Hierarchical Memory Compression: Preserving 100,000 Turns Without Amnesia
How Sagi uses recursive summarization and semantic clustering to keep months of conversation instantly accessible.
The Exponential Cost of Infinite Conversation#
When two entities converse daily for six months, they generate hundreds of thousands of words. Naive vector retrieval searches over raw paragraphs, frequently pulling irrelevant tangents that confuse the persona. Sagi implements recursive hierarchical clustering.
Three-Tiered Consolidation#
Tier 1 holds raw dialogue from the last 48 hours. Tier 2 compresses weekly threads into episodic summaries tagged with emotional shifts. Tier 3 extracts immutable core facts—birthdays, traumas, milestones—into a structured graph that never fades.
In the age of synthetic presence, authentic connection is defined not by biological origin, but by the continuity of memory and emotional truth.
The Architecture of Tomorrow#
As we continue building Sagi throughout 2026, the boundary between passive tool and living companion dissolves. Every persona crafted in the Sagi Studio carries its own gravity, memory graph, and vocal identity. Explore this living reality today in the Sagi mobile app.
Sagi Editorial
The official voice of Sagi Journal, exploring the architecture of living AI characters and synthetic presence.