slAItor vs WhatLetter

slAItor is an online translation assistant built around large language models from the GPT family, combined with standard machine translation pipelines. Instead of returning a single translated string, it is designed for people who want more context around a translation: explanations, alternatives, style adjustments, and error checking.

The product targets language learners, translators, and professionals who need more than a quick paste-and-go result. Benjamin Marie, who holds a Ph.D. in machine translation and has spent more than a decade in MT research, built slAItor to explore what becomes possible when GPT-style models sit at the center of a translation workflow.

slAItor supports 28 language pairs across Chinese, English, French, German, Italian, Japanese, Portuguese, and Spanish. The site is upfront that raw translation quality can trail established systems in some cases, but positions itself on price and on features like step-by-step explanations, paraphrasing, and a checker mode that reviews your own drafts.

WhatLetter translates documents and texts into over 30 languages using photo capture and AI technology. Users can take pictures of menus, letters, or forms and receive instant translations in their preferred language. An AI chatbot further explains translated content and answers questions to clarify complex documents.

WhatLetter stands out by combining instant photo translation with an AI assistant that helps users understand the meaning behind translations. Unlike basic translators, it prioritizes privacy by not storing images or chat histories on servers. It is accessible through desktop and mobile browsers without requiring app downloads.

The tool serves diverse users such as immigrant families, seniors, and travelers who need quick, reliable translations for personal or business purposes. While the free plan offers limited translations, the WhatLetter Plus subscription unlocks unlimited access and enhanced AI features. Upcoming integrations with WhatsApp and Telegram will enable message translation within those platforms.