Metric37 vs Undetectable AI — Feature & Quality Comparison (2026)
Compare Metric37 and Undetectable AI side by side. Multi-LLM pipeline vs single-pass paraphrasing, pricing, features, and output quality.
| Feature | Metric37 | Undetectable AI |
|---|---|---|
| Rewriting method | Multi-LLM pipeline with eval gate | 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 |
| Tone control | Multiple tone options | Limited style options |
| Free tier | 5,000 words/month | 250-word trial |
| Starting price | $9/month | $9.99/month |
Our verdict
Metric37 offers a more comprehensive humanization pipeline with multi-LLM rewriting, 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 multi-LLM rewriting pipeline 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 (5,000 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 5,000 words/month, 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 (5,000 words/month) before committing to a paid plan.
Try Metric37 free
5,000 words/month, no credit card required. See how it compares to Undetectable AI on your own text.
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