Metric37 vs Undetectable AI — Feature & Quality Comparison (2026)
Compare Metric37 and Undetectable AI side by side. Rewriting engine vs single-pass paraphrasing, pricing, features, and output quality.
| Feature | Metric37 | Undetectable AI |
|---|---|---|
| Rewriting method | Rewrite + quality scoring loop | Single-pass paraphrasing |
| Quality scoring | Automatic human score (0-100) | No built-in scoring |
| Version history | Up to 20 versions with word-level diffs | No version history |
| Iterative refinement | Re-humanize and re-score unlimited times | Limited style options |
| Free tier | 1,500 words (on signup) | 250-word trial |
| Starting price | $9/month | $9.99/month |
Our verdict
Metric37 offers a more comprehensive humanization pipeline with automatic quality scoring and version history. If you need consistent output quality rather than just detector bypass, Metric37 is the stronger choice.
Frequently asked questions
- Is Metric37 better than Undetectable AI?
- Metric37 uses a rewriting engine with automatic quality scoring, while Undetectable AI uses single-pass paraphrasing. Metric37 also offers version history, word-level diffs, and a more generous free tier (1,500 words vs 250 words).
- Which is cheaper, Metric37 or Undetectable AI?
- Metric37 starts at $9/month for 30,000 words. Undetectable AI starts at $9.99/month. Metric37 also offers a free tier with 1,500 words on signup, no credit card required.
- Can I switch from Undetectable AI to Metric37?
- Yes. Metric37 requires no setup — paste your text and humanize. There is no data to migrate. You can try the free tier (1,500 words on signup) before committing to a paid plan.
Try Metric37 free
1,500 words on signup, no credit card required. See how it compares to Undetectable AI on your own text.
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