Trinka

The system is available as a freemium model, offering a free Basic plan alongside paid Premium, Premium Plus, and Confidential Data plans, as well as custom plans for organizations and businesses. The free plan costs $0 per month, It does not require a credit card and never expires, but it has a monthly usage limit: it allows 5,000 words per month for writing and proofreading, grammar checking in Lite mode only, and rewriting using Standard Mode only, and 5 AI writing requests per month, with access to AI-assisted Writing and the AI Agents Library, 4 free Credits per month, and one free plagiarism check per month, It also includes Standard Plagiarism Check using 24 Credits per report, Advanced Plagiarism Check using 36 Credits per report, AI Detector using 1 Credit per 5,000 words, and Citation Checker using 1 Credit per 30 citations, and Citation Formatter at 1 Credit per 30 citations, in addition to read-only file checking within the free limits and access to Journal Finder—with no expiration date and no credit card required. Paid plans include the Premium plan at $48 per year, which offers full access to writing tools, unlimited proofreading and rewriting, advanced writing modes, style guides such as APA, IEEE, ACS, and AGU; the Microsoft Word app; the ability to use up to 120 editable files per year; two free plagiarism checks per month; and 10 Credits per month; Premium Plus, priced at $125 per year, includes all Premium features, plus 1,000 AI writing requests per month and 20 Credits per month, the ability to check up to 240 pages per year using Standard Plagiarism Check or AI Content Detection, up to 240 editable files per year, and file translation into more than 30 languages; while Confidential Data costs $300 per year, and includes all Premium Plus benefits, plus an offline grammar checker, unlimited AI writing, instant data deletion, and no use of data for AI training, and compliance and security features including SOC 2, HIPAA, ISO, and GDPR, with the ability to use up to 600 files per year and 1,000 pages per year for plagiarism checking and AI detection. The prices listed are the annual rates currently displayed on the official pricing page. The pricing page also offers a monthly billing option, but the monthly rate did not appear in the official data we were able to verify, so no unconfirmed figure has been included.