Find the top 21 AI-powered keyword research tools to enhance your SEO marketing strategy.
This comprehensive guide covers their key features, advantages, disadvantages, and pricing to help you choose the perfect tool.
Keyword research tools are essential for understanding what users are searching for, driving traffic, and improving your website’s SEO rankings.
Whether you’re a content creator, a business owner, or an AI SEO specialist, finding the right keyword research tool can transform your content strategy.
List of Top AI Keyword Research Tools in 2025
Below is a detailed guide to the 21 best AI keyword research tools available at Best AI SEO.
1. Scalenut
Scalenut is an all-in-one content intelligence platform that merges AI-driven keyword research, topic clustering, and SEO writing into one streamlined tool.
It’s particularly strong in content strategy planning and keyword mapping.
Key Features:
- Topic Cluster Builder: Organically builds keyword-based content clusters around your niche.
- AI Keyword Planner: Generates keywords tied to intent, competition, and search volume.
- Cruise Mode AI Writer: One-click content generation from keyword to SEO-optimized article.
- Competitor SERP Analysis: Compares keyword usage, headings, and structure across top-ranking pages.
Pros:
- Seamless integration between keyword research and content creation.
- Excellent for long-form content planning and authority building.
- Affordable for solopreneurs and growing teams.
Cons:
- Limited backlink or off-page SEO features.
- Sometimes over-automates title/meta suggestions.
Pricing:
- 7-day free trial available.
- Paid plans start at $39/month.
Website: https://www.scalenut.com/
2. Brandwell.ai
Brandwell.ai is a lesser-known but rapidly evolving AI content and keyword platform tailored for brand-driven content marketing.
It blends SEO keyword research with audience persona alignment, making it great for brands looking to humanize their SEO efforts.
Key Features:
- Audience-Aligned Keyword Finder: Matches keywords to brand personas and tone.
- Voice-Tuned SEO Suggestions: Customizes keyword strategy based on brand voice and content goals.
- AI-Generated Briefs: Builds article outlines aligned with keyword clusters and user intent.
- Real-Time Competitor Analysis: Highlights gaps in competitor content strategies.
Pros:
- Unique focus on branding and messaging.
- Great for content marketers, not just SEOs.
- Insightful suggestions on tone and positioning.
Cons:
- Still in early growth stage — some features feel beta-level.
- Limited data export/custom reporting features.
Pricing:
- Free version with basic features.
- Paid plans start at $29/month.
Website: https://brandwell.ai/
3. Frase
Frase is best known for its content optimization features, but its often-overlooked keyword research module has quietly become one of the smartest AI-assisted keyword explorers in the market.
Key Features:
- People Also Ask Mining: Extracts real user queries from Google’s “People Also Ask” boxes.
- SERP Intent Classifier: Determines if a keyword serves informational, transactional, or navigational intent.
- Content Brief Generator: Builds keyword-driven outlines instantly.
Pros:
- Integrated seamlessly with content creation workflow.
- Ideal for bloggers and editorial teams.
- Offers competitive insights without overwhelming complexity.
Cons:
- Keyword database isn’t as deep as SEMrush or Ahrefs.
- Requires a separate add-on for full keyword data access.
Pricing:
- Starter plan at $14.99/month.
- SEO Add-on (includes keyword module) from $35/month.
Website: https://frase.io/
4. Ahrefs Keyword Explorer
Ahrefs is one of the most robust SEO tools available.
Its Keyword Explorer feature provides deep insights into keyword difficulty, traffic potential, and more, making it an ideal choice for SEO professionals looking for a comprehensive solution.
Key Features:
- Keyword Difficulty: Estimates the difficulty of ranking for a keyword based on backlink profiles.
- Click Metrics: Shows how many clicks a keyword is likely to bring.
- Competitor Analysis: Track your competitors’ keywords and backlinks.
- Extensive Database: Supports keyword research for multiple search engines (Google, YouTube, Amazon).
Pros:
- Highly accurate keyword difficulty score.
- Best for backlink and competitor analysis.
- Great for finding long-tail keywords.
Cons:
- Expensive for small businesses or freelancers.
- Limited PPC keyword insights.
Pricing:
- Starts at $129/month.
Website: https://ahrefs.com/keywords-explorer
5. Google Keyword Planner
Google Keyword Planner is a free tool offered by Google for finding keywords related to your business and seeing how a list of keywords might perform.
