June 9, 2026
Ghosted by history?
Show HN: Learn from 30 historical figures, open source, nonprofit, self-hosted
A talking history library has fans swooning and critics yelling “digital necromancy”
TLDR: Agora Cosmica lets people chat with AI versions of famous historical figures while promising privacy, openness, and clear labels that these are only recreated voices. Commenters were split between praising its honesty and educational mission, and blasting it as creepy “digital necromancy,” which is exactly why people are paying attention.
A new nonprofit project called Agora Cosmica just dropped onto Show HN with a wildly ambitious pitch: chat with AI versions of 30 historical figures, from Marcus Aurelius to Frida Kahlo, with no signup, no tracking cookies, and a heavy “we’re being honest about what this is” vibe. The creators frame every voice as an AI Echo, not the real person, and even include fact-check pages showing what’s verified history versus creative reconstruction. For some commenters, that transparency was the real star. One fan called it the exact opposite of today’s attention-hungry apps, praising it for nudging people toward actual books and real teachers instead of trapping them inside the app forever.
But of course, this is the internet, so the biggest fireworks came from the backlash. One commenter was absolutely not having it, calling the whole thing “really, really disrespectful” and comparing it to digital necromancy. That instantly turned the project from “cool educational experiment” into “wait, are we resurrecting dead thinkers for content now?” territory. Others kept things lighter: one person immediately asked for Hermann Hesse, while another basically said, “Nice, but can I get this for Swift programming?” Which is maybe the most Hacker News response imaginable: philosophers? cool. But can it help me code?
So the mood is split between “beautiful mission-driven learning tool” and “this is ethically cursed” — with a side of feature requests. In other words: classic comment-section chaos, and very entertaining chaos at that.
Key Points
- •Agora Cosmica is a nonprofit, open-source living library that lets users interact with 30 historical figures through AI conversation and pre-recorded educational content.
- •The platform offers six interaction modes, including four structured chapters—Story, Wisdom, Prism, and Quest—designed around a learning arc informed by education research.
- •Its catalog includes 360 stories, 360 prism dialogues, 110 four-figure council debates, and 360 wisdom teachings spanning 2,500 years of thought.
- •The project explicitly labels each historical portrayal as an AI Echo and provides per-figure fact-checking to distinguish verified history from recreated narrative elements.
- •Live speech is self-hosted on GPU servers in Germany, the app offers 30 free no-signup messages per day, and it emphasizes privacy through limited tracking, BYOK encryption, and disclosed ad-attribution exceptions.