Mermaid vs Trello

Two Tech stack tools side by side: what each does, what it costs and who it suits.

The verdict Side by side Plans and pricing Who each is for Other options

The verdict

On the data we hold, Trello comes out ahead. Here is why, point by point.

What the data says

Both have a free plan, so you can try each before you pay.
Trello starts lower, at $5/mo against $10/mo.
In our Tech stack ranking, Trello places 37 and Mermaid 15 of 72.

Side by side

Mermaid and Trello compared
At a glance	Mermaid	Trello
Starts at	$10/mo	$5/mo
Free plan	Yes	Yes
API	No	Yes
MCP server	Yes	Yes
Links	Visit	Visit

Plans and pricing

Mermaid

BasicFree plan with up to 3 diagrams, limited diagram size and limited AI.Free
PlusUnlimited diagrams and 300 AI credits a year; 10 per user per month billed annually.$120/yr/seat
Premium2,000 AI credits a year, free viewer seats and unlimited teams; 20 per user per month billed annually.$240/yr/seat

Trello

FreeFree for up to 10 collaborators per Workspace.Free
StandardPer user; $6 monthly or $5 per month billed annually.$6/mo/seat
PremiumPer user; $12.50 monthly or $10 per month billed annually; for teams up to 100.$12.50/mo/seat
EnterprisePer user, $17.50 per month billed annually ($210 per user per year).$210/yr/seat

Prices as the vendors list them. They change often; the final price is on their sites.

Who each is for

Choose Mermaid if…

Developers, technical writers and operations teams who keep diagrams as text next to their code and docs, so they stay versioned and never turn into stale screenshots.

Visit Read the review

Choose Trello if…

Small teams and founders who want a simple, visual kanban board for tasks and light projects, with quick setup and little training.

Visit Read the review

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