Comparison

Bilinc vs Zep.

Zep provides long-term memory for AI agents with its Graphiti graph memory engine, targeting enterprise workloads. Bilinc compares against Zep on graph relationships while delivering significantly better retrieval benchmarks and adding a verification layer that Zep does not offer.

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Decision table

Feature comparison.

FeatureBilincZep

ArchitectureZ3 verification + AGM revision + ChromaDB + entity KGGraphiti graph memory + PostgreSQL + LLM entity extraction

LongMemEval R@598.0% (no LLM)71.2% (GPT-4o-assisted)

VerificationZ3 proof checking per commitNot supported

Belief revisionAGM belief revision engine (4 strategies)Not supported

Contradiction detectionDedicated contradiction probe engineNot supported

Snapshot & rollbackTimeline snapshots with verifiable rollbackNot supported

Graph approachEntity-relation KG with temporal edge typesGraphiti: entity + relationship graph with timestamps

Multi-agent coordinationCloud-based sync with conflict resolutionGraph-based session sharing

Audit trailFirst-class Cloud audit with programmatic replayApplication-level

LLM dependencyNone for retrieval or memory operationsLLM-based entity extraction for graphs

LicenseSource-available BUSL 1.1 (Apache 2.0 roadmap)Open-core

Pricing7-day Cloud trial, then paid hosted plansFree tier + paid enterprise tiers

GitHub stars~8,200~15,000 (Zep)

When Bilinc is the better choice

Verifiable enterprise agent memory.

You need verifiable memory state for regulated environments.
Benchmark performance matters: 98.0% vs 71.2% on LongMemEval.
You want source-available infrastructure with hosted Cloud operations.
You need contradiction detection and belief revision across agents.
You prefer no LLM dependency for core memory operations.

When Zep is the better choice

Established enterprise integration.

You already use Zep and its Graphiti API for graph memory.
You need enterprise support and formal SLAs.
You require PostgreSQL-backed persistence for your infrastructure.
You do not need verification, audit, or rollback capabilities.

FAQ

Common questions.

Why is Bilinc so far ahead on LongMemEval?

Bilinc uses ChromaDB with a fine-tuned retrieval pipeline that does not depend on LLM calls. Zep uses Graphiti which requires LLM entity extraction before graph operations, adding latency and noise. Bilinc's 98.0% vs Zep's 71.2% is a direct result of avoiding the LLM bottleneck for retrieval.

Can Bilinc handle graph relationships like Zep?

Yes. Bilinc has a built-in entity-relation knowledge graph with temporal edges (related_to, causes, contradicts, supports, temporal_before). This is similar to Graphiti's entity graph. Bilinc adds belief revision on top, so when two agents store contradictory graph relationships, the system resolves the conflict rather than storing both without reconciling them.

Is Bilinc enterprise-ready?

Bilinc Cloud provides audit trails, snapshot/rollback, and multi-agent coordination. The verification layer (Z3 SMT proofs per commit) is unique for regulated environments. Bilinc is BUSL 1.1 licensed with an Apache 2.0 roadmap. For enterprise SLAs and self-hosted deployment support, contact the team.

What about the pricing difference?

Bilinc Cloud starts with a 7-day trial and then paid hosted plans. Zep has a free tier plus paid enterprise tiers. Compare based on retention, API usage, verification, and operational audit needs.

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