SigPhi
The artificial intelligence that answers questions about philosophy from the original texts
Primary sources · Verifiable citations
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What SigPhi is
SigPhi is an artificial intelligence for philosophy 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.
Every answer cites the passage it comes from, and you can open it and read it in full. Still in beta: it gets things wrong now and then.
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.