It is an excellent choice for those focused on paid search (Google Ads).
Key Features:
- Keyword Volume: See average monthly search volumes.
- PPC Keyword Research: Ideal for advertisers running Google Ads campaigns.
- Keyword Ideas: Get related keywords for any query.
Pros:
- Free to use.
- Direct data from Google.
- Perfect for PPC planning.
Cons:
- Limited insights for organic SEO.
- Requires a Google Ads account to use.
Pricing:
- Free, with Google ad account
Website: https://business.google.com/ad-tools/keyword-planner/
6. Junia AI
Junia AI is an up-and-coming AI content platform with a strong focus on SEO-driven keyword research and intelligent content creation.
Known for its beginner-friendly interface and AI-backed suggestions, it’s particularly attractive to bloggers and niche site owners.
Key Features:
- SEO Keyword Recommendations: Based on search volume, intent, and topic clusters.
- AI Content Assistant: Helps create outlines, FAQs, and content based on selected keywords.
- SERP Snapshot Preview: Shows how your content might rank visually against competitors.
- Long-Tail Finder: Prioritizes keywords with high specificity and low difficulty.
Pros:
- Lightweight, responsive, and great for solo users.
- Excellent FAQ and schema generation tools.
- Ideal for affiliate marketers and niche content.
Cons:
- Limited integrations with tools like Google Search Console or analytics platforms.
- Not yet built for large-scale agency use.
Pricing:
- Free plan available with usage limits.
- Premium starts at $19/month.
Website: https://www.junia.ai/
7. Keywordly
Keywordly is an advanced keyword research tool that takes traditional keyword research a step further by providing specific questions and queries people are asking about various topics.
This lets you create content that directly addresses user intent, helping you improve your SEO strategy and content relevance.
Key Features:
- Keyword Research: Gives insights into volume, difficulty, CPC, and competition.
- Question-Based Keyword Suggestions: User Intent Focus — Provides queries people are asking online around specific keywords.
- Reddit and Quora Keyword Research: Tap into the pulse of online conversations.
- Topic Clusters: Helps in building topic clusters around a core theme for better content structuring.
- AI Content Generator : Craft well-structured SEO-optimized content
Pros:
- Ideal for content creators focusing on answering specific questions.
- Helps in building a content strategy focused on solving user problems.
- Easy-to-use interface with insightful data.
Cons:
- Lacks integrations with other SEO tools (e.g., Google Analytics, SEMrush).
- Still evolving, so fewer advanced features than some competitors.
Pricing:
- Free version available with limited features.
- Paid plans start at $14/month for more in-depth keyword research and analysis.
Website: https://keywordly.ai/
8. SEMrush
SEMrush is an all-in-one marketing platform used by SEO professionals, PPC managers, and social media experts.
It offers an extensive keyword research toolkit and additional features such as competitor analysis, backlink tracking, and site audits.
Key Features:
- Keyword Magic Tool: Generates millions of related keyword ideas.
- Competitor Keyword Analysis: See what keywords your competitors are ranking for.
- Keyword Difficulty Score: Analyze how hard it is to rank for specific keywords.
- PPC Keyword Research: Includes features for paid search advertising.
Pros:
- Comprehensive SEO toolkit beyond just keyword research.
- Industry-leading competitor research.
- Regularly updated database.
Cons:
- Steep learning curve for beginners.
- Pricey compared to other tools.
Pricing:
- Starts at $139/month.
Website: https://www.semrush.com/
9. Moz Keyword Explorer
Moz is a well-known player in the SEO world, and its Keyword Explorer tool is no exception.
It offers a unique “Priority Score” that combines search volume, click-through rate, and difficulty to help you prioritize keywords.
Key Features:
- Priority Score: Combines several factors to suggest the best keywords to target.
- SERP Analysis: Shows which sites are ranking for the keywords you’re researching.
- Keyword Suggestions: Offers related keyword suggestions based on your seed keywords.
Pros:
- Easy-to-understand metrics.
- Comprehensive SERP analysis.
- Great for both beginners and experts.
Cons:
- Database isn’t as extensive as Ahrefs or SEMrush.
- Limited features in the free version.
Pricing:
- Starts at $99/month.
Website: https://moz.com/explorer
10. Ubersuggest
Ubersuggest, developed by Neil Patel, is a cost-effective keyword research tool that provides a simplified interface for finding keyword ideas, tracking SEO performance, and analyzing backlinks.
