LongMem vs the alternatives

An honest comparison. Every LongMem claim below is something we can show — the graph-memory advantage is from a reproducible eval, not a slogan. Where we can't verify a competitor's current behaviour, we say so rather than guess.

Capability	LongMem	Supermemory	Mem0	Plain vector DB
Graph memory — new facts supersede contradicted ones (current truth)	benchmarked	see vendor	see vendor
Hybrid search (vector + full-text, RRF-fused) by default		see vendor	see vendor	vector only
EU hosting (Germany / Hetzner)		see vendor	see vendor	you choose
Self-host + bring-your-own storage / DB / LLM		see vendor	OSS + cloud
GDPR self-service: full export + one-call erasure		see vendor	see vendor	DIY
MCP endpoint + SDKs + LangChain / Vercel AI adapters		see vendor	SDKs
Multi-agent shared memory — per-agent identities, provenance, per-collection access control		see vendor	see vendor
Managed connectors — server-side sync (Slack, Notion, Google Drive, Linear, Confluence, Gmail, HubSpot) with OAuth		see vendor	see vendor
Privacy-first analytics (cookieless, no banner)		see vendor	see vendor	n/a
Free tier	$0, no card	see vendor	OSS free	infra cost
Paid tier (comparable limits)	$12/mo	$19/mo	see vendor	infra cost

"See vendor" means we won't assert a competitor's current behaviour we haven't verified — check their docs. The Supermemory $19/mo figure is the comparable-tier price we reference on our pricing; verify current pricing with each vendor.

Where LongMem is differentiated

Current truth, not just recall. Graph supersession means a contradicted fact stops surfacing. In our reproducible eval (3 scenarios, 28 queries) this cut the contradiction rate to ~43% vs ~89% for a plain RAG store on the same data — recall was similar, so the win is keeping memory current, not better retrieval.
Built for teams of agents. Each agent gets its own identity, every memory records who wrote it, and shared collections carry per-agent read/write grants — so many agents can safely work one memory. Memory also keeps itself current: dedup, contradiction surfacing, and pinning. Most tools assume a single assistant.
EU + self-host + BYO. Hosted in Germany, fully self-hostable, and you can keep storage, database, and even the extraction LLM on your own infrastructure.
Privacy by default. Cookieless analytics, per-tenant row-level isolation, self-service GDPR export and erasure, a published DPA.

Where something else may fit better

If you want a large managed US-hosted platform with a big ecosystem, or you only need a raw vector index with no memory semantics, another tool may suit you more. LongMem is the right pick when current-truth memory, EU data residency / self-hosting, and privacy matter. We'd rather you choose well than oversell.

Get a free key (no card) · Migrate to LongMem · See the eval · Read the docs