Pricing made for the way you diagram
Explore different pricing options that scales with your team's needs.
Basic
Free
Plus
$10 per user / month
Billed Annually
Premium
Most Popular
$20 per user / month
Billed Annually
Enterprise
Custom pricing
Billed Annually
Made for teams like yours — trusted by over 5M people and over 200k companies
Compare plans
Usage Limits
Number of diagrams
Up to 6
Unlimited
Unlimited
Unlimited
Diagram size
Limited (60)
Limitless
Limitless
Limitless
AI credits
15
300
2,000
Unlimited*
Collaboration & users
Co-editing & external sharing
Viewer seats
-
-
Unlimited
Unlimited
User consolidation
-
-
-
Security & support
SSO
-
-
-
Customer success manager (CSM)
-
-
-
Custom contract & invoicing
-
-
-
IP management
-
-
-
Yes! The Basic plan gives you access to core features so you can start creating diagrams right away. It’s a great way to explore Mermaid before upgrading.
Plus unlocks unlimited diagrams, limitless diagram size, and 300 AI credits. Premium includes everything in Plus, along with unlimited viewer seats.
Yes – you can start a free trial of Plus or Premium to try advanced features before committing.
Absolutely. You can upgrade, downgrade, or cancel your plan whenever you want. Changes are reflected in your next billing cycle.
We currently offer annual billing only. Monthly plans are not available at this time.
We accept all major credit cards. For Enterprise, we also support invoicing and purchase orders.
Enterprise includes everything in Premium, plus SSO, dedicated account support, custom contract and invoicing, and easy user consolidation. It’s designed for large teams with compliance needs.
Enterprise plans are customized based on your team’s needs. Contact our sales team to get started.
No. The core Mermaid syntax is always free and open-source. Pro and Enterprise add AI features, diagram storage, real-time collaboration, integrations, and security controls.
No. AI features are included in all plans, from capped credits to unlimited use. AI prompts from our paid users are never used for training and all data remains private.
