Best AI Blog Writers for SEO in 2026, Compared by Job

The best AI blog writer depends on what you need besides the words. Every tool here can write a readable post. They differ on whether they plan the topics, write in your brand voice, link posts together and send them to your site.

Here's the short list, by who each fits:

1. Inbounder (our product): founders who want a planned, linked cluster of SEO posts in their voice, sent to WordPress for approval. 3 articles free, then from $39/mo billed yearly.
2. Koala: high-volume bloggers and affiliate sites that want long posts with live data. Starter listed at $25/month.
3. SEOWriting.ai: bloggers who want many articles at the lowest price. From $14/mo billed yearly for up to 50 articles.
4. Jasper: marketing teams writing blogs plus email, ads and social in one brand voice. From $59/mo per seat billed yearly.
5. Frase: established sites that want research, writing and publishing in one SEO tool. From $39/mo billed yearly.
6. Writesonic: teams that care most about how AI answers mention them, with AI articles included. From $79/mo billed yearly.

All prices were checked on each vendor's pricing page on November 2, 2026.

• The writing itself is close between tools. Planning, voice, linking and publishing are where they differ.
• For SEO, a writer that plans linked posts around one topic does more than one that writes single posts on request.
• Cheapest per article: SEOWriting.ai (up to 50 articles from $14/mo billed yearly). Broadest marketing use: Jasper.
• Look for a free plan or trial and test it on your own site. SEOWriting.ai and Inbounder both offer 3 free articles with no card.
• Read every AI post before it goes live. Facts about your product and competitors are where AI writers slip most.

We looked at five things a blog owner needs, using each vendor's public pricing and product pages on November 2, 2026. This isn't a hands-on test of output quality.

1. Planning: does it decide what to write and how posts connect?
2. Brand voice: can it learn how your company sounds?
3. Internal links: does it link new posts to related ones?
4. Publishing: can it send posts to your CMS?
5. Price per article: what the entry plan costs for how many posts.

Sources, checked November 2, 2026: Inbounder pricing · Koala pricing · SEOWriting.ai pricing · Jasper pricing · Frase pricing · Writesonic pricing. Prices and plans change, so check the vendor's page before you buy.

1. Inbounder: a planned, linked cluster in your voice

Inbounder is our product, so weigh this one accordingly. You paste your site's URL, and it builds a brand-voice profile from your pages and plans a pillar-first cluster: one broad pillar post and supporting posts that link to it. Planning, keyword research and the brand voice are free on every plan.

Each article is written in that voice, linked to its pillar and siblings, and given a featured image. You review every article before it goes anywhere. Paid plans send drafts to WordPress in one click; through Inbounder's MCP server, an AI agent can post to Webflow, Shopify, HubSpot or a custom CMS. Search Console then shows impressions, clicks and position for every post in the cluster.

Good fit if: you want search traffic from a blog and would rather approve posts than plan and write them. Not a fit if: you need hundreds of posts a month at the lowest cost per article, or non-blog content like ads and email.

2. Koala: volume and live data

Koala's Starter plan is listed at $25/month with 45,000 words and publishing to WordPress, Shopify, Webflow and Ghost. It advertises real-time factual data and live Amazon data for affiliate articles, plus bulk writing. Professional ($49/month) adds KoalaLinks internal linking and a Search Console and Analytics dashboard.

Good fit if: you run a content or affiliate site and want many long posts with current data. Not a fit if: you want the tool to plan a topic cluster for you before writing.

3. SEOWriting.ai: the lowest price per article

SEOWriting.ai's Starter plan is $14/mo billed yearly ($19 monthly) for up to 50 articles, with 1 brand voice, internal linking for 500 URLs per site and a WordPress integration. It offers 3 free articles with no payment details.

Good fit if: cost per post matters most and you'll plan topics yourself. Not a fit if: you want the tool to decide what to write and how posts connect.

4. Jasper: one voice across every channel

Jasper is a general marketing writer. Pro is $59/mo per seat billed yearly ($69 monthly) and includes 2 Brand Voices, 5 Knowledge assets and 3 Audiences, with a 7-day free trial. It writes blog posts well, but planning and SEO are left to you or to other tools. Our Jasper AI alternatives guide covers SEO-first options, and the Inbounder vs Jasper comparison goes job by job.

Good fit if: your team writes blogs plus email, ads and social, and brand consistency matters most. Not a fit if: blog SEO is most of what you need.

5. Frase: research to published page

Frase's Starter is $39/mo billed yearly ($49 monthly) for 10 articles a month, with a 7-day free trial. It publishes to WordPress, Webflow, Sanity or Wix, and lists an agent that drafts and auto-publishes content on every plan when you switch it on.

Good fit if: you have an established site with search data and want one SEO tool that also writes. Not a fit if: your site is new and has little search data for Frase's research to work from.

6. Writesonic: AI articles plus AI-search tracking

Writesonic's Starter is $79/mo billed yearly and tracks your brand across ChatGPT, Gemini and Google AI Overviews. It includes 15 AI articles a month and 10 site audits (100 pages each) for 1 user and 1 project. The Inbounder vs Writesonic comparison covers the difference in focus.

Good fit if: your first question is how AI answers talk about your brand. Not a fit if: you mainly want blog posts at a lower price.

Start with the job you most need done:

• "Tell me what to write and write it." Pick a tool that plans a cluster: Inbounder, or Frase if your site already has search data.
• "I know what to write; I need many posts cheaply." SEOWriting.ai or Koala.
• "We write across every channel." Jasper.
• "I care most about AI answers." Writesonic.

If you're switching from a general chat writer, our Copy.ai alternatives guide compares long-form options. And if you want the blog to run with less of your time, automated blogging explains which steps are safe to hand over.

The tool matters less than three habits. Each post should answer one question, and answer it in the first lines. Posts on the same topic should link to each other and to one pillar page. And a person should check facts before publishing. An AI SEO writer builds the first two into the writing; the third is yours.

See the cluster plan Inbounder builds for your site, then write 3 articles free with no card. Nothing publishes until you approve it. See plans and start free.