AI Diagram Maker vs Mermaid Chart
AI Diagram Maker
aidiagrammaker.comMermaid Chart
mermaid.aiSide by side
| Figure | AI Diagram Maker | Mermaid Chart |
|---|---|---|
| Price from | $10/mo | $12/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 3 | 4 |
| Spec score · AI Diagram Generators | 9.3 (#1) | 7.9 (#17) |
| AI generation | The service generates diagrams from plain text and supports conversational refinement. | Mermaid AI turns natural-language prompts and uploaded PDF, Word, or plain-text files into Mermaid diagrams. |
| Diagram types | Documented diagram choices include flowchart, system architecture, sequence, ERD, and UML class diagrams. | Supported diagram types include flowcharts, sequence diagrams, Gantt charts, ER diagrams, timelines, mind maps, org charts, state diagrams, class diagrams, pie charts, and quadrant charts. |
| Integrations | The MCP server works with Cursor, Claude Desktop, Claude Code, and other MCP-compatible clients. | Official plugins and add-ons cover VS Code, JetBrains IDEs, Cursor, Windsurf, Claude Code, ChatGPT, Confluence, Jira, Google Docs, Microsoft Word, and PowerPoint. |
| Support | The contact page directs users to its Discord community for support, while Plus and Max plans include priority support. | Enterprise is described as including custom contracts, support, and additional services. |
Plans
Mermaid Chart
- BasicFree
- Plus$12 a month
- Premium$24 a month
- EnterprisePriced on request
In their own words
AI Diagram Maker
AI Diagram Maker has no write-up on Specifiction yet; its figures are above.
Mermaid Chart
Mermaid Chart turns plain-text Mermaid syntax into diagrams and refreshes the visual when the text changes. Mermaid AI can also create diagrams from natural-language prompts or uploaded PDF, Word and plain-text files. Supported types include flowcharts, sequence diagrams, Gantt charts, ER diagrams, timelines, mind maps, org charts, state and class diagrams, pie charts and quadrant charts. Teams can co-edit in real time, comment and share live links. Official plugins and add-ons connect it with development environments, AI assistants, documentation tools and office products, including VS Code, JetBrains IDEs, Cursor, Windsurf, Claude Code, ChatGPT, Confluence, Jira, Google Docs, Word and PowerPoint. Mermaid AI exports PNG and SVG files. Mermaid MCP can validate and render diagrams without authentication; authenticated users can use it to manage diagrams and projects. Basic costs nothing and includes three diagrams and 15 AI credits. Plus costs $12 a month billed annually; Premium costs $24 a month billed annually. Trial and paid-tier content is not used to train Mermaid AI models; Basic-tier content may be used to improve services.