EssayGrader vs Undetectable AI StealthGPT

Side-by-side comparison · Updated October 2026

 EssayGraderEssayGraderUndetectable AI StealthGPTUndetectable AI StealthGPT
DescriptionEssayGrader is a browser-based assessment assistant for teachers reviewing student writing. Educators can choose or upload a rubric, import assignments, review suggested scores and feedback, and edit the results before sharing them. The current service includes standards-aligned rubrics, handwritten essay processing, revision comparisons and classroom writing insights. Teacher review remains essential: a suggested score or detection flag is not a final educational judgment. The current pricing table lists a free Basic plan with 50 essays graded and 50 essays summarized per month, with a 1,000-word limit per essay. The homepage separately advertises 100 essays free without specifying a recurring allowance. Use the plan table's 50-per-month limit for planning and confirm any introductory allocation in the account; do not assume the homepage offer means 100 essays every month. The current pricing table no longer lists a Lite tier. Pro costs $19.99 per month with monthly billing, or an advertised $14.99 per month when annual billing is selected. It includes 350 essays per month, a 3,500-word limit per essay, AI-writing and plagiarism checks for 350 essays, and native Google Classroom, Canvas and Schoology integrations. Premium costs $49.99 monthly or an advertised $34.99 per month with annual billing, with 800 essays per month and an 8,000-word limit. The calculated annual equivalents are $179.88 for Pro and $419.88 for Premium; the terms specify USD and exclude applicable taxes. Confirm the final checkout amount and billing period. The School District / Higher-Ed option is quoted for 25 or more users. It offers a mix of Pro and Premium licenses, administration, teacher and administrator training, institutional analytics and data-agreement support. This is not an unlimited individual plan. Match the license mix to the number and length of assignments each educator handles. For a useful evaluation, use permitted sample work, a clear rubric and a small set of essays you have already assessed. Check suggested scores against the relevant criteria, verify that comments accurately describe the text, and edit feedback for the student's needs. For handwritten work, inspect the transcription before judging the feedback. Compare revision drafts to see whether the advice helps identify specific improvements. Confirm LMS access on the chosen plan before depending on automatic import and return of grades. The official FAQ states that student submissions are not used to train AI models. Its privacy policy and terms require users to remove or anonymize student and minor identifiers, including metadata, before uploading work. They also describe third-party processing, so a no-training statement does not mean no provider ever processes the data. The April 2026 privacy policy describes deletion within 60 days of an account-deletion request, subject to legal or contractual exceptions; the older terms also mention storage for up to 180 days after termination. Resolve the applicable retention commitments with the provider before an institutional rollout. Tech Nest Ventures Inc. is the service provider named in EssayGrader's terms and privacy policy. Compare CoGrader for another teacher-facing rubric and feedback workflow, using the same assignment sample and review criteria. EssayGrader's terms make subscriptions recurring and generally do not promise refunds; check cancellation and institutional notice requirements before purchasing.StealthGPT is an AI-powered content writing assistant designed for creating text that can bypass AI detection systems, ensuring high-quality, human-like output. This tool uses advanced NLP techniques to tweak sentence structures, vocabulary, and writing styles to appear human-authored. Key features include an AI Humanizer, Stealth Writer, Essay Generator, Chat with Stealth, and AI Checker. It is valuable in academic writing, content marketing, business communication, and creative writing, providing diverse uses while maintaining content undetectability. Distinctly, it offers a comprehensive suite of tools and regular updates to maintain technological competitiveness, supporting various languages and file formats via API integration for seamless use.
CategoryEducationAI Detection
RatingNo reviewsNo reviews
PricingFreemiumPaid
Starting PriceFree$4.99/mo
Plans
  • Basic — Free
  • Pro monthly — $19.99/mo
  • Pro annual — $179.88/yr
  • Premium monthly — $49.99/mo
  • Premium annual — $419.88/yr
  • School District / Higher-Ed — Contact for pricing
  • Essential Plan — $8.33/mo
  • Essential Plan — $14.99/mo
  • Essential Plan — $99.99/yr
  • Pro Plan — $16.66/mo
  • Pro Plan — $19.99/mo
  • Pro Plan — $199.99/yr
  • Exclusive Plan — $24.99/mo
  • Exclusive Plan — $29.99/mo
  • Exclusive Plan — $299.99/yr
  • Stealth Samurai engine upgrade — $4.99/mo
Use Cases
  • Teachers grading essays at scale
  • Educators managing classroom writing assignments
  • Schools and districts standardizing assessment
  • Teachers giving feedback on multiple writing formats
  • Academic professionals
  • Content marketers
  • Business communicators
  • SEO specialists
Tags
AI essay gradingrubric feedbackteacher toolsLMS integrationwriting assessment
AI DetectionNatural Language ProcessingContent CreationWritingUndetectable content
Features
AI grading suggestions with editable scores and feedback
Custom and standards-aligned rubrics
Free Basic:50 essays graded per month
Pro:350 essays per month; Premium:800
Native LMS integrations on Pro and Premium
Handwritten essay processing and revision comparisons
AI-writing and plagiarism signals for educator review
Quoted school and higher-education licensing
AI Humanizer: Converts AI-generated text into natural, human-like writing to avoid detection by AI tools
Stealth Writer: Crafts original content that mimics human styles, specifically designed to bypass AI detection
AI Checker: Analyzes and evaluates text for AI generation traces, helping users gauge the detectability of their content
Chat with PDF: Enables users to engage with PDF documents, extracting data to create summaries or responses that are hard to detect
SEO Writer: Produces SEO-friendly content without triggering AI detection alarms
Photo to Answers: Transforms images into humanized text responses, expanding functionality beyond text input
Chrome Extension: Lets users generate undetectable prose directly from any web page for seamless workflow integration
Multilingual Support: Offers content creation in multiple languages for accessibility to a global audience
API Integration: Provides an API to embed its capabilities into other platforms, facilitating smooth integration
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