Clay 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, Clay 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.
Mermaid starts lower, at $10/mo against $185/mo.
In our Tech stack ranking, Clay places 18 and Mermaid 15 of 72.

Side by side

Clay and Mermaid compared
At a glance	Clay	Mermaid
Starts at	$185/mo	$10/mo
Free plan	Yes	Yes
API	Yes	No
MCP server	Yes	Yes
Links	Visit	Visit

Plans and pricing

Clay

Free500 actions and 100 data credits a month, unlimited seats, up to 200 rows per table.Free
LaunchFrom $185 a month on monthly billing with 15,000 actions a month; annual billing is about 10 percent cheaper.$185/mo
GrowthFrom $495 a month on monthly billing with 40,000 actions a month; annual billing is about 10 percent cheaper.$495/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 Clay if…

B2B sales, growth and RevOps teams and agencies who build targeted prospect lists, enrich them from several data sources and write research-based outreach.

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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