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Grammarly vs Trinka AI

Grammarly or Trinka AI? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.

In short

  • Both: Rewrites, Grammar, Plagiarism check, AI detection, Translation, Browser extension
  • Only Grammarly states: Tone
  • Only Trinka AI states: API

Grammarly

Grammarly checks writing, suggests corrections, rewrites text, and provides AI tools across apps, browsers, desktops, and mobile devices.

Plans

Free

$0

  • Write without mistakes
  • See your writing tone
  • Generate text with 100 AI prompts

Pro

$12

  • Rewrite full sentences with a click
  • Adjust your writing tone with ease
  • Write fluently in English
  • Unlimited personalized suggestions
  • Detect plagiarism and AI generated text
  • Generate text with 2,000 AI prompts

Enterprise

Contact Sales

  • Proactive AI that works everywhere
  • Dedicated support
  • BYOK encryption
  • Custom roles and permissions
  • Data loss prevention
  • Cost center visibility

Prices checked 2026-09-26 on the maker’s page.

Capabilities

  • Rewrites — “Rewrite full sentences with a click” source
  • Grammar — “Instantly find and correct over 400 types of grammatical mistakes.” source
  • Tone — “Adjust your writing tone with ease” source
  • Plagiarism check — “Detect plagiarism from 16 billion web pages and ProQuest's databases.” source
  • AI detection — “Detect plagiarism and AI generated text” source
  • Translation — “translate instantly across 19 languages” source
  • Browser extension — “Grammarly browser extension” source

Latest updates

About Grammarly

Trinka AI

Trinka AI checks and improves academic and technical writing with grammar, paraphrasing, proofreading, citation, plagiarism, and AI detection tools.

Plans

Basic

Free

  • 5,000 words/month
  • Grammar check (Lite Mode Only)
  • 5 requests/month for AI writing
  • 4 free credits/month

Premium

  • $48 annually
  • Access to all writing features
  • All advanced writing modes
  • Up to 120 editable files/year
  • 2 free plagiarism scores/month
  • 10 free credits/month

Premium Plus

  • $125 /year
  • Everything in Premium
  • Double credits and file translation
  • Up to 240 editable files/year
  • 240 pages/year of standard plagiarism check
  • Access to Plagiarism & AI Detector Marketplace
  • 20 free credits/month

Confidential Data

  • $300 annually
  • Everything in Premium Plus
  • Offline Grammar Checker app
  • Unlimited AI writing, instant data deletion, and no AI training
  • Up to 600 editable files/year
  • 1,000 pages/year and 1 advanced report/month
  • 50 free credits/month

Confidential Data

Price on request

  • For teams of 5 or more
  • Zero storage and no AI training
  • Instant data deletion
  • 1,000 pages of standard plagiarism or AI detection/year
  • 50 proofread files or reports/month
  • User access management

Writing Assistance For Teams

Price on request

  • Professional writing solutions for corporate teams
  • Feature customizations
  • Advanced data privacy
  • Usage analytics dashboard
  • API, SDK, and on-premise integrations
  • White labeling

Trinka for Institutions

Price on request

  • Academic integrity and writing assistance
  • DocuMark academic integrity
  • Student and faculty writing assistance
  • Dedicated onboarding and account support
  • LMS and SSO integration

Prices checked 2026-09-25 on the maker’s page.

Capabilities

  • Rewrites — “Trinka has a Paraphrasing Tool that helps you rephrase text while preserving its original meaning, making it easier to improve clarity and readability.” source
  • Grammar — “You can check your grammar online using Trinka AI grammar checker tool .” source
  • Plagiarism check — “The plagiarism checking and reference checking features are really good.” source
  • AI detection — “Yes. Trinka offers a free AI Detector that analyzes text to identify content that may have been generated by AI.” source
  • Translation — “Includes File Translation (30+ languages)” source
  • Browser extension — “Yes. Trinka offers a Microsoft Word add-in and browser extensions that allow you to receive real-time writing suggestions directly as you write, across platforms.” source
  • API — “Grammar Checker API” source

Security

  • SOC 2 Type II — “Trinka is SOC 2 (Type 2) certified, independently verifying that we meet the trust services criteria for security, privacy, availability, and confidentiality.” source
  • SOC 2 — “Trinka is SOC 2 (Type 2) certified, independently verifying that we meet the trust services criteria for security, privacy, availability, and confidentiality.” source
  • ISO 27001 — “Trinka's information security management system is ISO 27001 certified, meeting rigorous international standards for protecting your data against evolving security threats.” source
  • GDPR — “Trinka is GDPR compliant, honoring your data privacy rights under European regulations.” source
  • HIPAA — “Trinka is HIPAA compliant, ensuring the confidentiality and security of all protected health information (PHI).” source
  • Not trained on your data — “Data of users on our paid plans is not used for any training of our AI models.” source

Latest updates

About Trinka AI