HeadlarkDraft — needs reviewNot published. Every claim about the other product links to its source; re-check them before this page goes live.
Headlark vs Alli AI
Checked 2026-10-20
In short: Alli AI is an on-page SEO platform for agencies that installs as a snippet, WordPress plugin or tag-manager tag and changes pages without source code edits. Headlark writes metadata into the HTML at build time, into Webflow through its API, or through its WordPress plugin. If you manage many sites you can't build or deploy yourself, Alli AI's no-code install fits. If you control the build, Headlark puts the tags in the HTML itself.
At a glance
| Headlark | Alli AI | |
|---|---|---|
| Install | One command after the build, a Netlify plugin, a Webflow webhook, a WordPress plugin, or a snippet | "WordPress plugin, JavaScript snippet, or your existing tag manager"; "No source code modifications" (pricing page) |
| Plans | Free, Starter, Growth (1 site each), Agency (10 sites) | Business (5 sites, 1,250 pages), Agency (15 sites, 5,000 pages), Enterprise (50 sites, 20,000 pages) (pricing page) |
| Trial | Free plan, 25 pages | "All plans include a 10 day free trial" (pricing page) |
| Pricing model | Per page and rewrite | Per plan, with add-ons for extra sites and pages |
A note on script-applied tags
Tags added by JavaScript in the browser are seen by Google, which renders JavaScript, but not by link previewers such as Facebook, LinkedIn, Slack and X, which read the raw HTML. This applies to any snippet-based tool, including Headlark's own snippet. We haven't verified whether Alli AI also offers a server-side delivery option; check their docs.
Where Alli AI is the better choice
- You manage many client sites where you can't touch the build or the CMS.
- You want a broader on-page SEO platform with an agency dashboard and white-label options on higher plans.
Where Headlark is the better choice
- You control the build: tags go into the HTML files, so every crawler and link previewer sees them.
- One small site: free for 25 pages, Starter €39/month for 500 pages.
- No script on your pages and no visitor data sent anywhere (build and Webflow routes).
Pricing
Alli AI's pricing page showed two different sets of monthly prices on 2026-10-20, so we've left them out. See alliai.com/pricing. Headlark: free for 25 pages, Starter €39/month, Growth €89/month, Agency €249/month for 10 sites, excl. VAT.
Sources
- Alli AI pricing, checked 2026-10-20