Directory / AI for a task / SEO blog posts
The best AI to write SEO blog posts
Surfer SEO, paired with a good writer: Surfer's content score tells you what the pages already ranking contain that yours does not, and Claude writes the draft in a voice that does not read like a machine. Surfer starts at $49/mo billed annually with no free tier, so if you publish only a few articles a month, start with Writesonic, which builds the SEO structure in before you write.
- 01 Surfer SEO: Making articles rank on Google
- 02 Claude: Long documents, thoughtful writing, and complex reasoning
- 03 Writesonic: SEO articles and content marketing on a budget
- 04 Jasper: Marketing teams producing on-brand content at scale
Top pick
Surfer SEO
From $49/mo (annual) / $59/mo (monthly)
Optimizes each article against the current top 10 results, with a content score that updates as you write and internal-link suggestions from your own site. Discovery is $49/mo billed annually or $59/mo monthly for 120 documents.
- Free tier
- None (no free tier or free trial)
- Entry plan
- $49/mo billed annually or $59/mo billed monthly (Discovery: 120 documents, 10 tracked pages, AI SEO guidelines, Surfy AI assistant)
Pick 02
Claude
Free · Pro from $20/mo
The drafting half. It holds a long article together without drifting and writes in a natural voice, so there is less to rewrite before the optimization pass. Free to start; Pro is $20/mo.
- Free tier
- Chat on web, iOS, Android, and desktop, plus code generation, content creation, web search, memory, file creation, and connector integration, with a limited session-based message allowance
- Entry plan
- Claude Pro, $20/mo billed monthly, or $17/mo billed annually ($200/yr)
Pick 03
Writesonic
Free trial (~10,000 words) · Starter from $79/mo (billed annually)
Builds articles from a live analysis of what already ranks, with keyword data inside the editor, so structure comes first. Expect to edit the prose before it goes live. Starter is $79/mo billed annually for 15 articles a month, after a one-time trial worth roughly 10,000 words.
- Free tier
- No permanent free plan; a one-time trial, no credit card required, worth roughly 10,000 words of credit plus 1 article, 1 site audit (100 pages) and 5 Chatsonic generations
- Entry plan
- Starter, $79/mo billed annually ($948/yr): 15 AI articles/month, 50 prompts and 50 tracked answers per day, 10 site audits (100 pages), 1 user seat, 1 project, 10 agentic trial runs
Pick 04
Jasper
From $59/mo (billed annually)
For a marketing team that must publish in one brand voice: it learns the style guide, applies it for every writer, and has an SEO mode built in. Pro is $59/mo billed annually for one seat.
- Free tier
- 7-day free trial (no permanent free tier)
- Entry plan
- Pro, $59/mo billed annually ($69/mo month-to-month): unlimited AI words, 1 seat, 3 brand voices, Content Canvas, marketing templates, image generation, SEO mode
Skip if
Skip Surfer if you publish fewer than a handful of articles a month: at $49/mo the scoring costs more than it returns, and a free Claude account plus your own read of the top results gets you most of the way.
The free option
Claude's free plan covers drafting, with web search included, under a session-based message allowance. Nothing on this list gives you Surfer-style scoring for free. Claude profile.
Prices side by side
Is there a free AI to write SEO blog posts?
Claude's free plan covers drafting, with web search included, under a session-based message allowance. Nothing on this list gives you Surfer-style scoring for free.
When is Surfer SEO the wrong choice?
Anyone publishing under roughly a handful of articles a month at this price.
Deciding between these
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