Best memory for Claude Code in 2026
Five real options exist, and they stack in layers. This is the honest landscape, written by the team that builds one of them, with sources for everything we say about the others.
Competitor details and pricing checked 2026-09-25. Sources at the bottom of this page.
What the field is
The field splits into four groups. Built-in layers: CLAUDE.md and auto memory, which Anthropic documents. Hook packages: systems that capture turns and recall automatically, including ours and others. MCP memory servers: remote memory services any MCP client can call, and Claude Code can too. Open-source local systems: projects like claude-mem that run on your machine and store context locally.
Each group makes a different trade between control, effort, portability, and automatic capture.
What MemoryRouter is
MemoryRouter sits in the hook layer with a cross-tool vault behind it. One command installs recall on UserPromptSubmit, capture on Stop, and re-injection after compaction, resume, and fork. Memory is scoped per project, worktrees of a repository share one memory, and your key stays in your home directory.
The same vault also serves Codex, OpenClaw, editors over MCP, and chat products through connectors, which is the difference between Claude Code memory and your memory.
Side by side
| MemoryRouter | the field | |
|---|---|---|
| CLAUDE.md and auto memory | Built in, free, loaded at startup | Instructions and shallow notes; no capture, no re-injection after compaction |
| Hook packages (MemoryRouter) | One command, automatic every turn | Managed service at $20 per month after a trial; cloud storage |
| claude-mem | Open source, local, Claude-focused | Single tool; you run the worker; no cross-tool vault |
| MCP memory servers (Mem0, Zep, Letta, and others) | Flexible, callable in any MCP client | Model-directed recall; pricing from free tiers to $125+ per month |
| Manual files | Zero cost, total control | Accurate only when a human keeps updating them |
Where the field is the better choice
- You only use Claude Code, want local storage, and are comfortable running open source. claude-mem deserves a look.
- You want a permanent free floor and are building an app: Mem0’s free tier and MCP integration are worth testing.
- You need temporal graph queries for production agents: Zep’s model is built for that.
- Your needs are instructions only: CLAUDE.md is free and works.
Where MemoryRouter fits better
- You want recall and capture to happen automatically on every turn, not when the model decides.
- You want one memory across Claude Code, Codex, your editor, and chat.
- You want a team-shareable project memory with a dashboard where you can see and delete what is stored.
Which one should you use?
Start with files: CLAUDE.md for instructions plus a short decisions log. That covers the first layer for free.
Add a hook layer when you are tired of re-explaining, and choose based on portability: if your memory should outlive one vendor, put it in a vault that more than one tool can read.
One command, three minutes, 14 days free. Full guide on the Claude Code page.
Related
FAQ
Sources
Sources checked 2026-09-25. Tool behavior changes; check the vendor docs before relying on a detail.