Are there free AI seo tools?

Yes — 6 of the tools here offer a free tier, including Diib, KoalaWriter, SEOWriting.ai. Check each one's limits before relying on it.

Does cheapest mean worst?

Not necessarily — but the trade-offs are real, which is why each tool below lists what it's NOT good for. The lowest price often means tighter limits or fewer features, so match the plan to your actual volume.

Cheapest AI SEO Tools (2026)

The cheapest AI seo tool is Diib at about $7.99/mo — Small business owners who want simple, automated SEO health monitoring and competitor benchmarking. For $0, Diib, KoalaWriter, SEOWriting.ai have free tiers. Below are the 15 lowest-priced options, ranked by real starting price, each with the catch shown.

All SEO tools (by quality) →Best free SEO tools →

#1
Diib
Free tier
Automated SEO health monitoring with growth benchmarks
Best for: Small business owners who want simple, automated SEO health monitoring and competitor benchmarking
Not for: Advanced SEO professionals needing detailed keyword research, content optimization, or backlink prospecting
Free tier available; paid plan from ~$7.99–$29.99/mo (verify on site)
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#2
KoalaWriter
Free tier
One-click AI SEO writer with live SERP data
Best for: Bloggers and niche-site owners who want fast, low-cost AI article drafts informed by current SERP data.
Not for: Enterprise content teams needing deep SEO auditing, rank tracking, or brief collaboration features.
Plans reportedly from ~$9/mo (Essentials, ~15k words) up to ~$350/mo (Elite). Free words on signup without a card.
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#3
SEOWriting.ai
Free tier
One-click SEO article generation with auto-publishing
Best for: Bloggers and affiliate site owners who want fast, one-click article generation with direct WordPress publishing
Not for: Teams requiring deep SERP analysis, advanced content briefs, or collaborative editing workflows
Free tier available with limited credits; paid plans from ~$14–$49/mo (verify on site)
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#4
Content at Scale
Paid — from $15/mo
AI blog writer for long-form SEO content at volume
Best for: Content agencies and niche-site operators who need large volumes of long-form SEO articles efficiently.
Not for: Teams wanting a human-editorial-first workflow, or tools focused on keyword research, rank tracking, or audits.
Per-post pricing model: plans reportedly from ~$31/post (Solo) down to ~$15/post (Agency, high volume); trial article available; no free tier.
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#5
AISEO
Free tier
AI article writer with paraphrasing and SEO scoring
Best for: Budget-conscious bloggers and affiliate marketers who need fast AI article drafts with basic SEO guidance
Not for: Enterprise content teams needing deep SERP analysis, competitor tracking, or workflow collaboration
Free tier available; paid plans from ~$15–$49/mo (verify on site)
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#6
NeuralText
Paid — from $19/mo
AI copywriting and SERP-based content clustering
Best for: Content strategists who want keyword clustering and SERP-based briefs combined with AI copywriting templates
Not for: Users needing full rank tracking, backlink analysis, or large-scale technical SEO auditing
Plans from ~$19–$49/mo (verify current pricing on site)
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#7
Page Optimizer Pro
Paid — from $22/mo
On-page SEO recommendations from SERP correlation
Best for: SEO specialists who want precise, correlation-based on-page optimization guidance
Not for: Users looking for an AI writing assistant or automated content creation
Plans from ~$22–$47/mo (verify current pricing on site)
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#8
NeuronWriter
Paid — from $23/mo
Affordable NLP-driven content editor for SERP-based optimization
Best for: Budget-minded freelancers and affiliate marketers who want SERP-driven optimization without premium pricing.
Not for: Enterprise teams needing polished integrations, support SLAs, and large-scale content governance.
From ~$23/mo (Bronze); higher tiers add more analyses and projects; annual discounts
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#9
Outranking
Paid — from $25/mo
AI SEO writer with SERP-driven briefs and internal linking
Best for: Content managers and SEO writers who want an end-to-end workflow from SERP brief to optimized draft.
Not for: Teams needing high-volume programmatic content generation or standalone keyword research without writing.
Plans reportedly from ~$25/mo (Starter) to ~$159/mo (SEO Wizard); custom enterprise. Trial available; no permanent free tier.
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#10
Ubersuggest
Free tier
Budget SEO tool with keyword research and audits
Best for: Budget-conscious bloggers and small business owners who want an all-in-one SEO toolkit without recurring fees.
Not for: SEO pros or agencies needing high-volume crawls, enterprise backlink data, or programmatic workflows.
Monthly plans reportedly from ~$29/mo; one-time lifetime purchase from ~$290. 7-day trial; limited free daily searches.
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#11
GrowthBar
Paid — from $29/mo
AI blog writing and keyword research for content teams
Best for: Small teams and solo bloggers who want keyword research and AI writing in one affordable tool
Not for: Enterprise SEO teams needing deep technical audits or large-scale rank tracking
Paid plans from ~$29–$79/mo (pricing may have changed)
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#12
SEOpital
Paid — from $29/mo
AI content briefs built around NLP and entities
Best for: Multilingual SEO teams who need NLP-based content briefs and entity-driven optimization
Not for: Users who primarily need backlink analysis or rank tracking dashboards
Paid plans from ~$29–$49/mo (verify current pricing on site)
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#13
Mangools
Paid — from $29.9/mo
Beginner-friendly SEO suite (KWFinder, SERPWatcher)
Best for: Bloggers, freelancers, and small businesses wanting a clean, low-learning-curve keyword and rank-tracking tool.
Not for: Large agencies needing deep technical audits, content-gap analysis, or high crawl limits.
Plans reportedly from ~$29.90/mo (Basic) to ~$89.90/mo (Agency); ~35% off annual. Limited free account; no full free tier.
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#14
Scalenut
Paid — from $39/mo
AI content marketing platform from keyword cluster to optimized draft
Best for: Content marketers who want an end-to-end workflow from keyword clusters to optimized AI-written drafts.
Not for: Teams needing the deepest backlink or technical-SEO data, where dedicated suites are stronger.
From ~$39/mo (Essential); Growth and Pro tiers higher; annual discounts
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#15
INK Editor
Free tier
AI writing and SEO co-pilot with real-time scoring
Best for: Content creators who want simultaneous AI writing assistance and live SEO scoring in one editor
Not for: Teams needing deep backlink analysis or technical site auditing
Free tier available; paid plans from ~$39–$55/mo (verify on site)
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Frequently asked questions

What is the cheapest AI seo tool?: Diib starts at about $7.99/mo — Small business owners who want simple, automated SEO health monitoring and competitor benchmarking If you want $0, Diib, KoalaWriter, SEOWriting.ai offer a free tier.
Are there free AI seo tools?: Yes — 6 of the tools here offer a free tier, including Diib, KoalaWriter, SEOWriting.ai. Check each one's limits before relying on it.
Does cheapest mean worst?: Not necessarily — but the trade-offs are real, which is why each tool below lists what it's NOT good for. The lowest price often means tighter limits or fewer features, so match the plan to your actual volume.