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Preston Rasmussen

Lies, Damn Lies, & Statistics: Is Mem0 Really SOTA in Agent Memory?

Lies, Damn Lies, & Statistics: Is Mem0 Really SOTA in Agent Memory?

Mem0 recently published research claiming to be the State-of-the-Art in Agent Memory, besting Zep. In reality, Zep outperforms Mem0 by 10% on their chosen benchmark. Why the discrepancy? We dig in to understand. 💡December 9, 2015: We've published new LoCoMo scores for Zep: 80% at <200ms latency.

GPT-4.1 and o4-mini: Is OpenAI Overselling Long-Context?

GPT-4.1 and o4-mini: Is OpenAI Overselling Long-Context?

We put OpenAI’s latest models through the LongMemEval benchmark—here’s why raw context size alone isn't enough.

The One-Token Trick

The One-Token Trick

How single-token LLM requests can improve RAG search at minimal cost and latency.

Zep Is The New State of the Art In Agent Memory

Zep Is The New State of the Art In Agent Memory

Setting a new standard for agent memory with up to 100% accuracy gains and 90% lower latency.

Zep: A Temporal Knowledge Graph Architecture for Agent Memory

💡Looking for a summary of the findings? Read the announcement. Abstract We introduce Zep, a novel memory layer service for AI agents that outperforms the current state-of-the-art system, MemGPT, in the Deep Memory Retrieval (DMR) benchmark. Additionally, Zep excels in more comprehensive and challenging evaluations than DMR that better reflect

How do you search a Knowledge Graph?

How do you search a Knowledge Graph?

Can you build graph search that's both elegant & powerful? Here's how we did it in Graphiti, Zep's open source temporal Knowledge Graph library.

Scaling LLM Data Extraction: Challenges, Design decisions, and Solutions

Scaling LLM Data Extraction: Challenges, Design decisions, and Solutions

How we made building Knowledge Graphs faster and more dynamic