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Best AI Writing Tools for SEO (2026): 6 Picks Compared on Price and Features
Affiliate disclosure: Supa may earn a commission if you sign up through links on this page, at no extra cost to you. NeuronWriter, Scalenut and Koala pay us a recurring commission for as long as you stay a customer. Frase and Writesonic pay us a recurring commission for your first 12 months. Surfer pays us a one-time commission. No company reviews or approves this page, and commissions don't decide our rankings.
"AI writing tool for SEO" covers three different kinds of product in 2026:
- Content optimizers score your draft against the pages that already rank and tell you what to add. Surfer and NeuronWriter are built around this.
- All-in-one SEO writers research, draft, optimize and publish in one place. Frase and Scalenut sit here.
- Article writers produce finished, publish-ready posts at volume. Koala is the clearest example.
A fourth group has appeared on top of all three: AI search visibility (GEO) tracking, which checks whether ChatGPT, Google's AI answers and other engines mention your brand. Writesonic now sells itself mainly as this kind of platform, and most of the other tools here have added some tracking too.
This guide compares the six tools we think are worth a look, using only what each company publishes on its own pricing and product pages.
Quick verdict
For most solo creators and small teams, Frase is the safest starting point. NeuronWriter is the cheapest optimizer. Surfer fits teams optimizing at scale. Scalenut suits multi-site owners who want clusters and audits. Koala is the volume pick for niche and affiliate publishers. Writesonic is for brands that care most about AI answers.
- #1
Best all-round for solo creators and small teams
$39/mo billed yearly ($49 monthly). 7-day trial, no card.
Visit Frase (affiliate link) - #2
Best budget content optimizer
$23/mo monthly, $230/yr. 7-day trial on Gold terms.
Visit NeuronWriter (affiliate link) - #3
Best for teams optimizing at volume
$49/mo billed yearly ($59 monthly). "Start for Free" (terms not stated).
Visit Surfer (affiliate link) - #4
Best for keyword clusters and content audits
$59/mo monthly (annual promo running). 7-day free trial.
Visit Scalenut (affiliate link) - #5
Best for publishing finished articles at volume
$25/mo. Free account, 5,000 words, no card.
Visit Koala (affiliate link) - #6
Best for brand-level AI search visibility
$79/mo billed yearly (about $99 monthly). Free trial, no card.
Visit Writesonic (affiliate link)
Comparison table
| Feature | Frase | NeuronWriter | Surfer | Scalenut | Koala | Writesonic |
|---|---|---|---|---|---|---|
| Type | All-in-one SEO writer | Content optimizer | Content optimizer | All-in-one SEO writer + audits | Article writer | AI search visibility + SEO platform |
| Entry price | $39/mo yearly, $49 monthly | $23/mo monthly, $230/yr | $49/mo yearly, $59 monthly | $59/mo monthly; $21/mo on annual promo | $25/mo monthly; annual saves 20% | $79/mo yearly, about $99 monthly |
| Top self-serve tier | Scale: $239/mo yearly | Diamond: $117/mo | Peace of Mind: $299/mo yearly | Professional: $199/mo monthly | Scale III: $2,000/mo | Growth: $399/mo yearly |
| Free start | 7-day trial, no card | 7-day trial on Gold terms | "Start for Free"; terms not stated | 7-day free trial | Free account (5,000 words, 25 credits) | Free trial, no card |
| Entry-plan volume | 10 articles | 25 documents | 120 documents | 5 articles (15 on annual promo) | 45,000 words | 15 AI articles |
| AI search tracking | Every plan: 20 / 50 / 75 prompts | Every plan: 5 to 20 questions | Standard and up: 25 / 50 / 100 prompts | Every plan: 10 / 25 / 100 prompts, weekly | Not stated | Every plan: 50 / 100 / 200 prompts, daily |
| Internal linking | Suggestions from Professional | Not stated | 1-click from Pro | From Plus | Automatic in every article; KoalaLinks from Professional | Not stated |
| CMS publishing | WordPress, Webflow, Sanity, Wix, FraseCMS | GSC, WordPress, Shopify from Gold | WordPress, Google Docs, Contentful, Zapier from Standard | Auto-publish to WordPress, Shopify from Plus | WordPress, Shopify, Webflow, Ghost, webhooks | WordPress, GSC, GA4 (plan split not clear) |
| API / MCP | MCP, CLI and API requests on every plan | API and MCP from Gold | MCP from Pro; API on Peace of Mind | Not stated | API and MCP on every paid plan | Not stated |
| Seats on entry plan | 1 | Read-only sharing (unlimited members from Gold) | 1 | Not stated | No seat limit stated; sharing within your organization allowed | 1 |
| Pricing checked | Oct 23, 2026 | Oct 23, 2026 | Oct 23, 2026 | Oct 23, 2026 | Oct 23, 2026 | Oct 23, 2026 |
Our picks
#1 Frase
Best all-round for solo creators and small teams
Pricing: Starter $39/mo yearly ($49 monthly); Professional $103/$129; Scale $239/$299; Enterprise custom. 7-day trial, no card.
