MemoryRouter vs Zep
Zep is infrastructure for teams that want a temporal knowledge graph behind their agents. MemoryRouter is a vault behind the tools you already use. Different entry points, different operations.
Competitor details and pricing checked 2026-09-25. Sources at the bottom of this page.
What Zep is
Zep provides memory and context for agents with a temporal knowledge graph that tracks when facts are true and when they are superseded, plus a Memory MCP server. Published plans are credit based: self-serve Flex is $125 per month with 50,000 credits included (then $25 per 10,000), Flex Plus is $375 per month with 200,000 credits, and there is a free prototyping tier with 10,000 credits per month and limits. Enterprise adds governance, deployment options, and an SLA.
Their strength is temporal reasoning: answering what was true at a point in time, and handling supersession instead of overwriting.
What MemoryRouter is
MemoryRouter stores memories per vault and retrieves them by relevance with semantic search and time windows. It connects to the tools you already use: published hook packages for Claude Code, Codex, and OpenClaw, remote MCP for editors and other clients, custom connectors for Claude and ChatGPT.
Pricing is simpler for an individual: 14 days free, then $20 per month with 200M memory tokens included, unlimited projects, no inference markup.
Side by side
| MemoryRouter | Zep | |
|---|---|---|
| Primary user | Engineering teams putting memory behind agents in production | Individuals and teams using AI tools, plus a developer path |
| Core model | Temporal knowledge graph with fact validity windows | Memory vaults with semantic and time-window retrieval |
| Entry price | $125 per month self-serve, free prototyping tier | $20 per month after a 14-day free trial |
| Billing unit | Credits across operations | 200M memory tokens per month included |
| Cross-tool continuity | MCP server for clients you connect | One vault across coding tools, editors, and chat |
| Deployment | Cloud or your VPC on enterprise plans | Managed service |
Where Zep is the better choice
- You need temporal queries like "what did we believe in March" answered by a graph rather than by ranking.
- You are running production agents where entity relationships matter and you want graph structure.
- You need VPC deployment or an SLA, which their enterprise track exists to provide.
Where MemoryRouter fits better
- You want memory for tools you use today, not infrastructure for a system you are building.
- Your budget for personal or small-team memory is in the tens of dollars, not the hundreds.
- You want one vault that covers a coding agent, an editor, and a chat product at the same time.
Which one should you use?
Zep is a strong choice when graph structure and temporal correctness are requirements you can name, and when a four-figure annual budget is normal for your team.
MemoryRouter is the right call when the pain is practical: sessions that forget, a codebase that needs re-explaining, and a toolchain that spans vendors.
14 days free, then $20 per month. Install for Claude Code or Codex in minutes.
Related
FAQ
Sources
Sources checked 2026-09-25. Tool behavior changes; check the vendor docs before relying on a detail.