Grammarly vs ZeroTrue

Grammarly is a writing assistant from Grammarly, founded in 2009 and now part of Superhuman. Its listed tools include proofreading, paragraph rewrites, tone suggestions, a humanizer, and AI detector agents. Style suggestions and tone detection are listed, alongside brand voice controls and team collaboration. The Free plan is free and includes 100 AI prompts per month; Pro is $12 a month with 2,000 AI prompts per member per month. Plus is listed at ₹392 INR per member per month when billed annually, and ₹1,000 when billed monthly, and is available only via local payment methods. Grammarly lists 24 supported languages, browser compatibility with Chrome, Safari, Firefox, and Edge, and mobile apps for iPhone, iPad, and Android. Desktop apps and a browser extension are also listed. Grammarly says user content is not sold, monetized for advertising, or used to train third-party models. Its SOC 2 Type 2 report covers security, privacy, availability, and confidentiality controls.

ZeroTrue checks text, images, audio, video, and code for signs that content may be AI-generated, through a web checker and API. Results give an overall probability and supporting details, such as highlighted regions or timestamps, for a person to assess; they are not proof of authorship or intent. The API uses one request pattern across the listed media types, with batch processing and asynchronous webhooks among its capabilities. Python, TypeScript, and Go SDKs are listed, along with Android and iOS apps, a Telegram bot and Mini App, MCP connectivity, and an agent skill. Detection confidence can be reduced by short samples, editing, compression, translation, re-recording, mixed human and AI content, or new generators. The free web image checker accepts JPG and PNG files up to 10 MB. The free plan is free and includes 100 detections per month, API access, a web dashboard, and community support. Enterprise features include on-premise deployment, SSO and SAML, a custom SLA, and a dedicated account manager. ZeroTrue advises human review rather than relying on detector results alone for high-impact decisions.