Best for: Solo creators, freelancers and small teams who want one tool from research to published post, including AI search tracking.
Key features
- SEO and GEO scores on every plan
- AI Visibility on every plan with daily monitoring: ChatGPT and Google AI on Starter, Perplexity on Professional, Claude and Gemini on Scale
- Content Guard watches 10, 75 or 300 pages for Google decay
- Publishes to WordPress, Webflow, Sanity or Wix, or FraseCMS (free up to 100,000 page views/mo)
- Internal linking suggestions and content calendar from Professional
- MCP server and CLI on every plan (5,000 to 50,000 API/MCP/CLI requests/mo)
- Starter holds at its monthly limits instead of billing overages
Pros
- Lowest entry price of the all-in-one tools here, with a 7-day trial and no card
- AI search tracking, CMS publishing and SEO/GEO scoring on the cheapest plan
- No surprise bills on Starter
Cons
- Only 10 articles a month on Starter
- Internal linking suggestions start at Professional
- Site says it writes "natively in 70+ languages"; per-plan language limits aren't stated
- No separate keyword research tool listed on the pricing page
Frase calls itself "the content operating system for AI search." In practice it runs one loop on every plan: research what already ranks, draft and optimize the piece "in your voice," publish it to your CMS, audit your existing pages and catch pages that are slipping on Google.
Pricing (Oct 23, 2026)
| Plan | Yearly billing | Monthly billing | Includes |
|---|---|---|---|
| Starter | $39/mo | $49/mo | 1 seat, 1 site, 10 articles, 50 audit pages, 20 AI Visibility prompts |
| Professional | $103/mo | $129/mo | 3 seats, 5 sites, 40 articles, 250 audit pages, 50 prompts |
| Scale | $239/mo | $299/mo | 5 seats, 10 domains, 100 articles, 1,000 audit pages, 75 prompts |
| Enterprise | Custom | Custom | White-label reports, client portal, SSO/SAML, SLA |
#2 NeuronWriter
Best budget content optimizer
Pricing: Bronze $23/mo ($230/yr); Silver $45/$450; Gold $69/$690; Platinum $93/$930; Diamond $117/$1,170. 7-day trial on Gold terms; 30-day refund on first plan.
Best for: Bloggers, freelancers and small agencies who want SERP-based optimization on a budget.
Key features
- Content optimization and a content planner on every plan
- 15,000 to 75,000 AI credits a month depending on plan
- From Gold: Content Designer, New ideas, advanced/custom AI templates, unlimited team members, plagiarism checks, GSC/WordPress/Shopify, own OpenAI key, API/MCP/AI Assistant
- AI monitoring of 5 to 20 questions on every plan, plus an advanced monitoring add-on (price after login)
- 7-day free trial on Gold plan terms; refund on first plan within 30 days
Pros
- Lowest price of any content optimizer here
- Unlimited team members, integrations and API/MCP from $69/mo
- 30-day refund window on your first plan
Cons
- Small allowances on Bronze (2 projects, 25 documents)
- Light AI search tracking (5 to 20 questions) without the add-on
- Internal linking isn't stated on the pricing page
NeuronWriter describes itself as a "Content Optimization & AI Visibility Platform." Like Surfer, it scores content against search results, but it costs much less. Its top Diamond plan ($117/mo) is cheaper than Surfer's Standard plan billed monthly ($119/mo).
