| Undetectable AI | Humbot | |
|---|---|---|
| Starting price | $9.99/mo | $9.99/mo |
| Free tier | 250 words | 100 words |
| Bundled detector | Yes | No |
| Founded | 2022 | 2023 |
| Best for | Teams that want one tool to both check and rewrite content across multiple AI models. | Casual users who don't need guaranteed detector evasion, just smoother-sounding text. |
Price: Humbot is cheaper to start, at $9.99/mo vs $9.99/mo.
Undetectable AI: $9.99/mo for the entry tier; higher tiers scale by word volume.
Humbot: Free tier capped at 100 words after signup; paid plans from $9.99/mo.
Free tier: Undetectable AI offers a more generous free tier (250 words).
If you just want to test either tool before paying, Undetectable AI's 250-word allowance gives you more room to evaluate quality.
Detection performance
Undetectable AI: Frequently cited as a top-tier performer against GPTZero and Originality.ai, though results vary by source text length and topic.
Humbot: Independent testers found its free tier underperforms its marketing claims; paid tier results were not independently verified at the same depth.
AI detector included: Undetectable AI bundles a built-in detector; Humbot does not.
Strengths at a glance
Undetectable AI
- Runs output against multiple detector models before returning it
- Supports long-document processing without manual chunking
- Adjustable readability and purpose settings (story, essay, article, email)
Humbot
- Familiar, widely-reviewed brand with an active user base
- Decent performance on general blog and marketing copy
Our verdict
Choose Undetectable AI if: teams that want one tool to both check and rewrite content across multiple ai models. Choose Humbot if: casual users who don't need guaranteed detector evasion, just smoother-sounding text.