Coda vs Mermaid

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, Coda comes out ahead. Here is why, point by point.

What the data says

Both cover 1 of the 1 features we compared.
Both have a free plan, so you can try each before you pay.
Both start at $10/mo.
In our Tech stack ranking, Coda places 2 and Mermaid 15 of 72.

Side by side

Coda and Mermaid compared
5 points compared	Coda	Mermaid
Starts at	$10/mo	$10/mo
Free plan	Yes	Yes
API	Yes	No
MCP server	Yes	Yes
Real-time collaboration	Yes	Yes
Links	Visit	Visit

Plans and pricing

Coda

FreeFree
From $10.00/moStarting at $10.00 per month$10/mo

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

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

Who each is for

Choose Coda if…

Teams that build their own trackers, wikis and internal tools, and want documents and database tables in the same page with buttons and automations on top.

Visit Read the review

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

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