The pricing page shows each yearly price next to a struck-through figure equal to 12 monthly payments (for example "$276 $230 /year" on Bronze). Confirm the final price at checkout, since the page doesn't say whether VAT is included.
#3 Surfer
Best for teams optimizing at volume
Pricing: Discovery $49/mo yearly ($59 monthly); Standard $99/$119; Pro $182/$219; Peace of Mind $299/$359; AI Search Analytics standalone $82/$95; Enterprise custom.
Best for: Content teams and agencies whose main job is optimizing lots of new and existing content.
Key features
- AI Writing Assistant (Surfy), AI Detector & Humanizer and Content Score on every writing plan
- Keyword Research from Standard; Topical Map, Content Ideas & Coverage Gap and Cannibalization Report from Pro; SERP Analyzer on Peace of Mind
- 1-click content optimization from Standard; 1-click internal linking from Pro
- Integrations (WordPress, Google Docs, Contentful, Zapier) from Standard; MCP from Pro; API only on Peace of Mind
- Surfer says it "works with all languages"
- Yearly billing saves "up to 17%," charged upfront; annual credits reset yearly
Pros
- Far more documents on the entry plan than the other optimizers here
- Deep planning tools (Topical Map, cannibalization) on Pro
- Detailed AI visibility reports, including mention gaps and brand sentiment, from Pro
Cons
- No AI search tracking on Discovery
- API access only on the $299/mo (yearly) plan
- "Start for Free" terms aren't spelled out on the pricing page
Surfer is the best-known content optimizer, and its 2026 pricing page is built around "AI search." Its Content Editor gives live guidelines that Surfer says are "real-time, competition-based," based on "over 500 web and AI signals." Surfer calls its Content Score "the gold standard in the industry," which is the company's own claim.
| Plan | Yearly | Monthly | Documents | AI search tracking | Seats |
|---|---|---|---|---|---|
| Discovery | $49/mo | $59/mo | 120 | None | 1 |
| Standard | $99/mo | $119/mo | 360 | 25 prompts, ChatGPT, weekly | 3 |
| Pro | $182/mo | $219/mo | 360 | 50 prompts, all models, daily | 5 |
| Peace of Mind | $299/mo | $359/mo | Unlimited* | 100 prompts, daily | 10 |
#4 Scalenut
Best for keyword clusters and content audits
Pricing: Starter $59/mo ($21/mo annual promo); Plus $89/$31; Professional $199/$70; VIP Service custom. 7-day free trial. Promo: 65% off + 3X limits, non-refundable.
Best for: Growing teams and multi-site owners who want clusters, audits and internal linking in one tool.
Key features
- Create ready-to-rank GEO articles, optimize existing articles and build keyword clusters on every plan
- GEO content audit of 200 pages/mo on Plus and 1,000 on Professional (tripled on annual promo)
- Internal linking, topic gaps, On-page Pro, unlimited tones of voice and auto-publishing to WordPress and Shopify from Plus
- Advanced keyword planner, cannibalization analysis and dedicated CSM on Professional
- AI images: 25, 100 or 300 a month
Pros
- AI search tracking, clustering and optimization on every plan
- Unlimited team members and workspaces on Professional
- Very low annual price while the promo lasts
Cons
- Only 5 new articles a month on Starter billed monthly
- Promo deals are non-refundable, and renewal pricing after the first year isn't clearly stated
- AI search tracking refreshes weekly, not daily
- API access isn't stated on the pricing page
Scalenut now pitches itself around AI visibility and "GEO content." Every plan combines AI search tracking with article creation, optimization of existing articles and keyword clustering, and Plus adds site-wide audits and internal linking.
Dated offer (checked Oct 23, 2026): Scalenut is running a "Black Friday Early Access" deal: 65% off and 3X limits on annual plans only, billed upfront. Its FAQ says these deals are non-refundable and have limited slots, and the page doesn't give an end date. Monthly plans stay at $59, $89 and $199. Check the live price before you buy.
