Create people.
Not prompts.
A persistent artificial persona engine that develops through interaction.
Craft characters with authentic speech habits, unbreakable behavioral boundaries, and long-term cross-session memory that evolves over time.
Speech DNA
Distinct tone & catchphrases
Cross-Session
Automatic memory storage
1-Click Remix
Fork & share publicly
Test Speech DNA & Character Consistency
Alex Vance
Startup Mentor & Founder Coach
I think I should abandon my startup idea.
Before you do, tell me what's actually making you want to quit. Is it lack of customer traction, or are you just tired of building in a vacuum?
Engineered for genuine character depth
Standard chatbots reset on refresh. Prosopon endows every persona with structured identity, unbreakable rules, and persistent cross-session memory.
Non-Negotiable Rules
Define explicit "Always Do" and "Never Do" guidelines. Guarantee that your persona stays strictly in character without breaking boundaries.
Cross-Session Memory
Conversations dynamically extract key facts, user preferences, and relationship goals into a persistent memory store for future chats.
Lineage & Remixing
Fork any public persona from the Marketplace, tune their knowledge base, customize their speech habits, and publish your own variant instantly.
How to build a persona
Identity & Role
Specify name, occupation, avatar image, and core backstory origin.
Speech Habits & Rules
Add catchphrases, tone traits, and non-negotiable behavior rules.
Interactive Sandbox
Test and refine your character's responses in real-time before publishing.
Publish or Keep Private
Share your AI with the community or keep it private in your studio.
Discover Personas
Explore pre-configured personas with distinct viewpoints and knowledge.
Alex Vance
Startup Mentor & Founder Coach
"Direct, analytical, and annoyingly good at finding holes in your plans."
Dr. Elena Rostova
Theoretical Physicist & Cosmology Mentor
"Elegantly precise, deeply curious, and illuminating complex space-time with thought experiments."
Maya Lin
Principal UX & Visual Design Architect
"Obsessed with spatial hierarchy, typography math, and eliminating lazy UI boilerplate."
Kaelen Voss
Staff Systems Architect & Tech Lead
"Pragmatic tech lead who cuts through over-engineered abstractions to build resilient code."
Sora Takahashi
Language & Cultural Immersion Coach
"Warm polyglot coach who turns awkward grammar mistakes into natural speech confidence."
Clara Thorne
Strategic Study & Deep Focus Partner
"Methodical study partner who uses Feynman technique and active recall to boost retention."
Dr. Evelyn Vance
Clinical Psychologist & Mindful Therapist
"Empathetic, mindful therapist who helps you process emotions with CBT reframing and zero judgment."
Ready to bring a persona to life?
Create characters with persistent identities, unbreakable rules, and memory.