Mermaid Pricing 2026
Plans, hidden costs, and alternatives compared
Cite this data: Toolradar, Mermaid pricing verified Sep 2026, toolradar.com/tools/mermaid/pricing
Mermaid starts at $8/month on the Plus plan.
Verified Sep 2026 from the official pricing page.
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
How Mermaid compares
4 of 4 direct competitors offer a free plan.
| Tool | Starting price | Free plan |
|---|---|---|
| Mermaid | $8/month, billing unit not specified | Yes |
| draw.io | $1.70/user/month | Yes |
| Lucidchart | $9/month, billing unit not specified | Yes |
| Excalidraw | $6/month, billing unit not specified | Yes |
| Lucid Train | $2.50/month, billing unit not specified | Yes |
Mermaid Pricing FAQ
How much does Mermaid cost?
Mermaid starts at $8/month on the Plus plan. A free plan is also available.
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.
What are alternatives to Mermaid?
Alternatives to Mermaid include draw.io, Lucidchart, Excalidraw, Lucid Train. draw.io starts at $1.70/user/month; Lucidchart starts at $9/month, billing unit not specified; Excalidraw starts at $6/month, billing unit not specified.
Mermaid alternatives
Direct competitors. Starting prices match the table above.
Sources
- Official Mermaid pricing: mermaid.js.org (verified Sep 2026)
- Cite this data: Toolradar, Mermaid pricing verified Sep 2026, toolradar.com/tools/mermaid/pricing
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