Best AI tools to write SEO blog articles
Short answer
Surfer ranks #1 for write SEO blog articles (score 8.4/10). Pricing: Standard $99/mo; free tier: no. Runners-up: Frase, Claude.
Top 5, ranked by our published rubric. Sponsorship never affects the order. Last updated 2026-10-13.
1Surfer
SEO content optimizationScore 8.4/10 (fit 10.0 · value 3.8 · breadth 10 · availability 10) · how we score
Pricing: Free tier: no · Paid from: Standard $99/mo · source, Pricing last checked: 2026-10-13 · Site checked: 2026-10-13 (live)
Why ranked: Its own site says: “Track and improve your brand's visibility across Google and AI search engines like ChatGPT, Gemini, and Perplexity.” We placed it 1st of 5 on fit for this task. No free plan confirmed; paid from Standard $99/mo.
2Frase
SEO content research and writingScore 8.3/10 (fit 8.5 · value 8.8 · breadth 6 · availability 10) · how we score
Pricing: Free tier: yes · Paid from: From $39/month as listed (billed annually) · source, Pricing last checked: 2026-10-13 · Site checked: 2026-10-13 (live)
Why ranked: Its own site says: “The content operating system for AI search.” We placed it 2nd of 5 on fit for this task. Free tier; paid from From $39/month as listed (billed annually).
3Claude
General AI assistant by AnthropicScore 6.7/10 (fit 4.0 · value 10.0 · breadth 10 · availability 7) · how we score
Pricing: Free tier: yes · Paid from: $17/mo billed annually ($20 monthly) · source, Pricing last checked: 2026-10-13 · Site checked: 2026-10-13 (bot-blocked (403))
Why ranked: Its own site says: “No commitment · Cancel anytime Everything in Free, plus: More usage Hand off tasks and get back finished docs, slides, sheets, and designs Claude Code Claude Science Projects More Claude models Claude in Chrome and Microsoft 365 Max ” We placed it 5th of 5 on fit for this task. Free tier; paid from $17/mo billed annually ($20 monthly).
SPONSORED Your tool here: paid placement is shown here, separate from the ranking, and never changes the order. Advertise
4Writesonic
AI SEO and content platformScore 6.5/10 (fit 7.0 · value 4.4 · breadth 6 · availability 10) · how we score
Pricing: Free tier: Unverified · Paid from: From $79/month as listed · source, Pricing last checked: 2026-10-13 · Site checked: 2026-10-13 (live)
Why ranked: Its own site says: “The AI Search Growth Engine. GEO, AEO, and AI visibility in one platform.” We placed it 3rd of 5 on fit for this task. No free plan confirmed; paid from From $79/month as listed.
5Clearscope
SEO content optimizationScore 6.2/10 (fit 5.5 · value 3.8 · breadth 10 · availability 10) · how we score
Pricing: Free tier: no · Paid from: $129/mo · source, Pricing last checked: 2026-10-13 · Site checked: 2026-10-13 (live)
Why ranked: Its own site says: “Clearscope is the discoverability platform for a new era in search.” We placed it 4th of 5 on fit for this task. No free plan confirmed; paid from $129/mo.
FAQ
What is the best AI tool to write SEO blog articles?
By TaskRanking's published rubric, Surfer ranks first, followed by Frase and Claude.
Is there a free AI tool to write SEO blog articles?
Yes: Frase has a free tier per its own pricing page (checked 2026-10-13).
How are these tools ranked?
Score = 50% fit, 25% value (from vendor pricing pages), 15% breadth, 10% availability. Sponsorship never affects rank.