Mem0 vs Supermemory vs OzBrain
Updated
The short answer
OzBrain is a brain you connect to agents you already use: Claude, ChatGPT, Claude Code, and Cursor read and write it through one connector, and you can share it with the people you work with. Mem0 and Supermemory are memory APIs: infrastructure you build into an AI product you are shipping. Building an app whose users need memory? Take an API. Running your own work through agents? You need a brain, and an SDK was never the missing piece.
The first question is which side of that line you are on, and it decides everything downstream: pricing, integration, and what the thing actually stores.
Free plan includes 50 articles. No SDK, one sign-in.
Side by side
| Dimension | OzBrain | Mem0 / Supermemory |
|---|---|---|
| Who it is for | People running work through agents | Developers building products |
| Integration | Connector menu, one sign-in | SDKs and API calls |
| What it stores | Linked articles, routing index | Fragments, vectors, graphs |
| ContradictionsSurfaced for a recorded resolution, or handled invisibly inside the engine. | Surfaced and resolved on record | Inside the engine |
| SharingA grant puts the brain behind another person’s agents. | People and their agents | Your app decides |
| Pricing unit | Brain size, unlimited use | Per operation |
Infrastructure for your app, or a brain for your work
A memory API stores extracted fragments. Your application sends it conversations, it pulls out facts, and it serves them back through add and search calls. It is developer infrastructure: priced per operation, tuned in code, and serving your end users rather than you.
OzBrain has nothing to build. You add a connector in Claude or ChatGPT, sign in once, and the brain sits behind every agent you use: structured articles rather than fragments, found through a routing index, written through staged writes with contradiction checks and provenance. Grant a cofounder or collaborator access and it sits behind their agents too, with every write attributed to whoever made it.
The tell is the unit of value. Memory APIs price adds and searches, because operations are what they sell. OzBrain prices brain size and leaves reads and writes unlimited, because an always-on brain shared by your agents and your people is the point.
Memory for the work you run through agents, without a build project.
Skip the SDKThe APIs are good at being APIs
Mem0 is the established layer: open source under Apache 2.0, self-hostable, explicit memory items your code can inspect and tune, graph memory on higher tiers, and the most integrations and largest community in the category. For lifecycle control over memory inside your product, it is the default choice for a reason.
Supermemory is the speed play: one cloud API covering ingestion, extraction, and recall, retrieval fast enough for a request path, and built-in connectors for Drive, Gmail, Notion, and GitHub. When shipping quickly matters more than owning the stack, that is its case.
Setup is a menu, not a sprint
There is no integration to plan. Add OzBrain from the connector menu in Claude or ChatGPT, approve it once, and connect your editor with one command. Your agents start reading the routing index and staging writes in the same session.
If you have been prototyping your own memory layer for personal use, ask your agent to stage what it holds into the brain and retire the prototype. The stack you were about to build is the product.
Ship your app on an API. Run your work on a brain.
The two are not rivals so much as different aisles, and plenty of people need both: a memory API inside the product they sell, and a brain behind the agents they work with every day.
The brain side of that split takes two minutes to stand up. Free starts at 50 articles; sharing ships with Pro and Max.
Common questions
Both ship MCP servers. Is that not the same thing?
They expose add and search over fragments to clients you configure. OzBrain’s connector exposes a brain: a routing index, scoped article reads, staged writes with contradiction checks. The protocol is shared; what stands behind it is not.
Could I build OzBrain on top of Mem0?
Roughly, after adding a schema, a routing index, staged writes, conflict detection, provenance, continuous maintenance as designed behavior, sharing with per-author provenance, and hosting. That stack is the product. If building it sounds like fun, the gist that inspired us is linked on the homepage.
Does OzBrain have an API?
The connector is the API: any client that speaks the protocol can hold the brain, which already includes Claude, ChatGPT, Claude Code, and Cursor. There is no separate SDK because the target is agents you already use, and they already speak it.
Can a small team use OzBrain instead of building shared memory?
Yes. One brain with grants for each account puts the same knowledge behind everyone’s agents, with writes checked and attributed. For a team that runs work through agents rather than shipping a memory feature, that replaces the build entirely.