• Multi-Model AI Detector (Free) — Checks your text against 8 major AI detectors at once — including GPTZero, Originality.ai, Copyleaks, and ZeroGPT — delivering a consolidated human score instantly with no account or signup required.

• AI Humanizer with Writing Level Matching — Rewrites AI-generated text at your chosen reading level (Elementary, High School, College, PhD, or Custom) so the output naturally fits your target audience without manual editing.

• Chrome Extension — Brings detection and humanization directly into Google Docs, Gmail, social media platforms, and any webpage, letting you humanize content without switching tabs.

• Smart Job Applier — Automatically generates tailored cover letters and job application responses that read as naturally human-written, optimized to avoid AI flags from employer screening tools.

• Human Auto Typer — Simulates authentic keyboard input behavior to produce text that bypasses behavioral AI detection systems that analyze typing patterns in addition to content.

• 50+ Language Support — Detects and humanizes content in over 50 languages with multilingual AI detection and rewriting, with English offering the highest verified accuracy.

• Money-Back Guarantee — If any humanized output is flagged as AI-generated by a covered detector, Undetectable AI refunds the cost of that humanization — a unique confidence guarantee in the market.

• Business API — Available on custom Business plans; enables developers and enterprise teams to programmatically submit text for detection and humanization at production scale with resale, support, and customization options.

• Ghost Mini Model — The fast, lightweight humanization model available on all plans including free; suited for quick AI detection bypass on basic detectors, with 10 daily runs on the free plan and unlimited runs on all paid plans.

• Ghost Pro Model — The advanced deep-restructuring model available on paid plans (20 daily runs on Basic, 50 on Standard, unlimited on Premium); delivers significantly stronger bypass performance against strict detectors like Turnitin and GPTZero compared to Ghost Mini.

• 1-to-10 Adjustable Rewrite Intensity — A granular intensity slider that controls how aggressively the humanizer restructures text; lower settings preserve original phrasing, higher settings maximize departure from detectable AI writing patterns — giving writers precise control not found in most competitors.

• Deep Scan with Sentence-Level Color Coding — Performs sentence-by-sentence analysis before and after humanization, highlighting exactly which sentences remain flagged and at what AI probability level — more interpretable than a single document-level percentage.

• Alternative Rewrites — Click any individual sentence in the humanized output to select from multiple AI-generated rewritten alternatives; enables voice-level manual customization of the final text without a complete re-run.

• Built-in AI Detector (99.8% Claimed Accuracy) — Scans submitted and humanized text instantly against major AI detectors without switching to an external platform; results display alongside the humanized output in the same workflow.

• Content Generator — Available on all paid plans; drafts original content from prompts directly within the StealthWriter platform, combining generation and humanization in one tool.

• Multiple Style and Tone Presets — Allows users to select output tone (formal, conversational, academic) before humanization, adapting the rewrite to fit the intended audience and content context.