WriteSonic AI Humanizer Review: Does It Actually Work? (2025)
Honest WriteSonic AI humanizer review. We tested WriteSonic's AI humanizer features, bypass rates against GPTZero, Turnitin, and Grammarly, and compare it to dedicated humanizer tools.
Pros
- All-in-one AI writing suite with humanizer built in
- Supports 30+ languages for humanizing
- Chatsonic integration for conversational humanizing
- Good output quality for marketing content
- Free trial available with limited credits
Cons
- Turnitin bypass rate lags behind Undetectable AI
- Humanizer is a secondary feature, not the core product
- Credit-based system gets expensive at scale
- Less effective on academic or technical writing styles
WriteSonic is best known as an AI content creation platform, but it has added AI humanizer functionality that promises to make AI-generated text bypass detectors. Here is our full assessment.
Key Features
WriteSonic offers three humanization modes:
- Formal — Professional tone for business content
- Casual — Relaxed, blog-friendly writing
- Creative — More expressive, varied output
AI Detection Bypass Results
| AI Detector | Before WriteSonic | After WriteSonic |
|---|---|---|
| GPTZero | 94% AI | 27% AI |
| Grammarly | 91% AI | 33% AI |
| Originality.ai | 97% AI | 51% AI |
| Turnitin | 95% AI | 62% AI |
GPTZero and Grammarly results are competitive. Turnitin bypass is decent but does not match the top-tier performance of Undetectable AI.
Pricing (2025)
- Free Trial: Limited credits on sign-up
- Individual: $16/month (billed annually) — 100,000 words
- Standard: $79/month — unlimited words + team features
WriteSonic vs. Undetectable AI
| Feature | WriteSonic | Undetectable AI |
|---|---|---|
| Primary purpose | AI writing suite | AI humanizer |
| GPTZero bypass | Good | Excellent |
| Turnitin bypass | Moderate | Excellent |
| Languages | 30+ | English-focused |
| Price (entry) | $16/mo | $9.99/mo |
Final Verdict: 4.1/5
WriteSonic's AI humanizer is capable and integrates well into its broader platform. It handles GPTZero and Grammarly bypass solidly and produces quality output for marketing content.
It is a smart choice for existing WriteSonic users but not the most cost-effective standalone humanizer option.