#5 Koala
Best for publishing finished articles at volume
Pricing: Free $0 (5,000 words); Starter $25/mo (45,000 words); Professional $49; Boost $99; Growth to Scale III $179–$2,000. Annual saves 20%.
Best for: Bloggers, niche-site builders and affiliate publishers who need many complete, internally linked articles.
Key features
- Automatic SEO optimization against ranking pages, plus real-time factual data
- Automatic internal links in every article; KoalaLinks covers up to 50 sites from Professional
- One-click publishing to WordPress, Shopify, Webflow and Ghost, plus webhooks
- Amazon roundups and single-product reviews from live Amazon data
- Search Console and Analytics dashboard from Professional; Content Calendar Autopilot on Boost
- Keyword, competitor, backlink and SERP research through MCP, paid with platform credits
Pros
- Free account with no card, and the lowest paid entry price for a full article writer
- Unused words and credits roll over on monthly plans, up to 3 months' allowance
- Widest list of CMS integrations here
Cons
- AI search visibility tracking isn't listed on the pricing page
- The draft editor with an SEO score starts at Professional
- Premium models use up your word allowance faster
Koala (KoalaWriter) is an article writer, not an optimizer. It writes full articles that Koala says cover "the entities and terms" shared by the pages ranking for your keyword, places internal links automatically and publishes in one click.
Annual billing saves 20%; the page doesn't print annual prices. Word counts are based on Koala's default model; Koala's footnote says some premium models count words at 2x and one at 3x.
#6 Writesonic
Best for brand-level AI search visibility
Pricing: Starter $79/mo yearly (about $99 monthly); Basic $199/~$249; Growth $399/~$499; Enterprise custom. Free trial, no card; 7-day no-questions-asked refund.
Best for: Marketing teams and agencies whose priority is getting a brand mentioned in AI answers.
Key features
- Daily tracking across ChatGPT, Gemini and Google AI Overviews on self-serve plans; Enterprise covers "all 9 AI platforms"
- AI Article Writer, SEO & content AI agent, content optimization and 1/5/10 brand voices
- Site audits on every plan; ads monitoring; sentiment analysis on Growth; Action Center trial on Growth
- Integrations with Google Search Console, WordPress, GA4 and Looker Studio (plan split not clear)
- 7-day "no-questions-asked" refund
Pros
- Most tracked prompts on an entry plan of the tools here (50, refreshed daily)
- Site audits and SEO articles alongside tracking
- Free trial with no credit card
Cons
- Starts at $79/mo billed yearly, well above a basic SEO writer
- Self-serve plans track three AI platforms; the rest are Enterprise-only
- Agentic workflows are limited to trial runs below Enterprise
Writesonic used to be a budget AI copywriter. In 2026 its pricing page sells it as an AI search visibility platform: "Find which prompts recommend your competitors instead of you. Fix it with AI agents." It still writes SEO articles, but that's now a bundled feature, not the main product.
Monthly prices are worked out from the "Save $X/year" figures on the annual view, so confirm them on the monthly toggle.
How we chose
We haven't run our hands-on tests on these tools yet, so this ranking is provisional. For now we've compared them on what each company publishes:
- Price to start and to scale, using each official pricing page as of Oct 23, 2026.
- SEO depth: live optimization guidelines, content scoring, keyword research and clustering, audits and internal linking.
- AI search (GEO) features: which engines are tracked, how many prompts and how often.
- Publishing and integrations: CMS connections, API and MCP access.
- Fair limits: whether the plan holds at its limit or bills overages, refund terms, and how clearly limits are explained.
Where a pricing page doesn't say something, we write "not stated" rather than guess. Read our full methodology.
Also considered
- Jasper focuses on brand-governed marketing content and now advertises GEO features. Pro is $59 per seat a month billed yearly ($69 monthly) for one seat, and multi-seat teams need the custom Business plan. Jasper doesn't run an open affiliate program, so we don't link to it. See Jasper alternatives.
- General chatbots such as ChatGPT can draft content, and ChatGPT has a free plan, but they don't score drafts against search results or track AI visibility on their own.
