Mermaid Chart Pricing in 2026
Every plan Mermaid Chart publishes, with the page and date we read it from. Prices we could not find on Mermaid Chart's own site are marked "Not published", never guessed.
| Plan | Price | Billing | Limits | Source |
|---|---|---|---|---|
| Basic | Free | 3 diagrams · limited AI · 1 team and project | mermaid.ai | |
| Plus | $12 per month | annually | unlimited diagrams · 300 AI credits per year · view and comment collaboration | mermaid.ai |
| Premium | $24 per month | annually | 2,000 AI credits per year · unlimited free viewer seats · co-editing · SSO | mermaid.ai |
| Enterprise | Not published | Premium features · custom contracts · support | mermaid.ai |