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Best AI tools for SEO keyword research (2026)

Find keywords and build content briefs that rank.

The problem

There are plenty of AI tools for SEO keyword research, but only a handful are worth setting up. Here are the ones we rate, and how to choose between free and paid plans.

Best free option

Helium 10 logo Helium 10

Amazon-seller toolkit with AI for research, listings, and keywords

Best paid option

Jasper logo Jasper

AI marketing copilot for content and brand-consistent copy

Best for agencies

Jasper logo Jasper

AI marketing copilot for content and brand-consistent copy

Best for beginners

Perplexity AI logo Perplexity AI

AI answer engine with cited sources

Compare the top tools

# Tool Pricing Starts at Best for Rating
1 Jasper logo Jasper Paid USD 39 Marketing teams, Agencies, E... ★ 4.4 Visit →
2 Helium 10 logo Helium 10 Freemium USD 129 E-commerce, Small business,... ★ 4.5 Visit →
3 Perplexity AI logo Perplexity AI Freemium USD 20 Startups, Marketing teams, S... ★ 4.6 Visit →
4 Frase logo Frase Paid USD 49 Agencies, Marketing teams, F... ★ 4.4 Visit →
5 Surfer SEO logo Surfer SEO Paid USD 99 Agencies, Marketing teams, F... ★ 4.6 Visit →
6 Writesonic logo Writesonic Freemium Marketing teams, Agencies, C... ★ 4.3 Visit →

Recommended tools

Jasper logo

AI Writing Tools

4.4

AI marketing copilot for content and brand-consistent copy

Paid Free trial Affiliate
Helium 10 logo

AI Ecommerce Tools

4.5

Amazon-seller toolkit with AI for research, listings, and keywords

Freemium Affiliate
Perplexity AI logo

AI Research Tools

4.6

AI answer engine with cited sources

Freemium Featured
Frase logo

AI SEO Tools

4.4

AI content research, writing, and SEO optimization

Paid Free trial Affiliate
Surfer SEO logo

AI SEO Tools

4.6

Data-driven content optimization for higher rankings

Paid Affiliate
Writesonic logo

AI Writing Tools

4.3

AI writing and SEO content platform for marketers

Freemium Free trial Affiliate

How to choose

For seo keyword research, prioritise tools that solve your specific workflow end-to-end rather than the one with the longest feature list. Start with a free or freemium option to validate fit, then upgrade once you know which capabilities you rely on daily.

Frequently asked questions

Helium 10 is a strong free option (free plan with paid upgrades). Helium 10 is an all-in-one toolkit for Amazon sellers, covering product research, keyword analysis, listing optimization, and PPC. Its AI helps write listing copy, suggest keywords, and read customer review patterns.
Paid plans in this list start from around USD 20 per month, and several options offer free or freemium tiers.
Our current top picks are Jasper, Helium 10 and Perplexity AI. The best choice depends on your budget, team size and the specific tasks you need to automate — use the comparison table above to weigh pricing and features side by side.