About volume units
The volume units differ (articles, documents, words), so don't compare that row number for number. A Surfer "document" is something you create or optimize in its editor, a Frase or Scalenut "article" is a generated piece, and Koala meters words.
Who should choose what
- You run one site alone and care about AI search: Frase. It covers research to publishing from $39/mo yearly.
- You want the cheapest optimizer, or need unlimited team members on a budget: NeuronWriter.
- Your team optimizes hundreds of documents a month: Surfer.
- You manage several domains and want clusters, audits and internal links: Scalenut.
- You run niche or affiliate sites and need volume: Koala, paired with an optimizer if you want scoring.
- You're a brand that mainly wants to show up in ChatGPT and Google AI answers: Writesonic.
FAQs
What is the best AI writing tool for SEO?
It depends on the job. Based on published plans, Frase is the most complete all-rounder for solo creators and small teams, NeuronWriter is the cheapest optimizer, and Surfer gives teams the most optimization volume. We'll confirm this order after hands-on testing.
What is the cheapest AI writing tool for SEO?
NeuronWriter, at $23/mo billed monthly or $230 a year, as of Oct 23, 2026. Scalenut's annual promo works out to $21/mo, but it's billed yearly upfront, non-refundable and time-limited. Koala starts at $25/mo, but it's an article writer rather than an optimizer. See our guide to affordable AI writing tools.
Is there a free AI writing tool for SEO?
Koala gives new accounts 5,000 free words and 25 credits with no card. Frase, NeuronWriter and Scalenut offer 7-day trials, and Frase's needs no card. Writesonic offers a free trial with no card. Surfer shows a "Start for Free" button, but its pricing page doesn't say what that includes.
Which tools track visibility in ChatGPT and Google AI answers?
Writesonic (50 to 200 prompts daily), Frase (20 to 75 prompts daily, on every plan), Scalenut (10 to 100 prompts weekly, on every plan), NeuronWriter (5 to 20 questions, on every plan) and Surfer (from Standard, or its standalone AI Search Analytics plan). Koala's pricing page doesn't list AI visibility tracking.
Do I need an optimizer and an article writer?
Not necessarily. Frase and Scalenut both draft and optimize. People who use Koala for volume sometimes add an optimizer like NeuronWriter or Surfer to score drafts, but that means paying for two tools.
Which is best for agencies?
Look at Surfer Peace of Mind (10 seats, unlimited* brand workspaces, API), Frase Scale (10 domains, 5 seats, exportable client reports), Scalenut Professional (unlimited members and workspaces) or NeuronWriter Diamond (50 projects, unlimited team members). See best AI writing tools for content teams and agencies.
Will AI-written content rank on Google?
None of these companies promises rankings. Frase says outright that what it "will not do is promise you a ranking or a citation inside a 7-day window." Treat every tool here as a way to research, draft and optimize faster. You still need to edit and fact-check what it produces.
Do these tools work in languages other than English?
Surfer says it "works with all languages," and Frase says it writes "natively in 70+ languages." The other SEO tools' pricing pages don't list supported languages, so check with the vendor before you buy if you publish in other languages.
Final verdict
For most solo creators and small teams, Frase is the safest starting point: research, drafting, publishing, SEO/GEO scores and AI visibility tracking from $39/mo billed yearly, with a 7-day trial and no card. If you mainly want to optimize content against the search results and price matters most, NeuronWriter costs less than every other optimizer here. Teams that optimize content at scale should look at Surfer, and multi-site owners who want clusters and audits should try Scalenut. Koala is the volume pick for niche and affiliate publishers, and Writesonic is for brands that care most about AI answers.
Notes
- Unlimited as marked by Surfer on its pricing page; Surfer does not define the limits on that page.
- Ranking order is provisional based only on official pricing/product pages, not on Supa hands-on testing.
Sources
- Frase pricing (checked Oct 23, 2026)
- NeuronWriter pricing (checked Oct 23, 2026)
- Surfer pricing (checked Oct 23, 2026)
- Scalenut pricing (checked Oct 23, 2026)
- Koala pricing (checked Oct 23, 2026)
- Writesonic pricing (checked Oct 23, 2026)
How we research these pages: How we test.