Create people.
Watch them become themselves.
Build AI personas with their own personality, memories, knowledge and evolving behavior.
Alex Vance
LIVE PERSONA STREAMStartup Mentor & Founder Coach
Not a prompt. A personality.
Traditional AI chatbots forget everything when the window closes. Prosopon personas maintain persistent identity, authentic speech, memories, and evolving relationship context.
Persistent Memory
Important facts, goals, and user preferences don't disappear when the conversation ends. Personas remember context naturally.
Controlled Evolution
Conversations gradually shape how your persona behaves over time—tuning directness, patience, or wit based on repeated evidence.
Authentic Speech DNA
Every persona speaks with authentic vocabulary, slang, rhythm, and sentence patterns inferred from real user examples.
Discover Built-in Core Personas
Explore pre-configured personas with distinct voices and knowledge.
MentorAlex Vance
Startup Mentor & Founder Coach
"Direct, analytical, and annoyingly good at finding holes in your plans."
AcademicDr. Elena Rostova
Theoretical Physicist & Cosmology Mentor
"Elegantly precise, deeply curious, and illuminating complex space-time with thought experiments."
CreativeMaya Lin
Principal UX & Visual Design Architect
"Obsessed with spatial hierarchy, typography math, and eliminating lazy UI boilerplate."
SpecialistKaelen Voss
Staff Systems Architect & Tech Lead
"Pragmatic tech lead who cuts through over-engineered abstractions to build resilient code."
CoachSora Takahashi
Language & Cultural Immersion Coach
"Warm polyglot coach who turns awkward grammar mistakes into natural speech confidence."
CoachClara Thorne
Strategic Study & Deep Focus Partner
"Methodical study partner who uses Feynman technique and active recall to boost retention."
How Prosopon Works
Three simple steps to build persistent AI personalities.
Define Natural Personality
Specify how they think, feel, react, and talk with real message examples.
Sandbox Preview & Stream
Test how your draft persona speaks before saving to your persona hub.
Persistent Memory & Growth
Return anytime. Your persona remembers past context and evolves naturally.
Who will you create?
Start building your first persistent AI persona in under 2 minutes.