From $12/mo, scaling with monthly word volume.
| Plan detail | Value |
|---|---|
| Starting price | $12/mo |
| Free tier | 200 words (recurring) |
| Estimated annual cost at entry tier | $144/yr |
| Bundled AI detector | Not included — separate tool needed |
Is GPTinf worth the price?
GPTinf is priced around the category average of roughly $12/month. Writers who want granular control over tone and which specific sentences get rewritten.
Marketed as being trained directly against detector models rather than general paraphrasing, which independent testers cite as the reason its scores hold up on technical text.
How to reduce your cost
- Use the 200-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 GPTinf'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 GPTinf 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 |