Ahrefs
Ahrefs is the backlink index most SEO teams treat as the reference, and the rest of the suite — keywords, rank tracking, audits — is strong enough that it usually replaces two or three cheaper tools. The entry prices mislead: Starter at $29 is a taster, and Lite at $129 is a single seat with credit limits, so a small agency lands at Standard plus extra users before it feels unconstrained. Buy it for the data; price it on your real seat count.
Pros
- Backlink index built on Ahrefs' own crawler, with trillions of links and years of history
- Keyword research, rank tracking, site audit and AI-answer visibility in one subscription
- API and MCP access included from the Lite plan, not sold as a separate product
- Free tier for your own verified sites and a $29 Starter for light use
Cons
- Lite caps usage at 1,000 credits per user and six months of history
- Every plan includes one user; additional seats are a per-month surcharge
- Enterprise at $1,499 requires an annual commitment
- Brand Radar AI and prompt-check packages are paid add-ons on top of the plan