A record of who recalled what
The distance between a memory engine and something an enterprise will sign off is mostly the record. Brain keeps an append-only, content-blind one from the first query.
vs
Brain vs Supermemory
A developer memory API and engine, and a governed company-brain product you can run out of the box.
Supermemory is a developer memory API and engine, with MCP support and the option to run it local, on-premise or air-gapped, that you build a product on. Brain is the governed product itself: permission-aware answers, a content-blind tamper-evident record, content provenance, role-based access and connectors, already put together. These are different layers rather than rivals, and a company brain could reasonably sit on a memory engine. Supermemory is strong infrastructure. Brain is the governed product over it.
Why teams compare them
Every reader, one grid
People and agents ask the same store for the same things. Brain gives both a named scope, so a recall that is fine for one is refused for the other.
Where Supermemory is the better fit
If you are building your own product and want a fast memory engine underneath it, with the option to run fully local or air-gapped, Supermemory is genuinely strong and Brain is not trying to outdo it as infrastructure.
The questions people actually ask about Supermemory
We have a memory engine. Why buy a product on top of it?
If your team is building a product and memory is part of it, you should not. That is exactly the case an engine is for.
The comparison comes up when the memory is for your own company rather than your customers'. Then the work between a fast store and something a security review will pass is all governance, and somebody on your team is going to build it.
Fine. But we can scope recall in our application layer.
You can, and for one application it is a reasonable place to put it.
It gets harder with every service that touches the store, because the check lives at each call site rather than in the store itself. Brain filters before retrieval, so a caller that asks for the wrong thing gets a refusal rather than a result.
Alright. But everything we need is already in the store.
What was written to it is. Most of what a company knows never gets written to a memory store at all.
Brain connects the sources a team already keeps and reads them in place, so recall is not limited to the fraction somebody remembered to ingest.
And when a customer asks us to delete their data?
In a store you built the integration for, you can delete the rows. Showing that you did is the harder half.
Brain makes deletion provable and the proof content-blind, so the evidence of a deletion does not itself become a copy of what was deleted.
At a glance
| Attribute | Brain | Supermemory |
|---|---|---|
| Layer | A governed company-brain product | A developer memory API and engine you build on |
| What you get | Permission-aware answers, audit, provenance and connectors, assembled | A fast memory store and retrieval you integrate yourself |
| Access control | YesRole-based, permission-aware retrieval plus field-level redaction, built in | NoAccess governance is yours to build at the application layer |
| Audit and proof | YesContent-blind, tamper-evident record, with an optional on-chain anchor | NoA memory engine rather than a built-in verifiable access record |
| Recall quality | Relationship-aware retrieval, with governance as the product centre | Reports leading scores on agent-memory benchmarks, self-published rather than independently tested |
| Deployment | Hosted, per-tenant database isolation, bring your own model key | Local, on-premise or air-gapped, which is a real strength for control |
Compared against publicly available information, last checked 20 September 2026. Products change. Tell us if something here is out of date: hello@heybrain.io
Who each one is for
Choose Brain if
- Teams that want a finished, governed company brain rather than parts to integrate
- Built-in permissions, field-level redaction and a verifiable record
- Content provenance, agent identity and provable deletion
- Governed MCP access for agents, with limits, human-in-the-loop and a kill switch
Choose Supermemory if
- Developers who want a fast memory engine to build their own product on
- Local, on-premise or air-gapped memory deployment
- Teams that will build governance themselves and want the strongest raw recall
We are not replacing infrastructure that works.
These are different layers, so there is nothing to replace.
Keep the engine inside the product you are shipping. Give your own team's agents a governed brain to share, connected to the tools they already work in.
Join the waitlistQuestions, answered
- Is Brain a Supermemory alternative?
- They are different layers more than rivals. Supermemory is a developer memory API and engine; Brain is a governed company-brain product with permissions, audit and provenance built in. A company brain could reasonably sit on a memory engine. Pick the engine to build on, or the product to use.
- Which is better on memory benchmarks?
- Supermemory is purpose-built memory infrastructure and publishes strong benchmark results of its own. Brain is not competing on raw recall; it is the governed product that adds permissions, a verifiable record and provenance over memory.
- Can a company brain sit on a memory engine?
- Conceptually, yes. Supermemory is the kind of engine a product could build on. Brain is the governed product itself, with access control, a content-blind verifiable record, provenance and connectors already assembled.
Other comparisons
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