Remnic vs mem0.
Both give agents durable memory. They disagree about where that memory should live, who should be able to read it, and what happens when it is wrong.
What mem0 is
mem0 is a memory API with an open-source core and a hosted cloud product. Your application calls ADD, UPDATE, DELETE, and SEARCH style operations, and mem0 manages storage and retrieval behind the API. A graph variant adds entity relationships. It is a reasonable choice if you want memory as a managed service and are comfortable sending conversation content to a third party.
Where mem0 wins
- Managed hosting: no daemon, no ops, nothing to run yourself.
- A polished SDK story for app developers embedding memory in their own products.
- A commercial vendor with support contracts, if that is what your organization needs.
Where Remnic differs
- Your files, your machine. Every memory is a markdown file with YAML frontmatter on your own disk. You can grep it, diff it, edit it, and version-control it. There is no per-call pricing and no vendor holding your context.
- One store, every agent. Native plugins for Claude Code, Codex CLI, Pi Coding Agent, Hermes, and OpenClaw, plus MCP for Cursor and every other client. mem0 gives your application a memory; Remnic gives every tool you use the same one.
- Correction is measured. Remnic publishes MemCorrect, a benchmark for what happens after a correction: does it stick, does the old fact resurrect on re-ingest, does neighboring memory survive. mem0 does not publish numbers on those axes. See the benchmarks page.
- Free forever. MIT licensed. No tiers.
Switching
Remnic ships an importer that pulls your memories out of mem0 through its REST API, with pagination and rate-limit controls, and lands them as provenance-tagged local files:
remnic import --adapter mem0Details on the migration page.