StealthGPT vs SuperHumanizer

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 SuperHumanizer (StealthGPT has paid plans only)
Public API: Both have one
Best fit: StealthGPT: Content operations running bulk rewriting through an API or n8n workflow · SuperHumanizer: Students and writers who want a quick pass to reduce robotic phrasing
Platforms: StealthGPT: Web, Chrome extension, iOS · SuperHumanizer: Web, iOS, Android, Chrome extension
Trust score: About even — StealthGPT 86, SuperHumanizer 82

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

SuperHumanizerRewrites AI-drafted text to read as human-written and lower AI-detector scores; free per-run tier, paid word plans and an API.

Side by side

Fact	StealthGPT	SuperHumanizer
Category	AI Detection & Humanizers	AI Detection & Humanizers
Pricing model	Paid	Freemium
Starts at	—	$12/mo
Public API	Yes	Yes
Trust score	86 / 100	82 / 100
Platforms	Web, API, Chrome extension, iOS	Web, iOS, Android, Chrome extension, API
Company	XYZ AI, Inc.	Kamranali Limited
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

SuperHumanizer

SuperHumanizer is a quick way to soften the tell-tale patterns of AI-drafted text, and the free per-run tier still needs no account. It has grown into a paid product, though: the Premium Engine and the built-in detector now sit behind $12–39 monthly word plans, and the bypass-rate claims come only from the vendor. Treat it as a polishing pass rather than a guarantee against any specific detector.

Pros

Free tier works with no account or payment
Two rewrite intensities depending on how much change is needed
Available on web, iPhone, Android and as a Chrome extension
Per-word API with a free 1,000-word trial

Cons

1,200-word cap per free run forces splitting longer documents
Detector-bypass claims are unverified vendor statistics
The built-in detector and Premium Engine are paid-only

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 SuperHumanizer if you need

Students and writers who want a quick pass to reduce robotic phrasing
One-off rewrites under 1,200 words without creating an account
Developers adding humanization to their own product through the API