Our take
Pick Eraser if you're on a engineering team who will stay on Free at $0/member/month (3 files / 3 AI diagrams / 7-day history) while they open a first region frame, then Starter at $15/member/month billed annually ($20 monthly) when they need unlimited files — not Business $45/$60 unless they need SAML / 250 AI diagrams. Pick Mermaid Live Editor if you're an engineer who already write Mermaid in docs. Skip Mermaid
Best for
Eraser A diagram file you start at a public $
Mermaid Live Editor A flowchart from text
Free plan
Eraser $0 · / member / mo. “Free forever.” 3 files. 3 AI diagrams. 7-day version history. Unlimited guests. Diagram-as-code. Markdown notes. GitHub, Notion, Confluence & VS Code
Mermaid Live Editor $0 · mIT. Self-host the renderer if you want
Lowest paid
Eraser Starter $15/mo yearly
Mermaid Live Editor Plus $10/mo yearly
Next step up
Eraser Business $45/mo yearly
Mermaid Live Editor Premium $20/mo yearly
Runs where
Eraser Hosted
Mermaid Live Editor Hosted
Watch out
Eraser Free is 3 files and 3 AI diagrams
Mermaid Live Editor mermaid.ai is a login wall
Last checked
Eraser 2026-10-23 · eraser.io/pricing
Mermaid Live Editor 2026-10-28 · mermaidchart.com/pricing
engineering teams who will stay on Free at $0/member/month (3 files / 3 AI diagrams / 7-day history) while they open a first region frame, then Starter at $15/member/month billed annually ($20 monthly) when they need unlimited files — not Business $45/$60 unless they need SAML / 250 AI diagrams.
Read the Eraser pageengineers who already write Mermaid in docs.
Read the Mermaid Live Editor page
