> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wazoo.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Worlds vs Mem0

> Worlds vs Mem0: curated graph facts against extracted agent memories.

## At a glance

|                 | Worlds                 | [Mem0](https://mem0.ai)                 |
| :-------------- | :--------------------- | :-------------------------------------- |
| Data model      | RDF triples            | Extracted memory items                  |
| How facts enter | Curated import         | Automatic extraction from conversations |
| Retrieval       | Hybrid search + SPARQL | Similarity search                       |
| Provenance      | Fact-level ledger      | Item-level                              |
| Query language  | SPARQL                 | SDK retrieval                           |

## The philosophical difference

[Mem0](https://mem0.ai) captures memories from conversations and stores them as
extracted items you retrieve by similarity. The memory layer decides what
matters and returns the most similar entries when asked.

Worlds inverts that. You decide which facts matter, assert them as RDF triples,
and the engine keeps them in a chronological ledger. Retrieval is deterministic:
the graph either contains the fact or it does not, and [SPARQL](/worlds/query)
can prove which.

Extracted memories are convenient for chat applications. They are weak when the
agent's answer must be defensible, because the stored item is a model-generated
summary rather than a fact tied to a source.

## When Worlds fits

* Agents act on facts that can be checked against a source of record.
* You need to resolve contradictions instead of returning conflicting memories.
* You want a queryable knowledge structure, not a bag of extracted items.

## When Worlds does not fit

* You want automatic memory from user conversations with zero curation.
* Recall quality matters more than factual exactness.
* Your team does not want to design a graph vocabulary.

## Coexistence

Use Mem0 for conversational context and Worlds for the durable facts the agent
is allowed to act on. Keep the two separate: the extracted summary stays on the
chat side while the authoritative fact comes from the graph.