Comparisons
Compare Oh
Oh is open-source memory for agents: linked records in one local SQLite file, each fact keeping the sources behind it and every change in a history you can replay. These pages compare it with other memory systems, naming a dated source for each outside claim and a checked-in document for each Oh claim.
Oh vs Mem0
Mem0 is a memory layer for applications: its add call distills messages into facts scoped by user_id, so a product can remember each of its end users, either on the hosted Platform or through the self-hosted Apache-2.0 SDK. Oh keeps an agent’s own working memory instead, with source links on every fact. The page includes the repository’s one matched run so far, a 30-question observation inside a third-party harness that is not a superiority claim.
Oh vs Supermemory
Supermemory is a hosted memory API: connectors sync Google Drive, Gmail, Notion, and more into containers partitioned per user, and usage is metered in credits on paid tiers. The page reports the repository’s matched 60-question LongMemEval-S pilot, where Supermemory scored higher on the headline measure without a statistically clean separation, plus what each system does that the other does not.
Where the numbers come from
Every figure on these pages comes from a checked-in result document in the repository’s benchmarks directory or from the other product’s own documentation, dated where prices and feature lists can drift. The benchmark index lists every published study, and each result links its protocol, costs, and limits.