Alternatives
10 best Grammar Check alternatives
Tools that cover the same task as Grammar Check (writing), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Grammar Check starts at
- $4/mo
- Free plan
- Free plan
- API
- API available
- 01
PerfectEssayWriter
PerfectEssayWriter.ai is a suite of more than 30 AI writing and academic tools spanning essay drafting, grammar, paraphrasing, grading, plagiarism checks, and citations. Students start on a permanent free account and upgrade for higher monthly word and checker limits across Standard, Pro, and Premium plans.
Best for: Students and academic writers who need bundled essay, grammar, detector, and citation tools in one subscription.
- 02
UndetectedGPT
UndetectedGPT humanizes AI-generated text, runs Ghost Writer drafting, and bundles AI detection across major checker brands. The vendor sells monthly Plus, Pro, and Max plans with credits, boosts, and higher per-request word limits, plus a documented API and MCP integration for other apps.
Best for: Writers and students who draft with mainstream AI tools and want rewriter, detector, and tone controls before publishing or submitting work.
- 03
AI Undetect
AI Undetect combines AI detection scoring with an undetectable rewriter that humanizes AI drafts across 20+ languages. Users paste text, run detector checks against mainstream algorithms, then rewrite with style controls including Auto-Perfect mode on paid plans.
Best for: Students, marketers, and writers who need to test AI scores and rewrite copy to read more naturally.
- 04
BypassDetection
Humbot (also referenced under BypassDetection branding) is an all-in-one AI study and writing suite with humanizer, detector, plagiarism and grammar checks, ChatPDF, math helpers, and summarizers. It targets students and writers who want originality-focused rewriting and study tools together.
Best for: Students and writers who need humanization, detection checks, and study helpers in one subscription.
- 05
DetectGPT - AI Humanizer
DetectGPT provides an AI humanizer and detector suite to rewrite AI-generated text so it reads naturally and passes detector checks. Paid plans bundle monthly word quotas for humanization, detection, batch files, and plagiarism checking.
Best for: Writers, freelancers, and teams needing to humanize AI drafts and validate them against major detectors.
- 06
AssignmentGPT
AssignmentGPT AI is a student-focused writing and homework assistant covering essays, math solvers, code help, diagrams, and upload-image Q&A. Public pricing lists tiered word limits, multilingual support on higher plans, and promotional monthly rates on paid subscriptions.
Best for: Students and educators who want AI help across assignments, math, coding, and content writing from one dashboard.
- 07
textadviser.com
TextAdviser is an AI writing assistant for grammar, paraphrasing, AI detection humanization, and plagiarism checks with mobile apps promoted on Google Play. Pack pricing sells 30-day character bundles from Mini through MAX tiers in USD.
Best for: Students, copywriters, and bloggers polishing drafts, bypassing AI detection, and checking plagiarism.
- 08
Cabina.AI
Cabina.AI is an all-in-one AI workspace that bundles chat with many LLMs, image and video models, PDF chat, transcription, and dozens of writing utilities in one interface. Token-based subscriptions unlock higher limits across text, image, and audio generation tools.
Best for: Creators and operators who want many models and utilities in one subscription instead of separate tools.
- 09
BypassGPT
BypassGPT humanizes AI-generated text to read naturally, pass plagiarism checks, and reduce detection scores from tools such as Turnitin and Originality.ai. It advertises fast, enhanced, and creative rewrite modes with a built-in AI checker.
Best for: Writers and marketers who need undetectable, human-like rewrites of AI drafts for publishing or SEO.
- 10
AI Humanizer by WriteHybrid
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.
Best for: Students, marketers, and professionals who need AI drafts rewritten to pass detectors like GPTZero, Turnitin, or Originality.ai without losing intent.
Grammar Check alternatives: common questions
What is the best free alternative to Grammar Check?
PerfectEssayWriter has an ongoing free plan. Permanent free account with 5,000 words per month across tools, 5 grader reports, and 3 AI detections with no credit card or expiry. Free plans change, so check the vendor before relying on one.
What is the cheapest Grammar Check alternative?
textadviser.com has the lowest listed starting price at $1.99/mo, compared with $4/mo for Grammar Check.
Which Grammar Check alternatives have an API?
UndetectedGPT, AI Undetect, BypassDetection, DetectGPT - AI Humanizer, Cabina.AI mention API or developer access.