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Long-term memory evaluation on LongMemEval-S Full-500 official protocol
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47.7
Mean Accuracy
zenbrain
31.164
35.457
39.75
44.043
Apr 26, 2026
Mean Accuracy
SS Accuracy (User)
SS Accuracy (Assistant)
SS Preference Score
Multi-Session Accuracy
Knowledge Update (KU)
Temporal Reasoning Accuracy
Updated 1mo ago
Evaluation Results
Method
Method
Links
Mean Accuracy
SS Accuracy (User)
SS Accuracy (Assistant)
SS Preference Score
Multi-Session Accuracy
Knowledge Update (KU)
Temporal Reasoning Accuracy
zenbrain
Retrieval Budget=k=5,...
2026.04
47.7
79.5
85.7
22.2
34.8
56.8
28.1
letta
Retrieval Budget=k=5,...
2026.04
42.8
77.1
76.8
16.7
30.1
50
24.8
a-mem
Retrieval Budget=k=5,...
2026.04
35.4
67.1
51.8
10
24.8
56.4
15.8
mem0
Retrieval Budget=k=5,...
2026.04
31.8
64.3
76.8
10
19.5
25.6
16.5
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