AI Undetectable vs Paragraph
Both are in AI content tools. Here is how their plans, prices and features compare, taken from each vendor's own site.
The main differences
- AI Undetectable's cheapest paid plan is $5/mo, against $16/mo for Paragraph.
| AI Undetectable | Paragraph | |
|---|---|---|
| Starting price | from $5/mo | Free plan · from $16/mo |
| Free plan | Not stated by the vendor | Yes |
| Free trial | Yes | Not stated by the vendor |
| Plans | 10K words ($9.99/mo, $5/mo annual, $60/yr); 20K words ($19/mo, $9.50/mo annual, $114/yr); 35K words ($31/mo, $15.75/mo annual, $189/yr) | Free ($0); Starter ($16/mo annual, $192/yr); Growth ($80/mo annual, $960/yr); Scale ($160/mo annual, $1,920/yr) |
| Fees and pricing notes | None stated | None stated |
| Best for | Creators | Not stated |
| Key features | AI text detector that estimates how machine-written a passage looks; Two rewrite modes: Basic and a deeper Stealth rebuild; Image detector for uploaded images or image links; Five writing modes: general, essays, articles, marketing copy and stories | Posts, newsletters, social campaigns and landing pages generated from company context; 900+ connected tools including Slack, Notion, GitHub, Stripe and HubSpot; Playbook templates for launches, case studies and press releases; Approval required before anything is published |
| Checked on | 2026-10-08 | 2026-10-04 |
Prices change; confirm on the vendor's site before you buy. Full details and sources are on each tool's page.
AI Undetectable
- 3-day free trial on every plan
- Yearly billing is about 50% cheaper
- Detector and rewriter in one workspace
Trade-offs
- No free plan, and the selected plan is billed after the trial unless cancelled
- Monthly word allowances do not roll over
- Detector scores are estimates, not proof of how a text was written
Paragraph
- Free plan with 2,000 subscribers
- Nothing publishes without approval
- Annual billing saves 20%
Trade-offs
- The free plan has only 500 monthly credits
- A custom domain starts on Starter
- Growth is $80 and Scale $160 a month billed annually