Loading tool…
Turns text, code, or prompts into flowcharts, sequence diagrams, and Gantt charts, from the Mermaid.js team.
Mermaid Chart is a diagramming platform built by the team behind the open-source Mermaid.js library, converting text descriptions, code, or documents into flowcharts, sequence diagrams, ER diagrams, Gantt charts, and timelines. It supports AI-prompted generation as well as direct Mermaid syntax editing, real-time collaboration, and integrations with tools like VS Code and Confluence. The vendor's own domain, mermaidchart.com, now redirects permanently to mermaid.ai under the same product. The company, Mermaid Chart, is US-based. The free plan covers a handful of diagrams; the Pro plan is the entry paid tier, billed annually per user.
Pro plan runs $80 per user per year, unlocking unlimited diagrams, AI diagramming, and multi-user editing over the free plan's five-diagram cap.
Use tool ↗Being built by the Mermaid.js maintainers themselves is the real edge here: diagrams-as-code that developers already write in markdown get a proper collaborative editor and AI-assisted generation on top, instead of a third party reverse-engineering the syntax. The free tier's five-diagram cap is tight, and the vendor's recent rebrand from mermaidchart.com to mermaid.ai makes some third-party pricing pages describing it look slightly out of date.
Watch out: The product recently moved its primary domain from mermaidchart.com to mermaid.ai; use the new domain directly rather than relying on older bookmarks or third-party links.
Side-by-side fact sheets against the competitors our research names — pricing, platforms, API and both verdicts on one page.
No reviews yet — be the first to review Mermaid Chart.
Reviews are tied to your EffectHub account — one review per tool, so the rating for Mermaid Chart reflects real users.
No questions yet — ask the first one about Mermaid Chart.
Questions about Mermaid Chart are tied to your EffectHub account, so answers can reach you and the section stays free of spam.