at $29/100k spans
- Email support
- Optional MLOps Platform add-on
You'll Need to Upgrade When...
- You exceed the user limit
- You need features like Up to 50 team members or 100,000 spans per month
- You require premium support or SLA guarantees
- You need to remove branding or watermarks
- You need advanced integrations or API access
Hidden Restrictions on Free Plan
- Fair usage cap on training hours
- 100 GB storage limit
- Community support only
Free vs Paid: Which Do You Need?
Free Plan is Enough If...
- You're an individual or very small team
- You need only basic features
- You don't mind usage limits
- Branding on output is acceptable
- Community support is sufficient
You Need Paid If...
- Your team is growing beyond limits
- You need advanced features
- Professional branding is required
- You need priority support
- Integrations/API access is critical
Free vs Pro Plan Comparison
| Free $0 | Pro $19/user/month | |
|---|---|---|
| Features | 8 included | 9+ included |
| Support | Community/Email | Priority Support |
| Branding | Comet ML branding | Your branding |
| Best For | Individuals and small teams getting started with LLM observability and evaluation | Growing teams needing expanded LLM observability with customizable usage limits |
Frequently Asked Questions
01 Is Comet ML free?
Yes, Comet ML offers a forever free plan with 8 core features included. However, there are limits on users and features that may require upgrading.
02 What's included in Comet ML's free plan?
Comet ML's free plan includes: Up to 10 team members, 25,000 spans per month, 60-day data retention, LLM tracing & analysis, Datasets & experiments, and 3 more features. Key limits include basic usage caps.
03 What's NOT included in Comet ML's free plan?
The free plan excludes: Up to 50 team members, 100,000 spans per month, Customizable monthly span limits, Customizable data retention periods, Additional spans at $5/100k. You'll also have Comet ML branding and limited support options.
04 When should I upgrade from Comet ML's free plan?
Consider upgrading when: you hit user or storage limits, need features like Up to 50 team members or 100,000 spans per month, require premium support, or want to remove branding. The cheapest paid plan starts at $19/user/month.
05 Is Comet ML's free plan really free forever?
Yes, Comet ML's free plan is available indefinitely with no time limit. However, feature and usage limits may restrict what you can do without upgrading to a paid plan.