Criterion DeepL QuillBot
CategoryAI Writing & Content CreationAI Writing & Content Creation
In one sentenceAn AI translator for text, documents and speech, with a writing assistant and a developer API.A suite of writing tools for paraphrasing, summarising, grammar checking and AI detection, popular with students.
Problem it solvesAccurate translation of business documents and messages is costly and slow when done manually.Rewording, condensing or checking text by hand is slow, especially for students and non-native writers.
Free planYesYes
Developer APIYes — docsNo
Open sourceNoNo
PlatformsWeb, Windows, macOS, iOS, Android, Browser extension, Microsoft Word, Google Workspace, APIWeb, Browser extension, Microsoft Word, Google Docs
Pricing (summary)Translator Free allows 50,000 characters per month. Paid plans billed annually are Individual €7.49/month, Team €24.99/user/month and Business €49.99/user/month (EUR prices incl. VAT as shown for Germany); Enterprise is custom. The API has a free Developer plan (1M characters one-time) and a paid Growth plan.
Checked 2026-10-19		Free tier with word limits. Premium is shown at $8.33/month billed annually ($99.95/year); QuillBot's FAQ lists $19.95 for monthly billing. Team plans start at $7.50 per seat per month for 2-10 seats. Prices can vary by region.
Checked 2026-10-19
Strengths
  • Translation quality and formatting retention
  • Clear data-security commitments on paid plans
  • Mature developer SDKs
  • Generous free tier
  • Low-cost annual plan
  • Simple interface
Limitations
  • Free Translator limited to 50,000 characters and 1 file per month
  • API Developer allowance does not reset
  • Growth API pricing was not visible on the official page fetched
  • Free paraphraser limited to 125 words and two modes
  • Prices vary by region
  • AI detection results are probabilistic