Best of
Best SEO tools: 2 options compared
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| Tool | Best for | Free option | Starting price |
|---|---|---|---|
| 1. Semrush Our pick | marketers who want SEO plus ads, content and local toolkits | Free plan; 7-day trial | From $139/mo |
| Ahrefs | link-building and backlink-focused specialists | Free tools available | See official pricing |
How we chose
We looked at data coverage, toolkits, free options and published pricing. Facts come from each vendor’s own public pages; where a price or limit was not shown we say so instead of guessing.
The options in detail
Semrush
Best for: marketers who want SEO plus ads, content and local toolkits.
- 28B keywords and 43T backlinks, per the official site
- Free plan with 1 demo project
- Plans cap tracked keywords and websites
Watch out: Extra users cost from $45/mo.
Read the Semrush reviewAhrefs
Best for: link-building and backlink-focused specialists.
- 41.9B keywords tracked, per its site
- Site Explorer, Rank Tracker, Site Audit and Content Explorer
- Brand Radar for AI visibility
Watch out: Pricing was not shown on the page we read.
Official siteVerdict
If the points above match your needs, start with Semrush and use its free option or trial to confirm. Choose another option only when a specific limit blocks you.
Go deeper: semrush vs ahrefs · Semrush review · Semrush alternatives
Prices and limits can change; always confirm on the official sites. Last verified: 2026-10-13
