Two-layer memory
Separates stable facts from shared moments across sessions
Eros³
An AI companion product built around persistent memory, relationship state, and character reactions.
AI · Macau, China
What it does
Eros³ is an AI companion and character-interaction product from EtherFun Lab. It uses persistent memory, changing affinity, and character reactions to retain relationship state across sessions.
The team also publishes eros-engine, a Rust project documenting two-layer memory, six-axis affinity, persona decisions, and structured user insight. The official site provides a demo; real-world social features remain in development.
Character chat can forget context, fail to evolve relationships, or drift over time. Eros³ treats memory, relationship state, and response decisions as persistent mechanisms.
Key capabilities
Six-axis relationship state
Models affinity dimensions that shape reactions
Persona decisions
Maintains character logic across actions such as replying or ghosting
Custom characters
Supports personas with persistent identity and memory
Open engine
eros-engine provides a Rust service, documentation, and deployment path
Who it's for
People interested in persistent character relationships and developers building companion products.
Developer and team
EtherFun Lab
Product details
- First published
- Aug 4, 2026
- Category
- AI
- Location
- Macau, China
- Website
- eros3.ai
- Updated
- Sep 8, 2026
Sources
- OfficialOfficial product page
- Public sourceV2EX discussion
- Updated
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