Simple, Transparent Pricing

Clear credit limits and feature access. Checkout availability is shown in the editor.

Free
$0/month

Perfect for trying out Mermaid diagrams

  • 10 shared AI credits each month
  • 20 diagram templates
  • Real-time preview
  • Export to SVG & PNG
  • 10 Mermaid themes
  • Version history
  • Diagram sharing
  • Priority support
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Pro
30 credits/month

For users who need saved history and hosted sharing

  • 30 shared AI credits each month
  • 20 diagram templates
  • Real-time preview
  • Export to SVG & PNG
  • 10 Mermaid themes
  • Full version history
  • Public diagram sharing
  • Checkout status shown in the editor
Open Editor →
AI credit costs
2 / 4

Credits are shared by the AI actions below

  • Generate a diagram: 2 credits
  • AI improvement: 4 credits
  • Monthly credits reset with the plan period
  • Current billing status is shown in the editor
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Feature Comparison

FeatureFreePro
Monthly AI credits10 shared credits30 shared credits
Diagram Types20 templates20 templates
Real-time Preview✓✓
Export (SVG, PNG)✓✓
Mermaid Themes1010
Version History✗✓
Diagram Sharing✗✓
AI generation cost2 credits2 credits

Frequently Asked Questions

What are AI credits?
The free plan includes 10 shared AI credits per month. Diagram generation uses 2 credits and AI improvement uses 4 credits.
What does Pro add?
Pro includes 30 shared monthly AI credits plus version history and hosted diagram sharing.
Is checkout available?
The editor shows the current checkout status. This page does not promise a price or payment method while checkout is unavailable.
Do the AI actions cost the same?
No. Generating a diagram uses 2 credits, while AI improvement uses 4 credits.