Status: Published. Decision: staying on Holographic for now.

A head-to-head comparison of two SQLite-backed agentic memory systems for Hermes Agent:

• Holographic: Local-first, zero-dependency memory provider with Phase Holographic Reduced Representations (HRR) for compositional retrieval. Unlimited database size, no accounts, no cloud roundtrips.
• Sibyl Memory: Five-tier hierarchical schema (HOT/WARM/COLD/REFERENCE/ARCHIVE) with self-learning, LongMemEval-validated (95.6%), but requires cloud activation and has a 2 MB free cap.

The Verdict

Sibyl wins on features and benchmarks. Holographic wins on operational simplicity — zero external dependencies, unlimited storage, trust-based fact management.

For a system designed around local-first operation from day one, Holographic is the right choice — but we’d love a local-only port of Sibyl’s multi-tier schema.

Full Analysis

Read the full comparison →

Source Files

• Research notes in /Volumes/Mini_1Tb/Projects/research/sibyl_memory/
• Evaluation sources: /Volumes/Mini_1Tb/Projects/research/sibyl_memory_evaluation_sources/