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Welcome to SeanceAI

Step into a digital séance and converse with the greatest minds humanity has ever known. From Einstein’s thought experiments to Cleopatra’s political wisdom, from da Vinci’s boundless curiosity to Lincoln’s moral clarity—experience history through authentic, AI-powered conversations.
SeanceAI isn’t just another chatbot. It’s a meticulously crafted experience that brings history to life through authentic roleplay, era-appropriate knowledge, and genuine personality.

Two Unique Conversation Modes

Seance Mode

Have intimate, one-on-one conversations with legendary figures. Ask Einstein about relativity, discuss philosophy with Socrates, or learn about ancient Egypt from Cleopatra herself.

Dinner Party Mode

Invite 2-5 historical figures to the same conversation. Watch as Einstein debates with Newton, or witness Cleopatra and Caesar discuss strategy. Each guest responds authentically, creating dynamic multi-perspective dialogues.

What Makes SeanceAI Special?

Authentic Historical Personas

Each historical figure speaks in their unique voice with carefully crafted personalities:
  • Unique personality traits and speaking styles specific to each figure
  • Era-appropriate knowledge - figures don’t know about events after their death
  • Genuine reactions to modern concepts (they’ll ask you to explain!)
  • Historical accuracy with references to real experiences, works, and relationships

60+ Historical Figures Across Eras

Ancient World

Cleopatra, Caesar, Socrates, Archimedes, Aristotle

Renaissance

Leonardo da Vinci, Galileo, Copernicus

19th Century

Lincoln, Darwin, Tesla, Curie, Napoleon

Modern Era

Einstein, Turing, Hawking, Feynman, Sagan

Immersive Experience

  • Museum-themed interface with elegant dark UI and gold accents
  • Beautiful SVG portraits for every historical figure
  • Smooth animations and thoughtful interactions
  • Fully responsive - works beautifully on desktop, tablet, and mobile

Smart Features

Contextual Suggestions

AI-generated follow-up questions based on your conversation

Save & Resume

Bookmark favorite conversations and return anytime

Export Options

Download conversations as text files

Technology Stack

Backend
  • Python 3.11+ with Flask
  • OpenRouter API for multi-model AI access
  • Server-Sent Events (SSE) for streaming responses
  • Intelligent retry logic with automatic model fallback
Frontend
  • Vanilla JavaScript (no framework dependencies)
  • Modern CSS with custom properties
  • LocalStorage for conversation persistence
AI Models
  • Swift tier: Gemma 3, Llama 3.3 70B (free models)
  • Balanced tier: GPT-4o Mini, Claude 3.5 Haiku, DeepSeek V3
  • Advanced tier: GPT-4o, Claude Sonnet 4, Gemini 2.5 Pro
This is an educational entertainment tool. While we strive for historical accuracy in personalities and knowledge, the AI responses are generated and should not be used as primary historical sources.

Ready to Start?

Follow the quickstart guide to get SeanceAI running in minutes, or explore the features to learn more about what you can do.

Build docs developers (and LLMs) love