Included in Grammarly Premium ($12/mo annual) and Business plans.
| Plan detail | Value |
|---|---|
| Starting price | $12/mo |
| Free tier | 0 words — none |
| Estimated annual cost at entry tier | $144/yr |
| Bundled AI detector | Not included — separate tool needed |
Is Grammarly AI Humanizer worth the price?
Grammarly AI Humanizer is priced around the category average of roughly $12/month. Professionals who want more natural-sounding AI-assisted drafts without a dedicated bypass-focused tool.
Grammarly is explicit that the feature is meant to improve natural tone rather than guarantee detector evasion, which sets it apart from bypass-first competitors.
How to reduce your cost
- Use the 0-word free tier for occasional short passages before committing to a subscription.
- Annual billing typically discounts the monthly rate by 20–40% across this category — check Grammarly AI Humanizer's pricing page for the current annual rate.
- Budget for a separate detector tool if you need to verify output before publishing.
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How Grammarly AI Humanizer compares on price
| Tool | Starting price | Free tier |
|---|---|---|
| WriteBros.ai | $1.99/mo | 0 words |
| HideMyAI | $6.99/mo | 150 words |
| AI Natural Write | $7.99/mo | 400 words |
| WriteHuman AI | $8/mo | 100 words |
| QuillBot Humanizer | $8.33/mo | 125 words |
| Walter Writes AI | $9/mo | 200 words |
| Litero AI Humanizer | $9.95/mo | 250 words |
| Undetectable AI | $9.99/mo | 250 words |