The best AI SEO tools in 2026

By Udayan Ambwani, Co-founder & CTO · 5 Oct 2026

An AI SEO tool puts AI to work on everyday search tasks: drafting and optimising pages, answering questions as an assistant, and checking how AI answers mention you, on top of keyword, link and audit data. We list seven in the order our published scoring rules put them, with Veritas, our product, scored by the same rules.

The short answer

Decide whether you want AI to write pages, work beside your research or watch AI answers, then check that the data beneath it is deep enough for your sites.

VeritasOursFor drafts cited to your own documents, plus site audits, from $16.$16/mo
SemrushFor AI drafting and prompt tracking on top of over 27.3 billion keywords.$139/mo
SE RankingFor an AI writer, and daily tracking of 100 AI prompts on its $129 Core plan.$129/mo
SurferFor writing to a live SEO and AI Search score, from $59 a month.$59/mo, or $49/mo billed yearly
FraseFor SERP research, AI drafting and publishing for one writer from $49 a month.$49/mo

How to choose an AI SEO tool

Start by naming the job you want AI to do. On this list it does three different things: it writes and optimises pages (Surfer, Frase, Writesonic and Veritas, ours), it assists inside a full suite through writers and agents (Semrush, Ahrefs and SE Ranking), and it reports how AI answers mention your brand. Most buyers need one of the first two, and tracking is worth adding only at the right price.

Then check the data the AI works from, because a fluent draft aimed at the wrong keyword still misses. Semrush holds over 27.3 billion keywords and Ahrefs 35 trillion live backlinks, and SE Ranking pairs 5.5 billion keywords with daily checks of 2,000 on Core. Surfer and Writesonic describe no keyword database and Frase begins from SERP research, so all three sit beside a suite rather than replacing one.

Next, look at what the writer draws on. Surfer AI inserts source links, to your site and the wider web, during generation, Frase’s agent writes with brand context, and Writesonic reworks existing pages with FAQ blocks and comparison tables. Veritas writes from documents you upload and cites every knowledge-based claim; the others do not describe citations back to your own material, which matters when someone has to check each claim before it goes live.

Where AI sits in the plan changes the real price. Ahrefs sells AI Content Helper in a Content Kit from $99 a month on top of Lite at $129, and Semrush starts prompt tracking on Starter at $199 rather than on its $139 SEO plan. SE Ranking’s $129 Core plan already includes 100 daily prompts, and Frase tracks AI answers on every plan from $49.

Finally, count seats before comparing totals. Each extra user costs $45 to $100 a month on Semrush and $40 to $80 on Ahrefs, and extra SE Ranking seats start at $16, whereas Veritas includes three users on Growth and five on Business. Frase, Writesonic and SE Ranking all offer trials without a card, so you can test the AI on your own site first.

All 7 tools at a glance

Paid plans start at $16 on Veritas and $49 on Frase, while the three full suites, Ahrefs, SE Ranking and Semrush, begin at $129 to $139 a month.

Tool	Best for	From	AI search score
SE Ranking	Teams wanting an AI writer and daily AI tracking inside a mid-priced full suite	$129/mo	82
Frase	Writers who want AI to carry a page from SERP research to publishing	$49/mo	76
Semrush	Teams that want AI drafting, prompt tracking and a very large keyword database in one account	$139/mo	73
Writesonic	One brand that wants AI to rewrite pages and pitch sites citing competitors	$99/mo, or $79/mo billed yearly	70
VeritasOurs	Teams that want SEO research, audits and drafts cited to their own documents in one place	$16/mo	66
Surfer	Content teams who want AI help and a live SEO and AI Search score while writing	$59/mo, or $49/mo billed yearly	63
Ahrefs	Link-led SEO teams adding an AI agent and AI tracking to backlink research	$129/mo	59

From is the cheapest paid plan. The AI search score rates AI visibility and content features by our published rules; it is not a verdict on SEO depth.

SEO research and cited drafts, together

Veritas finds the keywords, audits the site and writes each page from your own documents, citing every knowledge-based claim. Plans start at $16 a month.

Start your 7-day free trial See pricing

The SEO toolkit, tool by tool

What each tool gives you for classic SEO, as its own pages describe it. A tick is included, a dashed circle is included with a limit the cell names, and a dash means the vendor’s pages do not describe it.