Key Features:
- Keyword Ideas: Get keyword suggestions based on Google’s autocomplete data.
- SEO Audit: Perform an SEO audit to find areas for improvement on your site.
- Backlink Data: Analyze your site’s backlink profile.
Pros:
- Affordable pricing.
- Great for beginners and small businesses.
- Free version offers valuable data.
Cons:
- Lacks the depth of analysis provided by premium tools like SEMrush.
- Keyword volume data is sometimes less accurate.
Pricing:
- Starts at $12/month.
Website: https://neilpatel.com/ubersuggest/
11. KeywordTool.io
KeywordTool is perfect for finding long-tail keywords.
It scrapes data from Google, YouTube, Bing, Amazon, and other platforms, offering a wide range of keyword suggestions based on what users are searching for.
Key Features:
- Platform Diversity: Supports multiple platforms including Google, Amazon, and YouTube.
- Long-Tail Keyword Suggestions: Best for generating long-tail keyword ideas.
- Autocomplete Data: Scrapes keyword ideas from Google autocomplete.
Pros:
- No need to create an account for basic use.
- Ideal for long-tail keyword research.
- Provides insights for multiple platforms.
Cons:
- Limited data in the free version.
- Doesn’t provide competitive metrics like keyword difficulty.
Pricing:
- Free version available.
- Paid plans start at $69/month.
Website: https://keywordtool.io/
12. SpyFu
SpyFu is a competitive keyword research tool that lets you “spy” on your competitors’ keywords, both for SEO and PPC campaigns.
It provides insights into the most profitable keywords your competitors are targeting.
Key Features:
- Competitor Keyword Research: See all the keywords your competitors are ranking for in both organic and paid searches.
- PPC Research: Track your competitors’ Google Ads strategies.
- Backlink Checker: Analyze your competitors’ backlinks to find link-building opportunities.
Pros:
- Affordable compared to other tools with competitive research.
- Great for PPC keyword analysis.
- Unlimited searches with any plan.
Cons:
- Lacks some of the detailed data provided by higher-end tools like Ahrefs.
- Interface can be overwhelming for beginners.
Pricing:
- Starts at $39/month.
Website: https://www.spyfu.com/
13. AnswerThePublic
AnswerThePublic provides keyword suggestions in the form of questions, prepositions, and comparisons, making it ideal for content creators focusing on answering specific queries.
It’s a great tool for finding long-tail keywords based on what users are asking.
Key Features:
- Question-Based Suggestions: Generates keywords based on questions people are searching for.
- Visual Keyword Maps: Provides a visual representation of keyword ideas.
- Competitor Insights: Helps with understanding what kind of content competitors are producing.
Pros:
- Perfect for generating content ideas.
- Free version provides a lot of value.
- Easy-to-use interface.
Cons:
- Limited search queries in the free version.
- Does not provide keyword difficulty or volume metrics.
Pricing:
- Free version available.
- Paid plans start at $9/month.
Website: https://answerthepublic.com/
14. Serpstat
Serpstat is an all-in-one SEO platform that includes keyword research, rank tracking, backlink analysis, and more.
It’s ideal for SEO professionals looking for a versatile SEO keyword research tool.
Key Features:
- Keyword Research: Provides keyword suggestions with search volume and difficulty.
- Competitor Analysis: Compare your site’s performance with competitors.
- Rank Tracking: Track the performance of specific keywords over time.
Pros:
- Affordable for its range of features.
- Good for both SEO and PPC research.
- Detailed competitor analysis.
Cons:
- Data accuracy can sometimes lag behind other tools like Ahrefs.
- Interface may not be as intuitive for beginners.
Pricing:
- Starts at $69/month.
Website: https://serpstat.com/
15. Long Tail Pro
Long Tail Pro specializes in finding long-tail keywords that have less competition, making it ideal for smaller websites that want to rank for specific niches.
It’s focused on giving you actionable insights into lower-competition keywords.
Key Features:
- Long-Tail Keyword Suggestions: Generates long-tail keyword ideas for niche markets.
- Keyword Competitiveness: Provides a score to gauge the competition for each keyword.
- SERP Analysis: Analyze the top 10 results for any keyword.
Pros:
- Focuses on low-competition keywords.
- Great for niche websites and bloggers.
- Affordable pricing plans.
Cons:
- Not as robust for general keyword research.
- Limited to long-tail keywords, less useful for broad SEO strategies.
