An alternative to Undetectable AI, with a different philosophy
Undetectable AI is the best-known name in this category, built around detector scores and monthly subscriptions. TextPolishAI is built around something else: polishing your own drafts faithfully, paid once, with words that never expire.
Natural, neutral polish for any draft. One word of input = one word charged, only when the rewrite succeeds.
Where the two tools differ
Pricing model: Undetectable AI charges monthly (about $9.99/month for 10,000 words, per recent public reviews) and unused words reset. TextPolishAI sells one-time packs — $9.99 for 20,000 words, $19.99 for 60,000 — that stay in your account until you spend them.
Promise: Undetectable AI markets itself on detector outcomes. We deliberately make no detector promises at all; detector results vary by tool, text and week, and independent tests of the whole category show wildly mixed results. What we promise is checkable: your facts, figures and names come back exactly as written, and the prose reads more naturally.
Extras: Undetectable AI bundles its own detector. We offer a free heuristic checker too — labelled honestly as an estimate, computed in your browser.
Which should you choose?
If you want a subscription suite centred on detector scores, the bigger brand is the obvious pick. If you want to polish your own drafts occasionally, keep your facts locked, and never watch a balance expire at month-end, that is exactly the gap TextPolishAI was built for.
Questions
No. This page is an independent comparison based on publicly available pricing and feature information as of October 2026.
We promise nothing about detectors — for any tool, including ours. We promise fidelity: your content survives the polish intact, and the writing reads naturally.
Yes: 1,500 starter words without an account, and our checker page is free and unlimited.