Best AI Blog Writers for SEO, Compared

Frase is the best AI blog writer for SEO for most small teams: research, drafting and publishing in one tool from $49 a month. Koala is the lowest-cost option at volume, with cited research. Okara's Writer Agent fits teams that want articles planned from their own site data and published to the widest range of platforms.

We compared 9 tools on five criteria, using each vendor's own pricing page, documentation and feature lists, checked on October 1, 2026. We didn't run the same brief through every tool, so nothing below is a test result. Where a vendor doesn't say how something works, we say so. Okara makes one of the tools on this list, and it's placed by the same criteria as the others.

How did we compare these AI blog writers?

We scored each tool on five things that decide whether an AI blog writer actually saves an SEO team time, using only what the vendor publishes. Every price was read from the vendor's own pricing page on October 1, 2026.

Price per article ignores length and quality, so treat it as a rough floor rather than a verdict. The ranking below follows how many criteria each tool covers in its public documentation, then price. If you're after keyword research or rank tracking rather than writing, our comparison of AI SEO tools for research, content and AI search covers that category.

Best AI blog writers at a glance

How do the tools compare on the five criteria?

Frase, Koala and Okara cover the most criteria, but each has a gap. Koala doesn't state its review workflow, Okara doesn't document citation handling, and Frase only says it keeps research attached to posts. The cheapest tools per article cover the fewest criteria.

Koala's figure assumes 2,000-word articles on its default model. Okara's is $249 divided by its 30-article monthly minimum.

The 9 best AI blog writers for SEO

1. Frase

Frase positions itself as an SEO and GEO content agent. It studies what already ranks for your topic, drafts and optimizes the article, publishes it and then watches it for decline.

Best for: small teams that want one AI SEO content generator covering research through to publishing.

What stands out: Frase publishes to WordPress, Webflow, Sanity or Wix, or to its own hosted FraseCMS, which is free up to 100,000 page views a month. Its Content Guard feature watches published pages for Google rank and traffic decay, writes a fix and republishes once you approve. The agent can publish on its own on every plan, but only when you switch that on. Starter also tracks 50 prompts in ChatGPT and Google AI.

Limits: Starter covers 1 seat, 1 site and 10 articles a month. The content calendar and internal linking suggestions start on Professional. Frase doesn't describe how it cites sources, beyond saying FraseCMS keeps each post connected to the research behind it.

Pricing: Frase's pricing page lists Starter at $49/month month to month or $39/month billed yearly, as of October 1, 2026. Professional is $129 or $103 (40 articles, 3 seats), and Scale is $299 or $239 (100 articles). The 7-day free trial needs no card and is capped at 5 articles.

Verdict: the most complete package for the price, with sensible defaults on approval.

2. Koala

Koala AI's KoalaWriter turns a keyword into a full article. It analyzes the pages ranking for that keyword and covers the entities and terms they share, then adds images and internal links.

Best for: publishers who need many articles a month at a low cost.

What stands out: every paid plan publishes to WordPress, Shopify, Webflow and Ghost, with webhooks for Zapier and Make. From the $49 Professional plan, Deep Research gathers sources for the topic before writing, "with citations when you want them," according to the pricing page. The same plan adds a Search Console and Analytics dashboard, and Koala's SEO agent plans content from that data.

Limits: Koala sells words, not articles, and its premium models count words at 2x or 3x the default rate. The pricing page doesn't say whether scheduled or autopilot posts wait for review. Its testimonials and Amazon affiliate features are aimed at niche-site publishers, so B2B teams should check the output style on the free allowance first.

Pricing: Koala's pricing page lists Starter at $25/month (45,000 words), Professional at $49 (100,000 words) and Boost at $99 (250,000 words and Content Calendar Autopilot), as of October 1, 2026. Annual billing saves 20%. New accounts get 5,000 free words and 25 credits without a card.

Verdict: the best value if you publish at volume and are willing to set up your own review step.

3. Okara Writer Agent

Okara's Writer Agent is part of Okara's AI CMO. Instead of starting from a keyword you type in, it drafts articles from a monthly content strategy built from your website and your data.

