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StealthGPT vs WriteHuman

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. WriteHuman publishes a starting price ($12); StealthGPT does not. Only WriteHuman has a free tier. Both ship a public API.

StealthGPTRewrites AI-generated text to slip past AI detectorsWriteHumanRewrites AI-generated text to read as human and scores it against detector models

Side by side

FactStealthGPTWriteHuman
CategoryAI Detection & HumanizersAI Detection & Humanizers
Pricing modelPaidFreemium
Starts at—$12 month
Public APIYesYes
PlatformsWeb, API, Chrome ExtWeb, Chrome Ext, iOS, Android, API
CompanyXYZ AI Inc.WriteHuman
Launched2023—
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

StealthGPT

The only thing here that competitors do not match is the developer surface — REST API, MCP server and n8n node — so this is the humanizer you pick if you are automating a content pipeline, not the one you pick to write an essay. Everything it sells is a bet on an arms race the detector vendors are also funding.

Pros

  • Genuine developer stack — documented API reference plus an MCP server, which rivals lack
  • Bundled detector lets you check before and after in one place
  • Chrome extension humanizes directly in any text field
  • Enterprise tier handles up to 20,000 words per run

Cons

  • Pricing page is behind a Vercel bot check, so prices cannot be compared without signing up
  • Daily request caps sit behind plans that market themselves as unlimited
  • Rewriting reliably flattens nuance and introduces awkward phrasing that needs an editing pass
  • Positioning around beating Turnitin invites institutional and reputational risk

WriteHuman

As humanizers go this one is unusually transparent about its own scoring, showing per-sentence detection probability instead of a single vague pass mark, and its surface area — extension, mobile apps, API, MCP — is wider than most rivals. The catch is what the tool is for: passing AI-detection checks breaches most academic integrity policies, and no vendor can guarantee any detector's verdict.

Pros

  • Sentence-level detection scores rather than a single opaque verdict
  • Chrome extension, iOS and Android apps, plus a documented API and MCP access
  • Free tier lets you judge output quality before paying
  • Annual billing cuts the effective monthly rate by roughly a third

Cons

  • Request counts and word caps are tight on the lower tiers
  • Detector outcomes are probabilistic and shift as detectors are retrained
  • Use is disallowed by most academic integrity policies

Which one fits

Choose StealthGPT if you need

  • Content operations running bulk rewriting through an API or n8n workflow
  • Non-native English writers softening obviously templated LLM prose
  • Agencies that need humanizing inside an existing WordPress or Zapier stack

Choose WriteHuman if you need

  • Editing machine drafts into prose that sounds less uniform
  • Non-native writers smoothing generated text across 40-plus languages
  • Developers who want rewriting inside their own pipeline via the API

More comparisons

All WriteHuman alternatives →Browse all AI Detection & Humanizers →