Pricing:
- Starts at $37/month.
Website: https://longtail.pro/
16. KWFinder
KWFinder is a user-friendly keyword research tool that focuses on simplicity and functionality.
It provides detailed keyword metrics, including search volume, trends, and keyword difficulty, making it great for both beginners and advanced users.
Key Features:
- Keyword Difficulty Score: Easily see how difficult it will be to rank for a keyword.
- Location-Based Keyword Research: Find keywords for specific locations, ideal for local SEO.
- SERP Overview: Shows top-ranking pages for your target keywords.
Pros:
- Very user-friendly interface.
- Accurate keyword difficulty and search volume data.
- Good for local SEO.
Cons:
- Limited in-depth features compared to tools like SEMrush or Ahrefs.
- No free plan, only a trial.
Pricing:
- Starts at $29.90/month.
Website: https://mangools.com/kwfinder/
17. Majestic
Majestic is primarily known for its backlink analysis, but it also has useful features for keyword research, particularly for understanding the authority of competing pages.
It’s more suited for advanced users who want to delve deep into SEO metrics.
Key Features:
- Keyword Metrics: Provides search volume, keyword difficulty, and trust metrics.
- Backlink Data: One of the best tools for detailed backlink analysis.
- Site Explorer: Offers detailed insights into the trust and citation flow of domains.
Pros:
- Great for backlink-focused SEO strategies.
- Trust flow and citation flow metrics provide deep insights.
- Large historical database.
Cons:
- Less intuitive for beginners.
- Limited keyword research features compared to specialized tools.
Pricing:
- Starts at $49.99/month.
Website: https://majestic.com/
18. Soovle
Soovle is a free tool that pulls autocomplete suggestions from multiple search engines like Google, Amazon, Bing, Yahoo, and more, making it a good tool for brainstorming keywords across platforms.
Key Features:
- Multi-Platform Keyword Suggestions: Get keyword ideas from multiple search engines.
- Customizable: Lets you tailor searches to specific platforms.
- Export Data: Download keyword suggestions for later use.
Pros:
- Completely free to use.
- Great for brainstorming keyword ideas across various platforms.
- Simple and fast.
Cons:
- Lacks detailed metrics like search volume and difficulty.
- No in-depth analysis features.
Pricing:
- Free.
Website: https://www.seo.com/soovle/
19. Jaaxy
Jaaxy is an easy-to-use keyword research tool designed with affiliate marketers in mind.
It offers a keyword quality indicator, site ranking analysis, and a unique “Alphabet Soup” technique for generating long-tail keywords.
Key Features:
- QSR (Quoted Search Result): Shows how many sites are competing for a specific keyword.
- Alphabet Soup: Generates long-tail keywords using Google’s autocomplete feature.
- Affiliate Program Research: Helps you find affiliate programs related to your keywords.
Pros:
- Excellent for affiliate marketers.
- Provides actionable insights into keyword competition.
- Great for generating long-tail keywords.
Cons:
- Lacks some features of more advanced SEO tools.
- Not ideal for comprehensive SEO strategies.
Pricing:
- Starts at $49/month.
Website: https://www.jaaxy.com/
20. Wordtracker
Wordtracker helps you find high-performing keywords for SEO and PPC by providing insights into search volume, competition, and keyword trends.
Key Features:
- Keyword Performance Data: Get insights into search volume, competition, and trends.
- Niche Keywords: Helps you discover keywords specific to niche industries.
- Competitive Insights: Provides keyword suggestions based on competitors’ data.
Pros:
- Great for finding niche keywords.
- User-friendly interface.
- Good for both SEO and PPC.
Cons:
- Limited data compared to more advanced tools like SEMrush.
- Fewer features in the free version.
Pricing:
- Starts at $27/month.
Website: https://www.wordtracker.com/
21. Bonus: Google Trends
Google Trends is a free tool that shows you the relative popularity of keywords over time.
It’s perfect for identifying trending topics and seasonal keyword opportunities.
Key Features:
- Keyword Trends: See how keyword popularity has changed over time.
- Geographic Data: Identify where a keyword is trending most.
- Related Queries: Get suggestions for related keywords.
Pros:
- Free and easy to use.
- Great for identifying trending keywords.
- Provides real-time data.
Cons:
- No data on search volume or keyword difficulty.
- Limited to popularity trends, not a full SEO tool.
Pricing:
- Free.
Website: https://trends.google.com/trends/