Mnemoverse vs Zep
Mnemoverse vs Zep
Statistical-learning memory vs a temporal knowledge graph — compared honestly.
Short answer: pick Mnemoverse when you want one persistent memory shared across every AI tool — Claude Code, Cursor, VS Code, ChatGPT, Python — behind a single API key, with recall that learns from outcomes. Pick Zep when your central need is tracking facts that change over time: it's built on Graphiti, a temporal knowledge graph where every fact knows when it became true and when it was superseded. Both are sound — they're tuned for different questions.
Side by side
Where they differ
| Mnemoverse | Zep | |
|---|---|---|
| What it is | A persistent memory API — one memory, reachable from every supported tool | A memory service built on Graphiti, an open-source temporal knowledge graph |
| Core model | Hebbian concept associations + Rescorla-Wagner update + outcome valence | Temporal knowledge graph — entities, relationships, and validity windows |
| Best at | Cross-tool recall that improves from how memories are actually used | Tracking facts that change over time, with when-it-was-true history |
| Cross-tool reach | One API key across Claude Code, Cursor, VS Code, Windsurf, ChatGPT, Python, REST | API/SDK and an MCP server you connect to your agents |
| Learns from outcomes | Yes — reported outcomes re-rank future recall | Graph captures temporal facts; ranking is graph- and recency-based |
| Forgetting / compression | HDBSCAN consolidation + Von Restorff protection | Supersedes facts by invalidating older ones as the graph updates |
| Free to start | 1,000 queries/day, 10,000 atoms, no credit card — self-serve | Graphiti is open source to self-host; cloud free tier (1,000 credits/mo), paid from $125/mo |
| Published research | SLoD framework on arXiv (GRAAI workshop, IEEE WCCI 2026) | Zep temporal-KG architecture paper on arXiv (arXiv:2501.13956) |
Mnemoverse's edge is cross-tool portability from one key and memory that re-ranks itself from outcomes. Zep's edge is an explicit temporal graph that models how facts change over time.
Honest take
When to choose which
Choose Zep when…
- You need to track facts that change over time, with explicit valid-from / valid-to history.
- A queryable knowledge graph of entities and relationships is central to your application.
- You want to self-host the open-source Graphiti engine, or need its enterprise compliance options.
Choose Mnemoverse when…
- You want one memory shared across many tools — write in Claude Code, recall in ChatGPT — with a single API key.
- You want recall that improves from outcome feedback rather than only modeling fact validity over time.
- You want a managed service with a no-credit-card free tier and published research (SLoD on arXiv) behind the mechanism.
Questions
Mnemoverse vs Zep FAQ
They answer different questions. Choose Mnemoverse for one persistent memory shared across many AI tools behind a single API key, with recall that improves from outcome feedback. Choose Zep when your core need is tracking facts that change over time — a temporal knowledge graph where each fact knows when it became true and when it was superseded.
Zep is built on Graphiti, an open-source engine that turns conversations and business data into a graph of entities and relationships where each fact carries a validity window. As facts change, older ones are invalidated, so the graph reflects what is true now and when it changed.
Mnemoverse ranks recall with recency as one signal and consolidates older memories, but its core model is statistical learning — Hebbian associations tuned by outcomes — rather than an explicit time-validity graph. If formal valid-from / valid-to fact histories are central to your use case, Zep is purpose-built for that.
Yes — 1,000 queries/day, 10,000 atoms, and 60 requests/minute with no credit card. Pro is $29/mo. Sign up at console.mnemoverse.com.
One memory. Every AI tool.
Try the free tier — 1,000 queries a day, 10,000 memories, no credit card — and see how recall improves with use.