Mermaid Chart
by Mermaid Chart Inc🔀 AI DiagrammingThe official visual editor for Mermaid diagrams — trusted by Google, Deloitte, Microsoft, Shopify, and Atlassian for text-based technical diagramming
Mermaid diagram editor, AI diagram generation, real-time collaboration, view & comment (free), unlimited diagrams (Plus+), 300 AI credits/yr (Plus), 2,000 AI credits/yr (Premium), SSO, co-editing, robust security
Last updated: March 29, 2026 · Pricing verified from official sources. Prices are subject to change by the provider.
Pricing
Price stable
Free TierYes — Basic: 3 diagrams, limited AI, 1 team & project, limited diagram size
Entry PlanPlus: paid annual plan (unlimited diagrams, unlimited diagram size, 300 AI credits/yr, view & comment collaboration)
Team PlanPremium: paid annual plan (2,000 AI credits/yr, unlimited free viewer seats, unlimited teams & projects, co-editing, SSO, robust security)
EnterpriseCustom pricing
API PricingOpen-source Mermaid.js library (self-hostable)
See full API pricing & compare models →Prices exclude applicable taxes (VAT/GST/sales tax varies by region). Monthly prices shown — annual plans typically save 15-20%.
Specifications
Context / InputText/Mermaid syntax or AI text prompt → diagram
Max OutputFlowcharts, sequence diagrams, ERDs, Gantt charts, state diagrams, all Mermaid types (PNG, SVG export)
ModalitiesText → Mermaid diagram
Agent / AgenticNo
SecurityEnterprise: custom contract, secure diagram ownership (IP transfer to admin), dedicated CSM, custom invoicing
Self-hostedYes — open-source via mermaid.live (self-hostable)
AI Fit Score Benchmark Data
Performance indicators used in our Fit Score engine. Scores are normalised 0–100 based on industry benchmarks and testing.
76
Reasoning
80
Code Quality
85
Speed
80
Ecosystem
Mermaid Chart — Who Is It Best For?
Developers, technical writers, software teams who prefer diagrams-as-code, documentation-focused teams
Ideal for:DevelopersFoundersother
✅ Strengths
• Free tier available
• Text/Mermaid syntax or AI text prompt → diagram context
• Enterprise: custom contract, secure diagram ownership (IP transfer to admin), dedicated CSM, custom invoicing certified
• Mermaid diagram editor
💭 Consider
• Enterprise plan may be required for teams
💡 Budget tip: Start with Mermaid Chart's free tier to test it. For a free alternative, check out Eraser.
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Frequently Asked Questions
How much does Mermaid Chart cost?
Mermaid Chart offers a free tier. Enterprise pricing is available on request.
Is Mermaid Chart free?
Yes, Mermaid Chart offers a free tier with limited features. Contact sales for paid plan pricing.
What is Mermaid Chart best for?
Mermaid Chart is best for Developers, technical writers, software teams who prefer diagrams-as-code, documentation-focused teams. Key features include: Mermaid diagram editor, AI diagram generation, real-time collaboration, view & comment (free), unlimited diagrams (Plus+), 300 AI credits/yr (Plus), 2,000 AI credits/yr (Premium), SSO, co-editing, robust security.
Is Mermaid Chart right for you?
Get a personalised AI Fit Score based on your role, budget, team size, and priorities.
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AiToolsMentor.com · Pricing verified March 29, 2026 · AI Tools Mentor Fit Score