Only Semrush and SE Ranking fill every column; Ahrefs sells its writing as an add-on, and Surfer, Frase and Writesonic leave keyword or ranking data to another tool.

Tool	Keyword data	Backlinks	Rank tracking	Site audit	AI writing
SE Ranking	5.5 billion keywords	Backlink checker	Daily, 2,000 keywords on Core	Website audit	AI writer
Frase	SERP research into briefs, not a keyword database	Link gaps with drafted outreach	Ranking decay alerts (Content Guard)	Site Audit	AI agent, 10 to 100 articles a month
Semrush	Over 27.3 billion keywords	Backlink Analysis	Daily, 500 keywords on SEO	Technical Site Audit	Content Creation
Writesonic	Not described	Outreach to sites citing competitors	AI answers only	Technical audit from AI bot visits	Rewrites pages for GEO
VeritasOurs	Volume, CPC and difficulty from DataForSEO	Backlink monitoring on Business	Position history on every plan	Graded for Google and AI crawlers	Drafts cited to your own documents
Surfer	Topical Map, not a keyword database	Not described	Not described	Content Audit, not a technical crawl	Content Editor score and Surfer AI
Ahrefs	28.7 billion filtered keywords	35 trillion live backlinks	Weekly, 750 keywords on Lite	170+ SEO issues	Content Kit add-on, from $99/mo

AI answer tracking

Frase, SE Ranking, Ahrefs, Writesonic and Veritas track AI answers on their cheapest paid plan; Surfer needs a higher plan, and Semrush lists no prompt allowance below Starter. On the first tracking plan, SE Ranking checks 100 prompts a day on five engines and Surfer 50 a day on five, while Semrush Starter checks daily on five, Claude among them. Frase refreshes daily with ChatGPT and “Google AI”, Ahrefs Lite allows 5 prompts on one platform, Veritas Starter covers 5 prompts on four engines every two weeks with on-demand checks, and Writesonic publishes neither prompts nor refresh.

For one marketer tracking 50 prompts, Frase costs $588 a year, Surfer $1,140, SE Ranking $1,548 and Semrush $2,388, while Ahrefs needs Enterprise at $17,988 and Veritas has no self-serve plan that reaches 50 (Business tracks 25). A team of five sharing 100 prompts pays $2,244 on Frase, $2,316 on SE Ranking, $4,308 on Surfer and $7,428 on Semrush. Veritas’s way in is 5 prompts on Starter at $192 a year; 10 prompts on Growth comes to $936.

On Veritas, the plan that tracks AI answers also includes the audits, keyword research and cited drafting.Start a 7-day trial See pricing

Engine by engine, and what tracking costs a yearWhich engines each tool covers on its tracking plan, and the yearly cost for four team sizes

Which engines each tool covers

On the cheapest plan that tracks AI answers. Most vendors list more engines than that plan includes, so this is what you get at the price shown, not the brochure maximum.

Tool and plan	ChatGPT	Claude	Gemini	Perplexity	AI Overviews	AI Mode	Copilot
SE Ranking Core	Included	Not on this plan	Included	Included	Included	Included	Not on this plan
Frase Starter	Included	Not on this plan	Not on this plan	Not on this plan	unclear	unclear	Not on this plan
Semrush Starter	Included	Included	Included	Included	Included	unclear	unclear
Writesonic Starter	Included	Not on this plan	Included	Not on this plan	Included	Not on this plan	Not on this plan
VeritasOurs Starter	Included	Not on this plan	Included	Included	Included	Not on this plan	Not on this plan
Surfer AI Search Analytics	Included	Not on this plan	Included	Included	Included	Included	Not on this plan
Ahrefs Lite	you choose	you choose	you choose	you choose	you choose	you choose	you choose

A tick is included. Add-on means an extra monthly fee. You choose means the plan lets you pick a limited number of platforms from this list. Unclear means the vendor’s wording does not say.

The plan behind each row, and what changes on higher plans, are on each tool’s review: SE Ranking, Semrush, Ahrefs and Veritas.

