Students, writers, and editors polishing existing text
SEO and content teams tracking AI search visibility at scale
QuillBot and Writesonic both market themselves as AI writing tools, but they solve different jobs in 2026. QuillBot is the dominant paraphraser with 50M+ users at $4.17/mo annual. Writesonic has repositioned to AI search tracking and SEO content generation with a Starter plan at $79/mo annual. According to G2's AI Writing Assistant category, both rank in the top 15 by review volume but compete in adjacent niches, not the same one.
We tested both for 30 days on 50 paraphrase samples, 12 SEO blog posts, and 30 cold emails. Pricing was verified against QuillBot's official pricing page and Writesonic's pricing page.
Short answer: QuillBot wins on paraphrasing, grammar, and price-per-word for editing. Writesonic wins on long-form SEO articles, AI search tracking (ChatGPT, Gemini, Perplexity, AI Overviews), and team workflows. The gap in price (roughly 19x) reflects the gap in scope. Read on for the full feature matrix and verdict.
Side by side
QuillBot
Our pick
Score
4.4 / 5
Price
Free plan
Students, writers, and editors polishing existing text
Best paraphraser on the market with 9 modes and unlimited words on Premium. Bundles grammar checker, plagiarism detector (25K words/mo), summarizer, AI humanizer, and citation generator at $4.17/mo annual. Free plan capped at 125 words per input but is genuinely usable forever, no credit card required.
Writesonic
Score
4.2 / 5
Price
$79/mo
SEO and content teams tracking AI search visibility at scale
Repositioned for GEO and AI search tracking - monitors brand mentions on ChatGPT, Gemini, AI Overviews, Perplexity, Claude, and Copilot. Starter at $79/mo annual covers 50 prompts daily on ChatGPT plus 15 AI articles/mo. Growth at $399/mo unlocks all 6 LLM platforms. No free plan, only a free trial.
Feature comparison
| Feature | QuillBot | Writesonic |
|---|---|---|
| Free plan | 125 words/input, 2 modes, no card | Free trial only |
| Cheapest paid plan | $4.17/mo billed annually ($49.95/yr) | $79/mo billed annually (saves 20%) |
| Paraphraser | Excellent 9 modes, unlimited words on Premium | Basic Article rewriter, 1 mode |
| AI article writer | Co-Writer is short-form only | 15-50 articles/mo on paid tiers |
| AI search / GEO tracking | Tracks 6 LLM platforms on Growth | |
| Plagiarism checker | 25,000 words/mo on Premium | ~ Add-on, not bundled |
| Grammar + summarizer + citations | All bundled in $4.17/mo | Focused on generation, not editing |
| Browser extension + Word add-in | Chrome, Edge, Word, Google Docs | ~ Chrome extension only |
Frequently Asked Questions
Is QuillBot cheaper than Writesonic?
QuillBot is roughly 19x cheaper at the entry tier. QuillBot Premium is $4.17/mo billed annually ($49.95/yr) or $9.95 month-to-month. Writesonic Starter is $79/mo billed annually ($948/yr) or $99/mo month-to-month. The price gap reflects scope: QuillBot is editing-focused, Writesonic now focuses on AI search tracking across ChatGPT, Gemini, Perplexity, and Google AI Overviews.
Does Writesonic have a paraphraser like QuillBot?
Writesonic has a basic article rewriter but only 1 mode. QuillBot has 9 dedicated paraphrase modes (Standard, Fluency, Formal, Simple, Creative, Expand, Shorten, Academic, Custom) on Premium. In our 50-sample test, QuillBot's Fluency and Academic modes were noticeably more accurate than Writesonic's rewriter. For paraphrasing as a primary job, QuillBot wins.
Which is better for SEO blog posts?
Writesonic, but only if you write 4+ blog posts per month. Its AI article writer covers 15 articles/mo on Starter ($79/mo) and 50 articles/mo on Growth ($399/mo), with prompt diversification using SEO keywords. QuillBot does not generate full blog posts. For occasional bloggers, pairing QuillBot ($4.17/mo) with ChatGPT free tier costs less and produces similar quality on under 5 posts/month.
Can QuillBot or Writesonic track AI search visibility?
Only Writesonic. Its AI Search Tracking feature monitors brand mentions on 6 LLM platforms: ChatGPT, Google AI Overviews, Gemini, Perplexity, Claude, and Microsoft Copilot. Starter covers 50 ChatGPT prompts daily, Growth covers all 6 platforms with 200 daily prompts. QuillBot has no GEO or AI search tracking. If GEO is on your roadmap, Writesonic Growth is the entry point.
Is QuillBot's free plan a real alternative to Writesonic?
For paraphrasing and grammar, yes. The QuillBot free plan covers 125 words per input, 2 modes (Standard, Fluency), basic grammar fixes, summarizer up to 1,200 words, AI Humanizer (125 words/6 uses daily) and AI Chat (20 conversations). Writesonic only offers a free trial that expires. For free editing tasks under 1,500 words batched into 125-word chunks, QuillBot free is genuinely usable; Writesonic is not free long-term.
Do QuillBot or Writesonic offer team plans?
Both do, with very different scope. QuillBot Team is custom-priced and adds centralized billing, admin dashboard, and priority support on top of Premium features. Writesonic Basic ($199/mo annual) supports 2 users with up to 3 additional, Growth ($399/mo annual) supports 3 users with up to 2 additional, and Enterprise adds SSO/SAML. For 5+ users running SEO and GEO workflows, Writesonic team plans are more mature.
