Undetectable AI vs Writesonic

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Undetectable AI

See full pricing history

USD · US · source: undetectable.ai

Plan	Pricing	Charged by	Offer type
10K words/month — default	USD 9.99 monthly · USD 5 / month with annual commitment $5.00 /mo Charged annually $60.00	Usage · 10K words/month	Standalone · Fixed
20K words/month — default	USD 19 monthly · USD 9.5 / month with annual commitment $9.50 /mo Charged annually $114.00	Usage · 20K words/month	Standalone · Fixed
35K words/month — default	USD 31 monthly · USD 15.75 / month with annual commitment $15.75 /mo Charged annually $189.00	Usage · 35K words/month	Standalone · Fixed
50K words/month — default	USD 42.5 monthly · USD 21.25 / month with annual commitment $21.25 /mo	Usage · 50K words/month	Standalone · Fixed

Writesonic

See full pricing history

USD · US · source: writesonic.com

Plan	Pricing	Charged by	Offer type
Starter	USD 79 / month with annual commitment $79/month billed annually	Flat · per month	Standalone · Fixed
Basic	USD 199 / month with annual commitment $199/month billed annually	Flat · per month	Standalone · Fixed
Growth Highlighted	USD 399 / month with annual commitment $399/month billed annually	Flat · per month	Standalone · Fixed
Enterprise	Contact sales Custom	Flat · per month	Standalone · Contact sales

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Undetectable AI

10K words/month — default

Highlights Passes AI detectors: Included
Highlights High quality, legible content: Included
Highlights Watermark and future proof: Included
Highlights Writing level matching: Included
Highlights API compatible: Included
Highlights Unlimited Human Auto Typer: Included
Highlights Unlimited AI Detecting: Included

20K words/month — default

Highlights Passes AI detectors: Included
Highlights High quality, legible content: Included
Highlights Watermark and future proof: Included
Highlights Writing level matching: Included
Highlights API compatible: Included
Highlights Unlimited Human Auto Typer: Included
Highlights Unlimited AI Detecting: Included

35K words/month — default

Highlights Passes AI detectors: Included
Highlights High quality, legible content: Included
Highlights Watermark and future proof: Included
Highlights Writing level matching: Included
Highlights API compatible: Included
Highlights Unlimited Human Auto Typer: Included
Highlights Unlimited AI Detecting: Included

50K words/month — default

Highlights Passes AI detectors: Included
Highlights High quality, legible content: Included
Highlights Watermark and future proof: Included
Highlights Writing level matching: Included
Highlights API compatible: Included
Highlights Unlimited Human Auto Typer: Included
Highlights Unlimited AI Detecting: Included

Writesonic

Starter

Plan card AI-search tracking: Included
Plan card AI articles: Included
Plan card Site audits: Included
Plan card 1 user and 1 project: Included

Basic

Plan card SEO and GEO platform: Included
Plan card 50 trial runs: Included
Plan card 2 users: Included
Plan card 25 articles per month: Included

Growth

Plan card AI visibility and sentiment: Included
Plan card Action Center: Included
Plan card Agentic workflows: Included
Plan card 50 articles per month: Included

Enterprise

Plan card Custom projects and users: Included
Plan card SSO and SAML: Included
Plan card Dedicated AI-search strategist: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Undetectable AI

August 27, 2026 Source
- 10K words/month — default: USD 9.99 monthly · USD 5 / month with annual commitment
- 20K words/month — default: USD 19 monthly · USD 9.5 / month with annual commitment
- 35K words/month — default: USD 31 monthly · USD 15.75 / month with annual commitment
- 50K words/month — default: USD 42.5 monthly · USD 21.25 / month with annual commitment

Writesonic

August 27, 2026 Source
- Starter: USD 79 / month with annual commitment
- Basic: USD 199 / month with annual commitment
- Growth: USD 399 / month with annual commitment
- Enterprise: Contact sales