VS
Head-to-Head Comparison
QuillBot vs Sudowrite
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Published Last updated
- QuillBot starts at £4/mo and Sudowrite at US$19/mo — published in different currencies, so not a like-for-like figure.
- QuillBot is best for trying AI writing without paying; Sudowrite for businesses needing enterprise-ready AI writing.
QuillBot
AI Writing
7.3/ 10
Free · Free tier
Best for trying AI writing without paying
Visit QuillBotSee all AI Writing Tools →
Sudowrite
AI Writing
7.1/ 10
US$19/mo · Paid only
Best for businesses needing enterprise-ready AI writing
Visit SudowriteSee all AI Writing Tools →Some “Visit” links are affiliate links. How we earn →
Feature comparison
| Feature | QuillBot | Sudowrite |
|---|---|---|
| CompareMyAI score | 7.3 / 10 | 7.1 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| Vendor holds SOC 2 | ||
| Vendor holds ISO 27001 | ||
| MFA supported | ||
| Trains on your data |
Certifications may only cover business or enterprise plans. Check the vendor’s trust page for your plan.
QuillBot comes out ahead — and you can try it free.
Try QuillBot freeAffiliate link · how we earn
Pricing
Price checked with vendor on
FreeFree
Hobby & StudentUS$19/mo ≈£14.28/mo
ProfessionalUS$29/mo ≈£21.79/mo
MaxUS$59/mo ≈£44.34/mo
Enterprise—
Always check the provider's site for the latest pricing.
Pros & cons
QuillBot
Pros
- +Free tier paraphrases up to 125 words with no time limit
- +9 paraphrase modes including Formal, Simple, Creative, and Expand
- +Premium at £4/mo (annual) is the lowest price in the writing category
- +Plagiarism checker and AI Detector bundled with Premium
Cons
- −GDPR and SOC2 not confirmed from official sources
- −Free tier capped at 125 words per paraphrase — limiting for longer content
- −Focused on paraphrasing — not a full-document AI writing assistant
Sudowrite
Pros
- +Explicit commitment to never training on user manuscripts — confirmed on pricing page
- +Specialised fiction tools: character generation, outline, scene expansion
- +Claims no rights over user content or generated output
- +30+ language support across all plans
Cons
- −No free tier — paid plans only
- −GDPR and SOC2 not confirmed from official sources
- −Fiction-only focus — not suited for marketing copy, email, or business writing
Our take— QuillBot wins
Based on our comparison of published pricing, features, and compliance data, QuillBot pulls ahead with a free tier. Sudowrite counters with enterprise-grade readiness. QuillBot scores 7.3/10 to Sudowrite's 7.1/10. Pick QuillBot if you need a free tier; pick Sudowrite if you need enterprise-grade readiness.
Frequently asked questions
Does QuillBot train on your data?
Based on published vendor information, QuillBot does not train its models on your data. Policies can differ by plan and change over time, so it is worth confirming the current terms on the vendor's site.
Does Sudowrite train on your data?
Based on published vendor information, Sudowrite does not train its models on your data. Policies can differ by plan and change over time, so it is worth confirming the current terms on the vendor's site.
Are QuillBot and Sudowrite GDPR compliant?
Neither QuillBot nor Sudowrite is recorded as GDPR compliant in our data. If GDPR matters to you, confirm the current position directly with each vendor before relying on it.
Do QuillBot and Sudowrite have a free tier?
QuillBot offers a free tier, while Sudowrite is paid only. If you want to try before paying, QuillBot is the one to start with.
Which has an API, QuillBot or Sudowrite?
Neither QuillBot nor Sudowrite is recorded as offering public API access in our data. If you need to integrate programmatically, confirm current availability with the vendor.