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R3Mem

by HKUST (2025)

System Card

OrganizationHKUST (2025)
Released2025-02
Architecturekv-cache-extension / Reversible hierarchical context compression
DetailsVirtual memory tokens compress text hierarchically at document/paragraph/entity levels. A reversible architecture (adapter-tuned on a frozen Transformer) reconstructs raw input by inverting the compression for retrieval.
Parameters—
Domainlong-contextagent-memory
Open SourceNo
PaperView Paper
acl-2025reversiblevirtual-tokenshierarchical

Capability Profile

Benchmark Scores

6 of 14 benchmarks
Data Transparency:6 estimated
Long-Context Retrieval
2/5
RULER
no data
NIAH
no data
LooGLE
no data
LongBench
603pEstimated
∞Bench
81.975pEstimated
Multi-Turn Recall
1/2
LoCoMo
62.314pEstimated
MemoryBank
no data
Cross-Session Memory
0/1
LongMemEval
no data
Multi-Hop QA
2/3
BABILong
75.856pEstimated
MultiHop-RAG
no data
HotpotQA
60.312pEstimated
Agent Task Memory
1/1
AgentBench-Mem
59.23pEstimated
Personalization
0/1
PerLTQA
no data
Factuality / Grounding
0/1
RAGAS
no data
Sources:Arena estimate — derived from capability profile, not independently verified