A free, multilingual library of the classics

Epoché is a free reading library of the classics and the sciences — philosophy, literature, history, mathematics, natural science, technology and more — with side-by-side translations, text-to-speech and AI study tools. Read thousands of works in the original and in translation, in 14 languages.

Every public work can be read free in the browser, with original-language texts alongside translations, natural text-to-speech narration, and optional AI reading assistance. The collection spans philosophy, literature, history, religion, science and the arts, drawn from the public domain and openly-licensed sources.

Free to read, with an optional paid plan

Epoche sells exactly one product: the Epoche Pro subscription — a recurring digital-service plan for this web application. There are no physical goods, no one-off purchases, and no in-app currency.

Free (no charge). The entire public library of public-domain classics is free to read for everyone, supported by ads. A free account also includes a daily AI-assistant quota and a monthly text-to-speech quota at no charge.

Epoche Pro. Premium AI models for the reading assistant, dictionary and translation tools; higher daily AI limits and a larger monthly text-to-speech quota; 5 GB of storage for your own imports; ad-free reading; and priority support. US$5 per month or US$50 per year (2 months free), billed in US dollars by Stripe with applicable tax added at checkout. Every new subscription starts with a 14-day free trial, renews automatically until cancelled, and can be cancelled at any time from your profile settings.