Is Mermaid worth the price?
Mermaid offers a very generous free tier with its open-source option and a functional 'Basic' tier for free.
The 'Plus' tier at $8/month for unlimited diagrams and scalable AI is highly competitive. This pricing structure is excellent for individual developers and small teams looking for powerful diagramming tools.
Pricing Plans
7-day Free TrialOpen Source
Free
- MIT licensed
- Flowcharts & diagrams
- Text-to-diagram
- Community support
Basic
Free
- 3 diagrams
- Limited AI usage
- Mermaid Chart hosted
Plus
$8/month
- Unlimited diagrams
- Scalable AI usage
- Team collaboration
Premium
Custom
- Massive AI usage
- SSO
- Knowledge management
Hidden Costs & Gotchas
AI usage limits on Basic tier
Premium features require custom quote
No annual discount mentioned
Which Plan Do You Need?
Developers needing open-source diagramming
Individuals creating a few diagrams
Teams requiring collaboration & AI
How Mermaid Compares to Competitors
Compared to Lucidchart, which starts around $7.95/month for basic individual plans, Mermaid's 'Plus' tier at $8/month offers similar value with the added benefit of text-to-diagram and AI features. Draw.io is free and open-source like Mermaid's base, but Mermaid's paid tiers add AI and hosted solutions that Draw.io doesn't natively offer.
Mermaid Pricing FAQ
How much does Mermaid cost?
Mermaid starts at $8/month on the Plus plan. A free plan is also available with limited features.
Does Mermaid have a free plan?
Yes. Mermaid offers a free plan called "Open Source". It includes: MIT licensed, Flowcharts & diagrams, Text-to-diagram.
Does Mermaid offer a free trial?
Yes, Mermaid offers a free trial lasting 7 days. No credit card is typically required to start the trial, though this may vary.
Is there a cheaper alternative to Mermaid?
Yes. Popular alternatives to Mermaid include Whimsical, Eraser, Redash, Observable. Free alternatives include Whimsical, Eraser, Redash. Compare them side-by-side on Toolradar.
Cheaper alternatives to Mermaid
Direct competitors with similar features. Many offer free tiers or lower per-seat pricing.