AI detection & humanizers

Free plan

SlopSignal

AI detection & humanizers

SlopSignal adds tentative AI-writing labels to posts in X and LinkedIn feeds while users scroll.

• Free
• No public API
• Checked Oct 9, 2026

Free plan

Claude Watermark Remover

AI detection & humanizers

Claude Watermark is an independent browser-based text artifact checker with a paid rewrite engine. It counts HTML markers and invisible Unicode, offers cleanup and resamples wording; it is not affiliated with Anthropic.

• $9.00/mo · starting plan
• API unknown
• Checked Oct 9, 2026

Free plan

AcademicHelp Paraphraser

Writing & content

AHelp’s paraphrasing tool rewrites sentences and paragraphs while preserving meaning, with modes for academic tone and browser extensions for Chrome and Edge. It shares the AHelp Learning Hub subscription that also covers grammar, AI detection, and essay utilities.

• $9.95/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Free trial

AI Bypasser

AI detection & humanizers

AIBypasser.pro humanizes AI-generated text to reduce detection scores across popular checkers. The rewriter offers monthly Standard and Advanced word buckets plus a Lifetime unlimited option with bundled AI detector access.

• $5.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Free plan

AI Checker Tool

AI detection & humanizers

AI Detector (aidetector.com) is a free AI content checker that scans pasted text, uploaded documents, or URLs for signals from ChatGPT, Claude, Gemini, and similar models. It emphasizes multi-detector consensus to reduce false positives and shows sentence-level, color-coded scores plus optional plagiarism checks.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AI Detector Online

AI detection & humanizers

AI-Detector.Online offers a free browser tool to score text and images for AI-generation signals with scenario templates for blogs, essays, emails, and images. It advertises no signup, dual text/image coverage, and instant likelihood scores for content reviewers.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AIDetector Pro

AI detection & humanizers

AI Detector Pro (AIDP) detects and humanizes AI-written text across English, Spanish, French, Arabic, German, Korean, and Portuguese. It combines scanning, editing, tone analysis, and plugins for Word and Google Docs to help writers reduce detectable AI patterns.

• $13.99/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

AI Detector Write

AI detection & humanizers

AI Detector Writer (aidetectorwriter.com) scans pasted or uploaded text for AI authorship across major LLM families, highlighting AI sentences and exporting PDF reports. It supports large pastes up to 300,000 characters, batch file uploads, and multilingual detection marketing.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AI Essay Checker

AI detection & humanizers

EssayCheck runs AI detection, essay grading, and writing feedback in one browser pass. Paste an essay to see an AI-likeness score with sentence highlights, a rubric-style grade with fix-first guidance, and inline spelling, grammar, style, and clarity edits without creating an account.

• Free
• API unknown
• Checked Oct 4, 2026

Free tier unknown

AI Humanize

Writing & content

AI Humanize is marketed at aihumanize.io as a writing assistant for humanizing AI-generated text.

• Not listed
• API unknown
• Checked Oct 4, 2026

Free to start

AIHumanize

AI detection & humanizers

AI Humanize rewrites AI-generated text to read more human and pass detector checks, with Falcon and Maestro model options plus a built-in AI detector. Paid tiers raise monthly word caps and unlock advanced detector bypass claims for Turnitin, GPTZero, and Originality.

• $12.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

AI Humanizer

AI detection & humanizers

Humanize AI Text on humanizeaitext.org converts AI-generated copy into more natural, human-like wording with unlimited free word counts on the main converter. The site positions the output as undetectable against common AI detectors and offers a separate Premium referral link.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AI Humanizer by WriteHybrid

AI detection & humanizers

WriteHybrid humanizes AI-generated text into natural, detector-resistant prose while preserving meaning, with register modes for academic, marketing, casual, and technical writing. The homepage tool includes a 500-word free demo, side-by-side review, and paid monthly word allowances for heavier rewriting volume.

• $19.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free tier unknown

AI Humanizer.com

AI detection & humanizers

AI-Humanizer.com markets an AI detection remover that rewrites ChatGPT or AI-generated copy to read more human-like and achieve stronger human scores on detectors.

• Not listed
• API unknown
• Checked Oct 4, 2026

Free plan

AI Humanizer Text

AI detection & humanizers

AI Humanizer Text provides a free online humanizer to transform AI-generated content into natural writing and reduce AI detection signals. The marketing site emphasizes ease of use for bloggers and students, with a pricing page linked for upgraded usage.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AI Humanizer.work

AI detection & humanizers

AIHumanizer on aihumanizer.work converts stiff AI-generated text into natural, human-like writing online. The tool supports long inputs, optional file uploads, built-in AI detection checks, and multiple export formats without requiring sign-up.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AI Image Detector

AI detection & humanizers

AI Image Detector lets users upload an image and receive a percentage breakdown of how likely it is AI-generated versus human-made. The tool targets digital artists, creators, and legal reviewers who need quick authenticity checks with guidance on visual cues that often appear in synthetic images.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AI or Not

AI detection & humanizers

AI or Not provides an AI detection platform and API to classify text, images, audio, video, and deepfakes, marketed at 98.9% accuracy with credit-based plans for developers and businesses.

• $5.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free to start

AI Plagiarism Checker

AI detection & humanizers

PlagiarismCheck.org’s AI Detector scores text sentence-by-sentence to flag likely AI-generated lines from models such as ChatGPT, helping educators, SEO teams, and writers assess authenticity.

• Not listed
• API available
• Checked Oct 4, 2026

Free plan

AIScan24

AI detection & humanizers

AIScan24 is a free browser AI-text detector that scores how closely pasted writing resembles LLM output from models such as ChatGPT, Gemini, or Claude. It reports an AI-similarity percentage, publishes guideline bands, and advertises an API for integrating the scanner elsewhere.

• Free
• API available
• Checked Oct 4, 2026

Free plan

AI Spy

AI detection & humanizers

Ai-SPY is a browser tool for detecting whether uploaded audio is human or AI-generated. You drag and drop an MP3 or WAV file or provide a link, and the service analyzes the clip and returns an instant authenticity assessment for content verification workflows.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

AIssistify

Writing & content

AIssistify combines browser-local text forensics with voice-directed AI rewriting so edited drafts keep the author’s tone. The homepage exposes hidden Unicode artifacts, editorial cue scoring, and prepaid model credits with a hard spending cap.

• $10.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Free plan

AI Text Auditor

AI detection & humanizers

AI Text Auditor on helloandy.net is a browser-based checker that scans pasted text for 28 AI writing patterns with severity levels and fix suggestions. It also exposes a JSON audit API for agents with rate limits per IP.

• Free
• API available
• Checked Oct 4, 2026

Free plan

AI Text Converter

AI detection & humanizers

AI Text Converter humanizes AI-generated text from ChatGPT, Bard, Jasper, and similar tools into more natural wording across multiple modes and languages. The free site focuses on paste-and-convert workflows for students, bloggers, and SEO writers.

• Free
• API unknown
• Checked Oct 4, 2026

Plan facts carry individual sources and check dates. Unknown values are excluded from required filters.