What AI answer tracking costs a year

These setups price one thing: tracking how AI assistants answer about you, for a given number of prompts and people, over twelve months. They are not the cost of the SEO toolkit, which is in the table above. Where no published plan fits, the note says why instead of guessing.

Tool	Getting started1 seat, 10 tracked prompts, 1 brand	One marketer, one brand1 seat, 50 tracked prompts, 1 brand	Team of five, one brand5 seats, 100 tracked prompts, 1 brand	Agency, three brands10 seats, 300 tracked prompts, 3 brands
Frase	$588lowest	$588lowest	$2,244lowest	$5,328
VeritasOurs	$936	No published fit¹	No published fit¹	No published fit¹
Surfer	$1,140	$1,140	$4,308	No published fit¹
SE Ranking	$1,548	$1,548	$2,316	$4,344lowest
Semrush	$2,388	$2,388	$7,428	No published fit¹
Ahrefs	$2,988	$17,988	No published fit¹	No published fit¹
Writesonic	No published plan fits any of these setups²

1No published plan tracks the prompts this setup needs; larger volumes are arranged with the vendor.
2The vendor does not publish how many prompts each plan tracks, so we cannot say which plan meets this setup.

Bars share one scale across the whole table, so cost growth shows as well as rank. A figure far above the rest is marked off scale.

The plan, seats and add-ons behind every figure are worked through on each tool’s review: SE Ranking, Semrush, Ahrefs and Veritas.

Each tool in brief

SE Ranking

Best for teams wanting an AI writer and daily AI tracking inside a mid-priced full suite.

Full SE Ranking review

SE Ranking is the suite here that includes the most AI answer tracking in its entry price. Core, at $129 a month, includes daily tracking of 100 prompts on five engines: AI Overviews, AI Mode, ChatGPT, Perplexity and Gemini. SE Ranking also offers an AI writer, and MCP access that lets AI assistants query its data. The classic work is covered as well: 2,000 keywords checked daily across 10 projects, a 5.5 billion keyword database, a website audit, a backlink checker and local SEO for three locations.

What you give up: its AI writer is not described as citing your own documents, and no plan tracks Claude or Copilot. Core comes with one manager seat, added seats cost from $16 a month each, and its keyword database is smaller than those of Semrush or Ahrefs.

Frase

Best for writers who want AI to carry a page from SERP research to publishing.

Frase uses AI along the whole route from research to a live page. SERP research becomes a brief, an agent drafts with your brand in context, a GEO pass tunes the piece for AI citation, and the result goes to WordPress, Webflow, Sanity, Wix or FraseCMS. Beside that sit a site audit, a backlink tool that spots missing links and writes the outreach, and Content Guard alerts on decaying rankings, and every plan, from Starter at $49 a month, tracks AI answers daily.

What you give up: Frase starts from SERP research rather than a keyword database, and Content Guard is the nearest it comes to rank tracking. Starter generates 10 articles a month and tracks only ChatGPT and “Google AI”. Frase also does not describe citing claims to your own documents.

Semrush

Best for teams that want AI drafting, prompt tracking and a very large keyword database in one account.

Full Semrush review

Semrush spreads AI across a very large SEO suite. Content Creation generates full-length articles from a brief, the Technical Site Audit looks for problems affecting both search and AI visibility, and from Starter at $199 a month Prompt Research and AI Brand Sentiment sit beside daily prompt tracking on ChatGPT, Perplexity, Gemini, Claude and AI Overviews. Underneath sit Backlink Analysis, a keyword base of over 27.3 billion, and daily rank checks on 500 keywords across five websites on the $139 SEO plan.

What you give up: prompt tracking needs Starter, since the $139 plan names no prompt allowance, and each extra user adds $45 to $100 a month depending on the plan. Semrush does not describe Content Creation citing documents you supply, and the API is kept for the $549 Advanced plan.

Writesonic

Best for one brand that wants AI to rewrite pages and pitch sites citing competitors.

Writesonic applies AI to what happens after a gap is found. Its Action Center ranks opportunities by the visibility and citations each is likely to gain, an agent rewrites existing pages for AI answers with FAQ blocks and comparison tables, and a technical audit checks robots.txt, schema, indexing and broken pages using data from AI bot visits. It connects to Google Analytics, Search Console, WordPress and Looker Studio, offers an API and MCP, and Starter costs $99 a month, or $79 billed yearly.