Best for: teams that want topics chosen for them from their own data, the choice of reviewing drafts or auto-publishing, and the blog tied to their wider marketing.

What stands out: it publishes to GitHub, Sanity, WordPress, Webflow, Framer, Wix and HubSpot. No other tool here lists GitHub or HubSpot, which matters for teams on a Git-based site or HubSpot's CMS. You can edit and approve each draft, or let it publish on its own. The same plan includes the SEO Agent, which finds content opportunities, and agents for GEO, Reddit, LinkedIn and X.

Limits: the Writer Agent is only on the AI CMO Pro plan at $249/month, and there's no writing-only plan. It produces a minimum of 30 articles a month, which is more than a team planning four careful posts needs. Okara doesn't publicly document how drafts cite sources, so plan to check facts yourself.

Pricing: Okara's pricing page lists AI CMO Pro at $249/month billed monthly, or $2,490/year billed annually ($208/month equivalent), as of October 1, 2026. The $129 Lite plan doesn't include the Writer Agent.

Verdict: the widest publishing reach here, but expensive if articles are all you need.

4. Outrank

Outrank is built to run without you. It builds a 30-day keyword plan for your site and creates and publishes one article a day from it.

Best for: founders who want a steady flow of posts with almost no involvement.

What stands out: Outrank's pricing page lists integrations with WordPress, Webflow, Shopify, Wix, Framer, Notion, Ghost and a custom webhook, plus unlimited users. Keyword research includes live search volume and difficulty data. Its FAQ says each article is first saved as a draft in your CMS, so you can review it before it goes live.

Limits: professional editors who review and fact-check every article are a separate $1,399/month service. Outrank's plan also includes automated backlink building, where you earn link credits by hosting links in your own articles. Weigh that against Google's spam policies, which list "using automated programs or services to create links to your site" as an example of link spam.

Pricing: Outrank's pricing page lists one plan at $99/month or $999/year for 30 articles a month, as of October 1, 2026. Moving to 60 articles costs $85/month more, and 90 articles costs $160/month more.

Verdict: the most hands-off option, if you're comfortable with its backlink model.

5. SEOwriting.ai

SEOwriting.ai is a bulk article generator. It pulls real-time SERP data, scores the draft and pushes it to WordPress or Shopify.

Best for: WordPress or Shopify sites that want the lowest price per article.

What stands out: the $19 Starter plan includes up to 50 articles, real-time SERP data, a content score, 1 brand voice, bulk generation, a WordPress integration and a Shopify app. That works out to $0.38 per article. A free plan includes 3 articles without payment details.

Limits: internal and external linking start on the $79 Professional plan. The only publishing integrations listed are WordPress and Shopify. The pricing page doesn't describe fact-checking or a review step beyond its AI editor.

Pricing: SEOwriting.ai's pricing page lists Starter at $19/month billed monthly or $14/month billed yearly, as of October 1, 2026. Professional is $79 or $59 (up to 250 articles), and Professional Plus 1 is $159 or $119 (up to 500 articles).

Verdict: the cheapest way to fill a WordPress blog, with most of the quality control left to you.

6. Surfer

Surfer is an SEO content editor first. It scores a draft against the pages that rank and gives live guidelines, with an AI writing assistant called Surfy.

Best for: teams whose writers draft the articles and want them optimized before publishing.

What stands out: Surfer's Content Score and SERP-based guidelines are its core, and it adds Topical Map, Content Audit and AI visibility tracking. Its AI Tracker page says you can "write or generate missing AI-ready articles with the Content Editor." The pricing page lists integrations with WordPress, Google Docs, Contentful and Zapier.

Limits: plans count "documents to create or optimize," not finished and published articles, so Surfer isn't an autopilot. Which plans include the integrations isn't clear from the comparison table.

Pricing: Surfer's pricing page lists Discovery at $59/month billed monthly or $49/month billed yearly (120 documents), as of October 1, 2026. Standard is $119 or $99 (360 documents), and Pro is $219 or $182.

Verdict: the best tool here for improving a draft, not for producing a blog on its own.

