Draw the context boundary first
For a fictional customer launch, list the approved project decision, a customer note and an unrelated confidential contract. Specify which references a reader needs and keep the unrelated contract outside the pilot.
vs
HeyBrain vs Zep
Compare the scope of context you need and the operational ownership behind it.
A project answer may need a conversation, a customer record and a dated decision. Zep’s current documentation covers enterprise context as well as agent memory. Treating it as a single-user chat store understates the product. Consider HeyBrain for a selected reference workflow, then compare the context, identity and evidence requirements of the real task. Neither a graph nor a citation removes the need to check which source supports the answer. Method: primary vendor sources reviewed on 6 October 2026; no hands-on head-to-head benchmark. Diagrams and pilot stories are fictional evaluation examples, not screenshots, customers or measured results.
Why teams compare them
Separate reading from acting
An assistant allowed to read a decision is not automatically allowed to update a customer record. Write separate acceptance checks for context retrieval and source-system actions. Avoid introducing write access just to test a read-only question.
When Zep fits better
Zep is a candidate for developers assembling context across enterprise or customer domains, not only previous chat turns. Review the graph scope and governance configuration that fits your application.
The questions people actually ask about Zep
Does Zep have governance controls?
Yes. Its current documentation distinguishes dashboard roles from context-access policies and describes audit and API logging.
Evaluate the policy coverage and retained evidence you actually need. Do not replace that review with a blanket assertion that HeyBrain alone provides governance.
Does a source reference prove the answer?
A source reference helps locate evidence. It does not itself establish that the specific generated claim follows from the source.
In the fictional launch example, check a current approved date against an earlier draft. Ask the assistant to identify unresolved details rather than turning the nearest source into a confident answer.
Can a context policy permit a CRM update?
Zep states that context-access policies do not authorize external actions. The application must enforce those permissions separately.
Use that distinction in both pilots: first retrieve an approved reference, then separately decide whether any source write-back is supported and authorized. This page reports no executed write-back test.
How do we keep the trial manageable?
Pick one reader, one task and a few fictional or approved references. Record the required identities, source ownership and review date.
Compare the quality of the supported answer and the administration required to sustain it. Expand the context set only when someone can explain what changed and who maintains it.
At a glance
| Attribute | HeyBrain | Zep |
|---|---|---|
| Primary scope | Evaluate selected references for a defined workflow | Enterprise context, agent memory and customer/account context |
| Access review | Verify the actual workspace/client identities | Dashboard RBAC and context policies |
| Evidence review | Check each answer against the approved source edition | Documented source references and logging |
| External actions | Verify supported write-back separately | Context policies do not authorize source-system actions |
| Pilot | A dated launch decision with one excluded fictional reference | The same project-boundary exercise |
| Success criterion | Supported answer, correct boundary and sustainable upkeep | The same criteria; no head-to-head test reported |
Compared against publicly available information, last checked 6 October 2026. Products change. Tell us if something here is out of date: hello@heybrain.io
Sources and review method
Vendor documentation checked on 2026-10-06. These sources describe published policies and features; they are not independent tests of your configuration. The fictional pilot examples above are not measured results.
- Zep v3 unified context
Zep v3 describes unified context across enterprise context graphs, agent memory and customer/account context. Applications decide how retrieved context enters a model request and whether an agent may take an external action.
- Zep governance
Zep documents dashboard RBAC, context access policies for API keys and UserGroups, source-episode references, audit logs and API logging. Context policies do not authorize actions in external systems.
Who each one is for
Choose HeyBrain if
- You want to evaluate a selected knowledge-reference workflow
- One defined reader task justifies maintaining the references
- You can verify the actual client and access model
Choose Zep if
- You are building an enterprise or customer-context application
- You want to configure graph scopes and access policies
- You can own context assembly and external-action permissions
Map context before transferring it.
Keep the original system as the source owner. Select a fictional or approved task and verify the receiving input path.
Do not assume graph IDs, policies, source references or external actions map automatically between services. Document the mapping and recovery before expanding the pilot.
Start for freeQuestions, answered
- Is Zep only agent chat memory?
- No. Its v3 documentation covers enterprise context graphs, agent memory and customer/account context.
- Does Zep control external tool actions?
- Its governance documentation says context policies control Zep context access; your application must authorize external-system actions separately.
- Can I automatically migrate a Zep graph to HeyBrain?
- This page establishes no automatic graph or permission migration. Verify a supported transfer path and compare a small approved task first.
Other comparisons
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