What it does
Keyword Tool gathers long-tail suggestions from autocomplete across several search and marketplace platforms. Free discovery works without an account; Pro adds search metrics, historical trends and programmatic access.
Keyword Tool starts with autocomplete suggestions. Enter a seed phrase, choose a platform and market, then inspect the returned wording. The free suggestion tool works without an account, making it useful for finding questions before paying for search metrics.
Pro adds search volume, cost-per-click, competition and trend data. You can sort and filter the results, then export a selected list. Bulk Search Volume handles up to 1,000 pasted keywords at a time, which is useful when you already have a list from another source.
The daily keyword allowance is shared across the website, API and connected AI clients. Historical data also varies by plan.
| Plan | Historical data |
|---|---|
| Starter | 12 months |
| Growth | 24 months |
| Scale or Agency | 48 months |
| A large API job can therefore use capacity that would otherwise be available for manual research the same day. |
Strengths
- Separates discovery by platform and localization.
- Free keyword discovery does not require an account.
Watch out for
- Pro website, API and AI-client usage share one daily keyword allowance.
Best for
- Content and search teams collecting platform-specific query wording
Sources
- Keyword Tool (Oct 27, 2026)
- Keyword Tool Pro (Oct 27, 2026)