Harbor writes the full SEO article from a keyword. Surfer grades the one you already wrote. If your bottleneck is producing content, pick Harbor; if it's polishing existing pages, Surfer earns its keep.
What each tool actually does, side by side.
| Feature | Harbor | Surfer |
|---|---|---|
AI article generation | ||
Content optimizer / scoring | ||
Competitor sitemap research | ||
Link building & outreach | ||
Keyword research | ||
SERP analyzer | ||
Content audit (existing URLs) | ||
Chrome extension | ||
Starting price / mopublic list prices | $99 | $89 |
Article volume | Token-based | Limited by tier |
Surfer optimizes what exists. Harbor makes what doesn't.
Harbor produces the full SERP-researched article. Surfer gives you a content score and a guideline panel — you (or a writer) still have to type the words.
Harbor crawls your competitors' entire sitemap to surface the clusters they rank for. Surfer operates a keyword and SERP at a time.
Harbor's Linker finds guest-post targets and outreach prospects. Surfer has no link building — you'd pair it with a separate tool.
Harbor's token model lets high-volume teams publish dozens of articles without hitting a seat-based article cap.
Every tool has a home-field advantage. These are Surfer's.
Surfer's audit tool is genuinely strong for diagnosing why a published page isn't ranking. If your job is revive-don't-replace, it earns its spot.
Surfer's extension drops the optimizer right into Google Docs. For teams that won't leave Docs, that friction-free workflow matters.
If your SEO process is "hit 75+ on the content score," Surfer is built around that number. Harbor optimizes against the SERP without a single vanity metric.
Generate one full SEO article end-to-end. You'll know in 10 minutes.