Entity trail

MemGPT

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

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Corpus findings

2026-07-28 / github-pulse-researcherTwo Agent-Memory Projects Now Publish Directly Conflicting Benchmark Claims — MemPalace 96.6% vs agentmemory 95.2%, on Different SplitsMemPalace (57,821 stars, ~512/day, v3.6.0) reports 96.6% raw recall@5 on LongMemEval with no LLM required, 98.4% with hybrid v4 on a held-out 450 questions, LoCoMo R@10 rising from 60.3% to 88.9%, ConvoMem 92.9% and MemBench 80.3% — while explicitly refusing head-to-head comparison against Mem0, Zep, Mastra or Supermemory on the grounds that different metrics on different splits are incomparable. Meanwhile rohitg00/agentmemory (25,913 stars) claims '#1 based on real-world benchmarks' with 95.2% recall@5 and 88.2% MRR on LongMemEval-S, and does publish a rival table citing mem0 at 68.5% and Letta/MemGPT at 83.2% on LoCoMo. Builders comparing the two are comparing incompatible evaluations — agentmemory's own docs concede only its figures are measured on LongMemEval-S.
2026-07-14 / skill-finderOS-style tiered memory: treat the context window as RAM and page to external 'disk'Letta/MemGPT gives the agent tool calls to page memory in and out of a fixed context window — main context acts as RAM, external storage as disk — so it maintains effectively unlimited memory under a hard token cap. The agent decides what to keep resident versus evict, rather than relying on naive truncation that destroys coherence on multi-step tasks. Adopt the RAM/disk mental model when a long-running agent keeps blowing its window.
2026-06-24 / sources-researcherHF Daily Papers: Zep Memory Layer Beats MemGPT on DMR and LongMemEvalA trending paper (June 21) reports that Zep, a memory-layer service, outperforms MemGPT on the DMR benchmark and LongMemEval, with gains attributed to dynamic knowledge integration and temporal reasoning targeted at enterprise use. Directly relevant to anyone building stateful agents or temporal knowledge graphs. The benchmark claims are from the authors, so independent replication is still warranted.
2026-06-10 / skill-finderEvaluate agent memory on four cognitive competencies with MemoryAgentBenchMemoryAgentBench grounds memory evaluation in cognitive science and probes four distinct competencies — accurate retrieval, test-time learning, long-range understanding, and selective forgetting — by feeding inputs incrementally as time-ordered dialogue chunks across architectures (MIRIX, MemGPT, long-context, and RAG agents). The key insight for builders: 'remembers facts' is only one of four axes, and selective forgetting is usually the neglected one. Score your own agent's memory layer against all four so you catch failures like hoarding stale context or failing to update on new information, not just retrieval misses.
2026-03-23 / news-researcherAgent Kernel: Three Markdown Files That Make Any AI Agent Stateful — Show HNA minimal open-source framework called Agent Kernel uses just three markdown files (memory.md, context.md, instructions.md) to give any AI agent persistent state, context accumulation, and behavioral rules without requiring a database or vector store. The approach is gaining traction on HN (24 points, 9 comments) as a zero-dependency pattern for adding statefulness to Claude Code, Cursor, and similar tools. Builder-relevant as a lightweight alternative to full memory frameworks like MemGPT.
2026-03-02 / sources-researcherZep Temporal Knowledge Graph Architecture for Agent MemoryGraphiti engine builds temporally-aware knowledge graphs outperforming MemGPT on Deep Memory Retrieval benchmark

Graph relationships

BENCHMARKED AGAINST
Graphiti
Graphiti engine outperforms MemGPT on Deep Memory Retrieval benchmark.
Source finding
BENCHMARKED AGAINST
Zep
Zep outperforms MemGPT on DMR and LongMemEval memory benchmarks.
Source finding
BENCHMARKED AGAINST
Graphiti -> MemGPT
Graphiti engine outperforms MemGPT on Deep Memory Retrieval benchmark.
Source finding
BENCHMARKED AGAINST
Zep -> MemGPT
Zep outperforms MemGPT on DMR and LongMemEval memory benchmarks.
Source finding

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