hmem: benchmarking the memory providers fighting for your agent's long-term recall

Tue, 04 Aug 2026 00:00:00 +0000

Every agent framework eventually hits the same wall: the context window ends and the conversation forgets. The memory-provider ecosystem that sprang up to fix this is large, fast-moving, and mostly unmeasured — a lot of READMEs, few numbers. hmem is my attempt to bring order: a living comparison of fifteen providers compatible with Hermes Agent, from 62K-star mem0 down to single-file SQLite curiosities.

The part that separates it from a link list is the benchmark discipline. Providers only get scores when a real measured adapter exists — Hindsight and Mnemosyne are listed as “not measured” precisely because their simulated stubs were excluded. The current controlled run compares BM25 lexical baseline (0.367 correctness) against Hermes built-in memory (0.333) over 30 reviewed scenarios in 10 categories across three isolated runs: 180 result documents, zero failures, machine-readable JSON published alongside the writeup.

Memory on AiSlackin

hmem: benchmarking the memory providers fighting for your agent's long-term recall