7. Writesonic

Writesonic started as an AI writer and now sells itself as an AI search visibility and SEO platform. AI articles and site audits come bundled into its visibility plans.

Best for: teams whose main goal is tracking visibility in ChatGPT, Gemini and Google AI Overviews, with some articles on the side.

What stands out: its data sources include Google Keyword Planner and Google SERPs, and it integrates with Google Search Console and WordPress. Starter tracks 50 prompts daily and runs 10 site audits a month.

Limits: Starter includes 15 articles a month for 1 user, so most of the price pays for visibility tracking. For articles alone, that's $6.60 each on monthly billing. Our roundup of Writesonic alternatives covers tools that lean more toward writing.

Pricing: Writesonic's pricing page lists Starter at $99/month billed monthly or $79/month billed annually, as of October 1, 2026. Basic is $249 or $199 (25 articles), and Growth is $499 or $399 (50 articles).

Verdict: worth it if you want AI visibility tracking anyway; expensive as a blog writer alone.

8. Jasper

Jasper is a marketing AI platform built around a Canvas editor, marketing agents and brand controls. It's strong on keeping content on-brand across a team.

Best for: marketing teams that need brand voice and knowledge controls more than SEO data.

What stands out: the Pro plan includes 2 Brand Voices, 5 Knowledge assets and 3 Audiences. Its integrations marketplace names Webflow, Google Docs and Slack.

Limits: the Pro plan card lists no keyword or SERP data, and GEO and deep research agents are on the custom-priced Business plan. The pricing page doesn't describe publishing straight to a CMS. For more SEO-focused options, see our guide to Jasper AI alternatives.

Pricing: Jasper's pricing page lists Pro at $69 per seat per month billed monthly or $59 billed yearly, with a 7-day free trial, as of October 1, 2026. Business is custom-priced.

Verdict: good for brand consistency, weak as an SEO blog writer out of the box.

9. ChatGPT or Claude

General AI assistants can draft a blog post from a good prompt. Claude's pricing page lists web search and ChatGPT's lists deep research, and both offer Projects where you can keep a style guide.

Best for: founders writing a few posts a month on a very small budget.

What stands out: they're the cheapest option, and both have free plans. You control every step, which also means every step is yours to do.

Limits: neither has keyword data, SERP scoring or CMS publishing built in. You bring the topic research, structure, fact-checking and formatting. We cover where that trade-off breaks down in Okara vs DIY ChatGPT or Claude.

Pricing: ChatGPT's pricing page lists Plus at $20/month and Go at $8/month, as of October 1, 2026. Claude's pricing page lists Pro at $20/month billed monthly or $17/month billed annually.

Verdict: fine for 2–4 posts a month if you already know SEO; slow beyond that.

Which AI blog writer should you choose?

Pick by the job you need done, not by feature count. If you want the whole loop for the least money, start with Frase; if you need volume, Koala; if you want topics planned from your own data, Okara.

What a blog writer costs is only part of the bill. Our breakdown of content marketing costs, AI versus traditional puts these prices next to freelancer and agency rates.

Can AI-written blog posts rank on Google?

Yes, if they're genuinely useful. Google says that appropriate use of AI or automation is not against its guidelines, and that "using AI doesn't give content any special gains. It's just content."

The risk is volume without value. Google's spam policies define scaled content abuse as "when many pages are generated for the primary purpose of manipulating search rankings and not helping users." One listed example is "using generative AI tools or other similar tools to generate many pages without adding value for users."

That matters for this category, because bulk generation and daily autopilot are selling points for several of these tools. A tool that can publish 50 articles a month doesn't make 50 articles a month a good plan. Use the volume for topics where you have something to add, and review what goes out.

What should you check before publishing an AI draft?

Check the facts, the answer and the angle. An AI draft can be well structured and still carry a wrong number, a vague opening or nothing the current top results don't already say.

This is where human approval earns its place. Tools that hold drafts for review, or save them as CMS drafts, make this checklist part of the workflow instead of an afterthought. More playbooks for small teams are in our AI SEO guides for founders.

Where does Okara fit?

