Compared
Zep tracks facts over time. This stores episodes.
Graphiti, the open-source library associated with Zep, describes itself as "a framework for building and querying temporal context graphs for AI agents." It says those graphs track how facts change, keep provenance to source data, and support both a prescribed and a learned ontology.
What they say they are
That description is the opening of the Graphiti README , fetched 30 September 2026. Zep is the hosted service in front of that idea. FluctlightDB does not ask you to model entities first. A cue spreads through memories that were written as episodes. Provenance here is a source on the memory, not a validity interval on a fact.
No number from their papers or dashboards is repeated here. Evidence recall and an LLM-judged answer are different measurements, and this site does not rank them.
When to pick which
Pick Zep or Graphiti when the problem is facts that change about entities you are willing to model, and you will run or rent a graph database. Pick FluctlightDB when you want one directory per agent and recall from a cue. The short form is on the comparison .