Where it falls short: keyword research is not described and its tracking covers AI answers only, so it sits beside an SEO suite rather than replacing one. Every self-serve tier watches just ChatGPT, Gemini and Google AI Overviews, with no published prompt allowance or refresh rate, and Starter allows one user and one project.

VeritasOurs

Best for teams that want SEO research, audits and drafts cited to their own documents in one place.

Our write-up of Veritas

Start a 7-day trial See pricing

Veritas is ours, and its AI handles writing differently: it drafts from a knowledge graph built out of your uploaded documents, gives each knowledge-based claim a numbered citation and leaves out anything it cannot trace. The SEO work around that draft comes on every plan, from Starter at $16 a month for one user: keyword research and keyword gap, an audit that grades the site for both Google and AI crawlers, a content score out of 100 that updates live, and WordPress publishing. Starter also tracks ChatGPT, Perplexity, Gemini and Google AI Overviews on 5 prompts; Growth, at $78 for three users, tracks 10.

What you give up: keyword and backlink research covers the domains you work on rather than a market-wide database, and backlink monitoring arrives only on Business at $125. Tracking runs fortnightly, with extra checks available on demand, and there is no public API or MCP server.

Surfer

Best for content teams who want AI help and a live SEO and AI Search score while writing.

Surfer is where AI works inside the editor. The Content Editor grades a draft in real time on one unified score split into SEO and AI Search, Auto-Optimize applies the fixes, and Surfer AI inserts internal and external source links while it writes rather than afterwards. Since August 2026 its recommendations respond to AI Tracker findings, and Discovery, the entry plan, costs $59 a month ($49 billed yearly) for one seat and 120 documents.

Where it falls short: Surfer is not an SEO suite, and its pages describe nothing on backlinks, rankings or a technical crawl. Discovery has no AI tracking; the cheapest plan with it is AI Search Analytics at $95 for 50 daily prompts. No trial is listed, and its source links point to web pages rather than files you upload.

Ahrefs

Best for link-led SEO teams adding an AI agent and AI tracking to backlink research.

Full Ahrefs review

Ahrefs brings AI to a toolkit whose real strength is its data: 35 trillion live backlinks and a history going back more than a decade, 28.7 billion filtered keywords and a Site Audit that checks over 170 issues. Ask Ahrefs, an in-app AI agent launched in May 2026, is free during its beta, API and MCP access start on Lite at $129 a month, and Brand Radar watches seven AI surfaces, including Claude and Copilot, with custom prompts refreshed daily.

Where it falls short: AI writing is outside the base plans, because AI Content Helper, which grades drafts against top-ranking pages, is sold separately in the Content Kit, which starts at $99 a month. Lite covers 5 tracked prompts on one platform, rankings update weekly on every plan, and Ahrefs offers no trial.

What would change our verdict

Any tool here adding per-claim citations to documents you supply, which would change how AI writing is weighed on this list.
Ahrefs moving AI Content Helper into its base plans, or putting a price on Ask Ahrefs once its beta ends.
A change to any entry price, or to the plan on which AI answer tracking starts, since both decide where each tool sits.

Questions people ask

What is an AI SEO tool?

It is software that applies AI to search work: writing and optimising pages, answering questions through an assistant or agent, or checking how AI answers mention a brand. The useful ones pair that with keyword, backlink, ranking and audit data, because AI suggestions are only as sound as the data behind them.

Which AI SEO tool is cheapest?

Of these seven, Veritas has the lowest paid entry, Starter at $16 a month, which includes keyword research, a site audit, cited drafting and AI tracking for 5 prompts. Frase starts at $49 with daily AI tracking on every plan, and Surfer’s Discovery plan costs $59, or $49 billed yearly.

Do AI SEO tools replace an SEO suite?

Only some of them are suites. Semrush, Ahrefs and SE Ranking combine AI features with keyword databases, backlink data, rank tracking and audits, while Surfer and Writesonic do not describe rank tracking in search results and Frase works from SERP research. A writing-first tool is usually paired with a suite.

Can an AI SEO tool write content that cites its sources?

