SEO Blog Writer: SEO Blog Post Writer and AI SEO Blog Writer Tools Compared by Price
An SEO blog writer tool costs $25 to $169 a month, and the useful question is how many posts end up live on your site, not how many drafts it produces. This page prices the current AI SEO blog writers side by side, with what each one publishes and where it stops.
Every price was read from the vendor's own pricing page in September 2026. Where a vendor runs a promo, the list price is shown.
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See pricing starting at $99/mo
$25
Cheapest entry plan (Koala Starter, 45,000 words)
$0.99
Lowest cost per article (BlogSEO Advanced, 100 a month)
$3.30
The SEO Agent per published article (30 for $99)
$99
Rankable Starter: 4 articles plus 60 site fixes
What an SEO blog writer costs, and what it actually publishes
An SEO blog writer is software that researches a keyword, writes a blog post built to rank for it, and in the better tools publishes that post to your site. Current US list prices: Koala Starter $25 a month (45,000 words), BlogSEO Basic $39 (25 articles), Frase Starter $49 (10 articles), Arvow Solo $69, Writesonic Starter $79 billed yearly (15 articles), The SEO Agent $99 (30 articles) and Rankable Starter $99 (4 articles plus up to 60 fixes to the rest of the site).
The spread is wide because the tools sell different things. BlogSEO and Koala sell volume: BlogSEO Advanced works out to $0.99 an article at 100 articles a month. Frase sells writing plus optimization scoring. The SEO Agent sells 30 published posts a month on one site. If all you need is a lot of blog posts, those are the cheapest paths, and we say so plainly on our own SEO content cost per article breakdown.
Rankable is the expensive option per post on purpose. It is an AI SEO agent that runs the SEO of your website: it audits the site every week, applies fixes to titles, meta descriptions, internal links, schema, image alt text and the sitemap, and researches, writes and publishes articles into the gaps the audit finds. Per article that is $24.75 on Starter. What you are buying is the post plus a site that is fit to rank it. It is not a rank tracker and not a backlink index, and it publishes to WordPress and to sites served over SFTP only. If you want the writer on its own, see the AI blog writer page.
One more thing worth knowing before you buy volume. Google's guidance is that it rewards helpful content however it is produced, and its scaled content abuse policy targets pages made in bulk mainly to rank. So 100 thin posts a month can cost you more than they earn. Four researched posts that fill real gaps, linked into pages that already rank, usually do more for a small site.
SEO blog writer tools compared by price
Entry and next tiers from each vendor's own pricing page, monthly list price unless noted.
Swipe to see all columns →
| Tool and plan | Price | What the plan includes | Publishes to |
|---|---|---|---|
| Koala Starter | $25 a month | 45,000 words | WordPress, Shopify, Webflow, Ghost |
| Koala Professional | $49 a month | Starter plus MCP server | WordPress, Shopify, Webflow, Ghost |
| BlogSEO Basic | $39 a month | 25 articles, 1 user | Notion |
| BlogSEO Advanced | $99 a month | 100 articles, 2 users | WordPress, Webflow, Ghost, Notion |
| Frase Starter | $49 a month, $39 yearly | 10 articles, 1 site | WordPress, Webflow, Sanity, Wix |
| Frase Professional | $129 a month, $103 yearly | 40 articles, 5 sites | WordPress, Webflow, Sanity, Wix |
| Arvow Solo | $69 a month, $39 yearly | 1,000 credits, 1 website | Listed integrations |
| Writesonic Starter | $79 a month, billed yearly | 15 articles, 1 user | WordPress integration |
| The SEO Agent | $99 a month | 30 articles, 1 site | Publishes to your blog |
| Rankable Starter | $99 a month, $49.50 yearly | 4 articles plus 60 fixes | WordPress and SFTP sites |
| Rankable Growth | $249 a month | 12 articles, 3 sites | WordPress and SFTP sites |
BlogSEO Max is $169 for 300 articles. Koala Boost is $99. Arvow Business is $169 a month or $69 yearly for 5 websites. Several vendors run promos below list price.
What separates an SEO blog writer from a text generator
Six things to check before you compare prices.
Posts that go live, not drafts
A draft you still format, link and upload costs an hour of someone's week. Check whether the plan publishes to your CMS or only exports text.
Research before writing
The post has to target a query people search and your site can win. Rankable picks topics from your own audit and Search Console gaps, not from a prompt.
Internal links into your pages
A new post with no links from your existing pages is slow to get crawled. Rankable adds links both ways as part of the same weekly run.
The rest of the site fixed
Weak titles, missing meta descriptions and broken schema hold new posts back. Writer tools leave those alone; an SEO agent applies up to 60 fixes on Starter.
Metering you can plan around
Articles (BlogSEO, Frase, The SEO Agent), words (Koala) or credits (Arvow). Convert every plan to a cost per published post before you compare.
Undo and a record of changes
Every change Rankable makes to your site is logged in a weekly report and can be undone in one click, so nothing goes live that you cannot reverse.
