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.

The short answer

Free plan: Only WriteHuman (StealthGPT has paid plans only)
Public API: Both have one
Best fit: StealthGPT: Content operations running bulk rewriting through an API or n8n workflow · WriteHuman: Editing machine drafts into prose that sounds less uniform
Platforms: StealthGPT: Web, Chrome extension, iOS · WriteHuman: Web, Chrome extension, iOS, Android
Trust score: About even — StealthGPT 86, WriteHuman 90

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

StealthGPTRewrites AI-generated text to slip past AI detectors

WriteHumanRewrites AI-generated text to read as human and scores it against detector models

Side by side

Fact	StealthGPT	WriteHuman
Category	AI Detection & Humanizers	AI Detection & Humanizers
Pricing model	Paid	Freemium
Starts at	—	$12/mo
Public API	Yes	Yes
Trust score	86 / 100	90 / 100
Platforms	Web, API, Chrome extension, iOS	Web, Chrome extension, iOS, Android, API
Company	XYZ AI, Inc.	WriteHuman LLC
Launched	2023	—
Last verified	Oct 22, 2026	Oct 15, 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