Most tools here draft, but they differ on sourcing. Surfer AI adds links to your own site and to web sources while drafting, and Veritas attaches a numbered citation to every knowledge-based claim from documents you upload. Semrush, SE Ranking, Frase and Writesonic say nothing about tying claims to files you provide.

Each tool’s full review

Every feature, price, pro and con for each tool, each fact linked to the vendor page it came from, is on that tool’s own review page.

SE Ranking reviewSEO suite with AI visibility
Semrush reviewSEO and AI visibility suite
Veritas, in our own wordsCited content, SEO and AI visibility
Ahrefs reviewSEO suite with AI visibility

What we compared on5 questions that separate these tools

What the AI does. Whether AI writes and optimises pages, answers questions as an assistant or agent, or only reports on AI answers, and which of those your team lacks.
The data underneath. How deep the keyword, backlink, rank tracking and audit data is, since AI suggestions are only as sound as the data they work from.
What drafts are built from. Whether drafts come from the open web, brand context or documents you supply, and whether claims are cited back to a source.
Where AI sits in the pricing. Which plan includes the writer and the AI tracking, and whether either is sold as an add-on to the entry price.
Cost for your team. The monthly bill once extra seats are counted, and whether a trial without a card lets you test on your own site.

What happens after a tool finds a gapWhich tools only report, which suggest fixes, and which write them

What happens after a tool finds a gap

This decides more than the engine list does. A tracker tells you where you are missing; whether it also writes the fix decides how much work stays with your team.

Drafts and publishes content: Frase, Veritas (ours), Writesonic
Drafts content: Ahrefs, SE Ranking, Semrush, Surfer

Placed by what each product does on any plan, as its own pages describe it. The capability may need a higher plan than the cheapest one; each full review says which. Not described means we found no description either way.

How the scores are calculatedThe arithmetic behind each score

Tool	Weighted score	Criteria scored	Strongest criterion
SE Ranking	82	7 of 8	Refresh frequency
Frase	76	7 of 8	Refresh frequency
Semrush	73	7 of 8	Refresh frequency
Writesonic	70	5 of 8	What happens after a gap
Veritas Our product	66	8 of 8	What happens after a gap
Surfer	63	8 of 8	Refresh frequency
Ahrefs	59	7 of 8	Refresh frequency

Eight rules, each applied to the published facts in the reviews and weighted to a total out of 100. The rules and weights are set out in our methodology.

How we researched this pageMethod and the update log

How we researched this page

Every fact about another tool comes from that vendor’s own pages, or from a press report where we say so, listed under Sources with the date we read them. Where a vendor does not describe something, we say so rather than guess.

The scores and cost figures on this page are calculated, not assigned. Our full methodology sets out every rule, what each criterion is worth, and where our evidence runs out.

Disclosure. Veritas is our product. It appears on this page because it competes in this category, and we have tried to state its limits as plainly as anyone else’s. If anything here is wrong or out of date, write to support@getveritas.io and we will correct it and note the change in the log.

Update log

5 October 2026Published.

Sources

The pages behind this comparison, most recently read 29 September 2026. Each tool’s review dates its own sources.

SE Ranking: Academy · AI Visibility Tracker · Free Tools · Homepage · Pricing
Frase: Homepage · Pricing · Security
Semrush: Academy · Adobe Completes Semrush Acquisition · Features · Keyword Magic Tool · Local · My Reports · Pricing · Pricing (SEO AI Search) · Security · User Management
Writesonic: Homepage (writesonic.com) · Homepage (writesonic.trust.site) · Pricing
Surfer: AI Instructions · Homepage · Pricing · Release Notes · Trust Center · Whats new at surfer june 2026…
Ahrefs: Academy · AI Content Helper · Brand Radar · Free · Homepage (ahrefs.com) · Homepage (trust.ahrefs.com) · Is there any way to brand… · Keywords Explorer · New features february march 2026 · New Features May 2026 · Pricing · Product announcement ahrefs adds youtube and… · Rank Tracker · SEO MCP · Site Audit · Site Explorer

The same jobs in Veritas, our product

Keyword research Site audit Backlinks Local SEO tool Competitor keyword analysis Plans and pricing

How this page was made. Veritas is our product. Every fact about another tool is checked against that vendor’s own pages, and scores and costs are calculated by our published rules.

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