SigPhi
The artificial intelligence that answers philosophy from the original texts
Answers ONLY from primary public-domain philosophical and religious texts, with verifiable citations. Beta: answers may not yet be optimal.
Φιλοσοφία
Ask about any thinker, tradition or idea. Answers come only from primary sources, with citations.
What SigPhi is
SigPhi is a philosophy artificial intelligence that answers only from original philosophical and religious texts in the public domain. It gives no opinions or advice: it shows you what the works say, and where they say it.
Where the texts come from
The corpus gathers public-domain editions from Project Gutenberg, Wikisource and the Internet Archive, across dozens of traditions: Greek and modern philosophy, sacred texts, political and religious thought.
Why this is not just another chatbot
Every claim is linked to the exact passage that supports it, and you can read that passage in full in the Library. If the corpus does not cover a question, SigPhi says so instead of making something up.