Mermaid Live Editor
Mermaid Live Editor is the public diagram-as-code desk: type flowchart TD on the left, watch the graph on the right.
OUR TAKE
Pick Mermaid Live Editor for engineers who already write Mermaid in docs. Mermaid.ai is a login wall.
Good fit
Engineers who already write Mermaid in docs.
Poor fit
Facilitators who need a sticky-note mural (Mural) or C4 architecture versions (IcePanel).
mermaid.live / Mermaid syntax · Plus $10/mo yearly · Premium $20/mo yearly
USD, before tax · Checked 2026-10-28 · mermaidchart.com/pricing
OUR TAKE
Pick Mermaid Live Editor for engineers who already write Mermaid in docs. Mermaid.ai is a login wall. we did not ship that as the cover.
Good fit
Engineers who already write Mermaid in docs.
Poor fit
Facilitators who need a sticky-note mural (Mural) or C4 architecture versions (IcePanel).
mermaid.live / Mermaid syntax · Plus $10/mo yearly · Premium $20/mo yearly
USD, before tax · Checked 2026-10-28 · mermaidchart.com/pricing
What it costs
USD, before tax · Checked 2026-10-28 · mermaidchart.com/pricing
mermaid.live / Mermaid syntax
MIT. Self-host the renderer if you want
$0
Mermaid Chart Basic
FAQ vs table disagreed on diagram count (3 on the card, up to 6 on the table). Treat Basic as a small hosted
$0
Plus
/ user / month, . Unlimited diagrams; 300 AI credits / year
Lowest paid
$10/mo yearly
Premium
/ user / month, . 2,000 AI credits; unlimited viewers
$20/mo yearly
Enterprise
Not published by the vendor
Not published by the vendor
Checked 2026-10-28·mermaidchart.com/pricing
Before you pay
Good fit
Engineers who already write Mermaid in docs.
Poor fit
Facilitators who need a sticky-note mural (Mural) or C4 architecture versions (IcePanel).
Watch out
mermaid.ai is a login wall. we did not ship that as the cover.
Instead, try
Eraser if architecture diagrams with a hosted desk when you want more than Mermaid syntax; Excalidraw if hand-drawn whiteboard when you do not want to write code
Compare Mermaid Live Editor with
Limits, in full
- 01
mermaid.ai is a login wall. we did not ship that as the cover.
- 02
Plus / Premium are yearly-only
- 03
A code diagram, not a workshop board
If Mermaid Live Editor isn't it
Why: architecture diagrams with a hosted desk when you want more than Mermaid syntax.
Free· paid from$15/mo yearly
Free is 3 files and 3 AI diagramsChecked 2026-10-23·eraser.io/pricing
vs Mermaid Live Editor
Why: hand-drawn whiteboard when you do not want to write code.
Free· paid from$7/user/mo
Comments, cloud scenes, and presentations print on PlusChecked 2026-10-23·plus.excalidraw.com/pricing
vs Mermaid Live EditorLimits & alternatives3 limits · Eraser, Excalidraw instead
Limits, in full
- 01
mermaid.ai is a login wall. we did not ship that as the cover.
- 02
Plus / Premium are yearly-only
- 03
A code diagram, not a workshop board
If Mermaid Live Editor isn't it
Why: architecture diagrams with a hosted desk when you want more than Mermaid syntax.
Free· paid from$15/mo yearly
Free is 3 files and 3 AI diagramsChecked 2026-10-23·eraser.io/pricing
vs Mermaid Live EditorWhy: hand-drawn whiteboard when you do not want to write code.
Free· paid from$7/user/mo
Comments, cloud scenes, and presentations print on PlusChecked 2026-10-23·plus.excalidraw.com/pricing
vs Mermaid Live Editor