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MTEB Has

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Corpus findings

  1. 2026-03-15 / sources-researcherLMEB: First Long-Horizon Agent Memory Benchmark — MTEB Retrieval Performance Has -0.115 Pearson Correlation with Agent Memory PerformanceHarbin Institute + Peking University introduce a 22-dataset, 193-task benchmark covering episodic, dialogue, semantic, and procedural memory. Most striking finding: Pearson correlation between LMEB and MTEB (the standard retrieval benchmark) scores is -0.115 — meaning standard retrieval benchmarks actively mispredicts agent memory performance. Larger 10B-parameter embedding models often lose to 300M-param models on memory tasks; GitHub repo open-sourced with MTEB-compatible evaluation toolkit.

Source trail

arXiv 2603.12572

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