Keyword Research: 12 Tools Compared (2026)
Surface high-potential terms and low-competition long-tail opportunities to inform content strategy
This curated list compares 12 keyword research tools — including Google Keyword Planner, Keyword Tool, KeySearch LSI Keyword — by features, free plans, pricing and API support, so you can shortlist the right stack in minutes.
Google Keyword Planner
Google Ads’ official free tool with accurate search volumes and bid suggestions from the most authoritative source
Keyword Tool
Aggregates search suggestions across Google, YouTube, Amazon, Play Store and more
KeySearch LSI Keyword
Enter any keyword to generate semantically related LSI keywords and broaden content coverage
WordStream
Discover and prioritize the best target keywords in one place, for both SEO and PPC
Ahrefs' Keywords Generator
Ahrefs’ free keyword generator for quick keyword ideas and basic volume data
Semrush Keyword Magic Tool
Semrush’s flagship keyword tool — find the best target terms among millions of suggestions
Serp Miner
Mines long-tail terms from Google autocomplete and bulk-checks exact search volumes
kwrds.ai
An AI-powered keyword and question discovery tool that digs into user intent and related questions
AnswerThePublic
Visualizes the 5W1H questions users ask most — a classic long-tail keyword tool
Keywordideas.xyz
Get keyword suggestions from real Google data using a URL or seed keyword
Exploding Topics
Uses big data to detect breakout terms with a minimal UI — spot the next hot topic early
Google Trends
Google’s official trends tool — view search interest over time with region and date filters