How Rankable writes and publishes your SEO blog posts
Four steps from audit to live posts.
Run the free site audit
Enter your website above. Every account gets a free audit and action plan showing the fixes and article topics the agent would start with.
Connect WordPress or SFTP
Install the Rankable Connector plugin with an Application Password, or give SFTP access for a file-served site. Our team helps with setup during onboarding.
The agent writes and publishes
Each run researches gaps, writes articles in your site's layout or as WordPress posts, publishes them and links them into related pages.
Read the weekly report
See every post published and every fix applied, with Search Console numbers next to them. Undo anything with one click.
Who should buy which SEO blog writer
A business owner with no time to blog
Starter at $99 a month publishes 4 researched posts to one site and fixes the pages around them, with no writer to manage.
A one-person marketing team
Growth at $249 covers up to three sites, 12 articles a month and daily monitoring, with alerts when a page drops out of the index.
An agency writing for clients
Agency at $599 covers 15 sites and 40 articles a month, with a weekly report for every client website and API access.
A content lead replacing freelancers
If your freelancer bill is mostly for posts that sit unpublished or unlinked, an agent that publishes and links is the cheaper fix.
A site that needs volume, not fixes
If you want 50 or more posts a month and your site is technically clean, BlogSEO or Koala will cost less than Rankable. Use them.
A Shopify or Webflow store
Rankable publishes to WordPress and SFTP sites only. Koala publishes to Shopify and Webflow, and Frase to Webflow, Sanity and Wix.
Rankable against SEO blog writer tools, honestly
Writer tools are cheaper per post. Rankable publishes fewer posts and fixes the site around them. Here is where each one wins.
Swipe to see all columns →
| Rankable | SEO blog writer tools | |
|---|---|---|
| Entry price | $99 a month, $49.50 yearly | $25 to $99 a month |
| Cost per article | $24.75 on Starter | $0.99 to $5.27 |
| Publishes the post | Yes, WordPress and SFTP | Most, CMS varies |
| Picks topics from your data | Yes, audit and Search Console | Mostly from your keyword |
| Fixes existing pages | Yes, up to 60 on Starter | No |
| Internal links both ways | Yes, in the same run | Into the new post only |
| Undo any change | One click, logged | Delete the post |
| Rank tracking | No | No |
| Shopify and Webflow | No | Koala, Frase |
SEO blog writer: questions buyers ask
How much does an SEO blog writer cost?
AI SEO blog writer tools cost $25 to $169 a month at list price: Koala from $25, BlogSEO from $39, Frase from $49, Arvow from $69, Writesonic from $79 billed yearly, and The SEO Agent and Rankable at $99. Per published article that ranges from $0.99 (BlogSEO Advanced) to $24.75 (Rankable Starter, which also fixes the rest of the site).
What is the best AI for writing SEO blogs?
The best AI for writing SEO blogs is the one that matches the job you need done. For the most posts per dollar, BlogSEO or Koala. For writing with optimization scoring, Frase. For posts that are researched from your own site data, published and linked into your pages while the rest of the site gets fixed, an AI SEO agent such as Rankable. The longer comparison is in our best AI SEO blog writer guide.
Can AI write SEO blog posts that rank?
Yes. Google's published guidance is that it rewards helpful, original content regardless of whether AI helped produce it. What gets pages demoted is content made at scale mainly to rank, which its scaled content abuse policy targets. AI posts rank when they answer a query people search, add something the current results lack, and are linked from pages Google already trusts.
Does Google penalize AI-written blog content?
No, not for being AI-written. Google judges the page, not the tool. It does act against thin pages published in bulk, whoever wrote them. That is why the number of posts a plan allows matters less than whether each post targets a real gap on your site.
Is an SEO blog writer tool cheaper than hiring a writer?
Usually, per post. Divide the plan price by the posts it actually publishes and set that next to your writer's per-post rate: $3.30 on The SEO Agent, $4.90 on Frase Starter, $24.75 on Rankable Starter with the site fixes included. The trade is judgment and first-hand expertise, so the best setups have a person review what the tool publishes, especially on topics where experience shows.
Which SEO blog writer publishes directly to WordPress?
BlogSEO (Advanced and up), Koala, Frase and Rankable all publish to WordPress. Rankable does it through the Rankable Connector plugin and an Application Password, and also publishes to file-served sites over SFTP. It does not publish to Shopify, Webflow, Ghost or Wix.
How many blog posts a month do I need for SEO?
Fewer than most plans sell. For a small business site, four researched posts a month that fill real keyword gaps and link into your service pages is a solid pace. We cover the numbers in how many blog posts per month for SEO.
Is there a free trial of Rankable?
There is no trial of the autopilot. Every account gets a free site audit and action plan, so you can see what the agent would fix and write before you pay. Plans start at $99 a month and cancel anytime; see pricing.
Get researched posts published and your site fixed for $99 a month
Rankable audits your site, publishes 4 articles and applies up to 60 fixes a month on Starter. Growth covers three sites for $249. Yearly billing is half price. Free site audit with every account, cancel anytime.
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