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DecEptioner vs Undetectable AI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. DecEptioner starts at $10, Undetectable AI at $9.99. Both have a free tier. Both ship a public API.

DecEptionerRewrites AI-generated text so it stops tripping Turnitin, GPTZero, Originality and similar detectorsUndetectable AIRewrites machine-written drafts to read human, with detection scoring built in

Side by side

FactDecEptionerUndetectable AI
CategoryAI Detection & HumanizersAI Detection & Humanizers
Pricing modelFreemiumFreemium
Starts at$10 month$9.99 month
Public APIYesYes
PlatformsWeb, Chrome Ext, APIWeb, API, Chrome Ext
Company—Undetectable Inc.
Launched—2023
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

DecEptioner

A detector-evasion rewriter with an unusually plain pitch: it names the detectors it aims to beat and prices word volume in tiers from $10 a month. The free tier is enough to test whether the output survives your own detector. The real problems are not technical — the vendor is anonymous, detector evasion breaks most schools' academic-integrity rules, and every detector update can invalidate the whole product overnight.

Pros

  • Free tier of 1500 rewriter words needs no card and shows the output quality up front
  • Word allowances and per-request caps are stated plainly for every tier
  • Chrome extension in addition to the web app, with 30-day rewrite history on all plans
  • API access included on Premium and on any annual plan

Cons

  • No company, founder or country is named anywhere on the site
  • Detector evasion is a moving target — any detector update can reset the claim
  • API is withheld from monthly Basic and Standard subscribers
  • The free tier caps a single rewrite at 400 words, too short for most documents

Undetectable AI

Buy it only if you accept that passing a detector is a moving target: detector vendors retrain constantly, and text that cleared last month can flag next month. As a multi-format detection dashboard it is more defensible than as a bypass tool.

Pros

  • Detector and rewriter run in one pass, so you see which sentences changed and why
  • Coverage extends past text into image, voice, video and document classifiers
  • Browser extension works inside Docs and Gmail rather than a separate tab
  • Entry tier is genuinely cheap at annual rates

Cons

  • Rewrites often flatten voice and add filler to break statistical patterns
  • Detection on short passages is unreliable in both directions
  • Word quotas drain fast because rejected attempts still consume them
  • The free trial caps at 250 words, barely enough to judge output quality

Which one fits

Choose DecEptioner if you need

  • Writers whose genuinely human drafts keep getting false-flagged by a detector
  • Testing how brittle a given AI detector actually is
  • Bulk rewriting where per-word cost matters more than style

Choose Undetectable AI if you need

  • Marketers cleaning up bulk LLM drafts before publishing
  • Editors wanting a second opinion on submitted copy
  • Teams screening images and audio for synthetic origin
  • Non-native writers smoothing register and tone

More comparisons

All DecEptioner alternatives →All Undetectable AI alternatives →Browse all AI Detection & Humanizers →