THE
CHARACTER
ENGINE
Model-agnostic infrastructure for AI characters with persistent memory, evolving personality, and proactive behavior. Bring your own LLM — deploy on mobile, game engines, messaging, or API.
BELIEVABLE AI CHARACTERS AT SCALE
Model-agnostic infrastructure for AI characters that truly exist. Persistent memory. Proactive behavior. Evolving personality. Bring your own LLM — already powering Pocket Souls, now available for your product.
CORE CAPABILITIES
Developer infrastructure for AI characters with genuine depth. Six production-grade capabilities powering Pocket Souls — and ready for your product.
Persistent Memory
Unlimited recallUnlimited recall across every session
Emotional Modeling
48 affect dimensionsReal-time affect across 48 dimensions
Adaptive Personality
Big Five + custom traitsBig Five traits shape every response
Proactive Behavior
Autonomous actionsCharacters initiate, not just respond
Sub-200ms Retrieval
<200ms p95Full context in under 200ms p95
7-Layer Context Engine
7 parallel layersSeven parallel context layers per response
PRODUCTS
ANNOUNCEMENTS
Introducing the Character Engine
2026.03Model-agnostic character infrastructure that gives any LLM persistent memory, evolving personality, and autonomous behavior.
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Pocket Souls is Live on Android
2025.06Our flagship AI companion app is now available on Android. Meet Souls that remember you, check in on you, and grow alongside your journey.
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Sonzai CEO Ryan Foo Will Speak at Consensus HK
2025.02Join our CEO Ryan Foo at Consensus HK 2025 as he shares insights on the future of AI, gaming, and web3.
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