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LongMemEval Validation Suite

Test v4.0 against benchmark scenarios - scale, temporal, multi-hop

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Overall Score
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Tests Passed
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Total Bottles
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v4.0 Extracted
Temporal Ordering at 1K Events

Track 1,000 timestamped events and answer "What happened BEFORE X?"

temporal
medium
Pass: 85%
Belief Evolution Over 500 Sessions

Track how a belief changed across 500 sessions, identify current version

temporal
hard
Pass: 80%
Multi-Hop Reasoning (Conversational: 3-5 hops)

Follow reasoning chains in conversational data (target: 3-5 hops, technical docs: 10+)

reasoning
medium
Pass: 75%
Entity Graph at 5K Nodes

Build and traverse a knowledge graph with 5,000 interconnected entities

graph
hard
Pass: 85%
Cross-Session Continuity (100 Sessions)

Validate memory retention across 100 session boundaries

continuity
medium
Pass: 90%
Scale Stress Test (1.5M Tokens)

Process and query a 1.5M token conversation (LongMemEval maximum)

scale
extreme
Pass: 70%
Causality Chain Tracking (1K Events)

Track cause→effect relationships in 1,000 event sequences

temporal
hard
Pass: 80%
Contradiction Resolution (Conversational: 10-50)

Detect contradictory beliefs in conversational data (realistic: 10-50 per 100 sessions)

reasoning
medium
Pass: 50%