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Paid plans start at $10/mo. There's also a free plan.
Mermaid Chart has a free Basic plan, while paid plans start at $10 per user per month on annual billing: Plus is $10 and Premium is $20. There is no monthly billing option listed. Basic includes 15 AI credits, but its diagram limit conflicts: the plan overview says 3, while the comparison table says up to 6. Plus includes 300 AI credits per year; Premium includes 2,000 per year and unlimited free viewer seats. Enterprise pricing is custom.
01Every plan, line by line
| Plan | Billed annually | Billed monthly | Built for |
|---|---|---|---|
| Basic | $0 | $0 | Getting started and simple flows |
| Plus | $10 | — | Individuals who diagram often |
| Premium | $20 | — | Advanced users and teams |
| Enterprise | — | Quote | Organizations needing scale and control |
What a team pays per month
| Plan | 1 seat | 5 seats | 10 seats | 25 seats |
|---|---|---|---|---|
| Plus | $10 | $50 | $100 | $250 |
| Premium | $20 | $100 | $200 | $500 |
02What the plan grid doesn't tell you
Annual-only paid plans
The pricing page lists Plus at $10 and Premium at $20 per user per month, billed annually. It does not list a monthly-billing option.
Basic diagram cap conflicts
The plan overview says Basic includes 3 diagrams; the comparison table says up to 6. Confirm the limit before relying on the free plan.
AI credits are limited
Basic includes 15 credits, Plus 300 per year and Premium 2,000 per year. Enterprise lists unlimited AI credits; paid add-on pricing is not published.
Enterprise pricing is custom
The Enterprise plan has custom pricing and contract terms, so the pricing page does not provide a standard per-user cost.
03Which plan should you buy?
| If you are… | Get | Why |
|---|---|---|
| Testing the editor or simple flows | Basic | It is free and includes 15 AI credits, but check the conflicting diagram cap before depending on it. |
| An individual diagramming often | Plus | At $10 per user per month billed annually, it adds unlimited diagrams, limitless diagram size and 300 AI credits per year. |
| Teams needing scale and control | Enterprise | It lists SSO, IP management and unlimited AI credits, but pricing is custom. Premium is the listed option for teams needing unlimited viewer seats. |
04Is Mermaid Chart worth the money?
Mermaid Chart is worth considering if your team needs both code-based diagramming and visual editing, plus live collaboration. The pricing page lists a free entry plan and clear per-user annual prices for Plus and Premium. The trade-off is less flexibility for buyers who need monthly billing, and Basic has an inconsistent diagram cap across the plan details. Enterprise adds controls such as SSO, but its custom pricing makes cost comparison harder. We would confirm the Basic limit and annual terms before switching.
Mermaid Chart pricing FAQ
How much does Mermaid Chart cost?
Mermaid Chart’s Basic plan is free. The pricing page lists Plus at $10 per user per month and Premium at $20 per user per month, both billed annually. Enterprise has custom pricing, and the page does not list a standard rate.
Does Mermaid Chart have a free plan?
Yes. Basic is free and lists 15 AI credits, one team and project creation, and a limited diagram size of 60. Its diagram count is unclear: the plan overview says 3 diagrams, while the comparison table says up to 6.
Can I pay for Mermaid Chart monthly?
The pricing information lists annual billing only for paid plans. Plus is $10 per user per month and Premium is $20 per user per month when billed annually. A monthly billing option or its price is not published.
What is the difference between Plus and Premium?
Both plans include unlimited diagrams and limitless diagram size. Plus includes 300 AI credits per year. Premium includes 2,000 per year, unlimited free viewer seats, and unlimited teams and project creation. Plus is $10 and Premium $20 per user per month, billed annually.