Okara is an AI CMO: marketing agents that analyze your website, build a strategy from your data, then draft and publish the work for your approval. For blog writing, three agents work together:

• The SEO Agent finds SEO recommendations, technical SEO issues and content opportunities.
• The Writer Agent turns the monthly content strategy into a minimum of 30 articles a month and publishes them to GitHub, Sanity, WordPress, Webflow, Framer, Wix or HubSpot.
• The GEO Agent tracks up to 15 AI search prompts in ChatGPT, Google AI Overviews and Google AI Mode.

You can review each article before it goes live, or let the Writer Agent publish on its own. Okara connects to Google Search Console and GA4.

The Free plan ($0) covers a full website analysis and a 30-day marketing strategy, but no articles. AI CMO Lite is $129/month and includes the SEO and GEO agents. AI CMO Pro is $249/month billed monthly, or $2,490/year billed annually ($208/month equivalent), and adds the Writer Agent. See Okara's plans for everything in each.

If articles are all you need, Frase or Koala will cost less. Okara makes more sense when you also want the strategy behind the articles and the other channels in one place. Lovie, a financial-infrastructure startup, used Okara's SEO, Writer, GEO, X and LinkedIn agents and saw a 56% improvement in average search position, a 73% increase in click-through rate and a 20% increase in US traffic.

FAQ

Can ChatGPT write SEO content?

It can write a solid draft if you give it the keyword, the structure and the facts. What it lacks is built-in keyword data, SERP scoring and CMS publishing, so the SEO research and checking are still your job. Dedicated AI blog writers add those steps, which is what you're paying the difference for.

Is there a free AI blog writer?

Several tools let you start free. As of October 1, 2026, SEOwriting.ai's free plan includes 3 articles, Koala gives new accounts 5,000 words, and Frase's 7-day trial covers up to 5 articles. ChatGPT and Claude both have free plans, and Okara's free plan covers analysis and strategy but not articles.

Do AI blog writers publish directly to WordPress?

Most dedicated ones do. Frase, Koala, Okara, Outrank, SEOwriting.ai and Writesonic all list WordPress, and Surfer lists a WordPress integration. Check whether posts go out as drafts or live, because that decides who gets the final look.

What's the difference between an AI blog writer and an SEO content optimizer?

An AI blog writer produces the article, often from a keyword or a plan. An SEO content optimizer, like Surfer, scores a draft against the pages that already rank and tells you what to add. Many teams use a writer for the first draft and an optimizer or an editor for the final pass.

Should you disclose that a blog post was written with AI?

Google says AI or automation disclosures are useful where someone might reasonably wonder "How was this created?" It also advises against listing AI as the author. A named human editor who has checked the post is the clearer signal for readers.

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Sources

• Frase, "Plans and pricing" (checked October 1, 2026): https://www.frase.io/pricing
• Koala AI, "Pricing" (checked October 1, 2026): https://koala.sh/pricing
• Okara, "Pricing" (checked October 1, 2026): https://okara.ai/pricing
• Okara, "Lovie customer story": https://okara.ai/customers/lovie
• Outrank, "Pricing" (checked October 1, 2026): https://www.outrank.so/pricing
• SEOwriting.ai, "Pricing" (checked October 1, 2026): https://seowriting.ai/pricing
• Surfer, "Pricing & Plans" (checked October 1, 2026): https://surferseo.com/pricing/
• Surfer, "AI Tracker" (checked October 1, 2026): https://surferseo.com/ai/
• Writesonic, "Plans & Pricing" (checked October 1, 2026): https://writesonic.com/pricing
• Jasper, "Pricing" (checked October 1, 2026): https://www.jasper.ai/pricing
• OpenAI, "ChatGPT Pricing" (checked October 1, 2026): https://chatgpt.com/pricing
• Anthropic, "Claude Pricing" (checked October 1, 2026): https://claude.com/pricing
• Google Search Central Blog, "Google Search's guidance about AI-generated content" (February 8, 2023): https://developers.google.com/search/blog/2023/02/google-search-and-ai-content
• Google Search Central, "Spam policies for Google web search": https://developers.google.com/search/docs/essentials/spam-policies