🏛️
Our PickMemPalace
Verbatim storage with vector search. Created by Milla Jovovich & Ben Sigman. First 100% LongMemEval score.
96.6% raw
LongMemEval
Free
Pricing
Local
Deploy
open-sourceMITlocal-firstMCP
AI Memory Tools Directory — Every Framework Compared
The AI memory landscape in 2026 is crowded and moving fast. Vector stores, knowledge graphs, hierarchical buffers, temporal trackers — every week a new framework claims to give LLMs “perfect memory.” This directory cuts through the noise: real benchmark scores, real pricing, and honest tradeoffs for every major tool we could find.
Last updated: April 2026 · 10 tools listed
🧠
Mem0
LLM-powered memory extraction. YC-backed with $24M funding. Enterprise-grade managed service.
~85%
LongMemEval
$0–249/mo
Pricing
Cloud
Deploy
cloudenterpriseYC-backed
🕸️
Zep / Graphiti
Temporal knowledge graph for agent memory. Tracks how facts change over time with entity relationships.
~85%
LongMemEval
$0–475/mo
Pricing
Cloud
Deploy
cloudknowledge-graphtemporal
📚
Letta (MemGPT)
Hierarchical agent memory with self-editing capabilities. Evolved from the MemGPT research project.
N/A
LongMemEval
$0–249/mo
Pricing
Self-host / Cloud
Deploy
open-sourceself-hostableagents
🔬
Cognee
Knowledge graph + vector hybrid with 30+ data connectors. Enterprise data integration focus.
N/A
LongMemEval
$0–1,970/mo
Pricing
Cloud / Self-host
Deploy
enterpriseknowledge-graphconnectors
⚡
SuperMemory
Memory graph + RAG pipeline. Fast retrieval with structured memory relationships.
81.6%
LongMemEval
Free tier
Pricing
Cloud
Deploy
cloudRAGgraph
🔗
LangMem
Flat key-value + vector memory for the LangGraph ecosystem. Lightweight and composable.
N/A
LongMemEval
Free
Pricing
Self-host
Deploy
open-sourceLangGraphlightweight
🔍
Hindsight
Multi-strategy retrieval combining multiple memory approaches. Strong benchmark performance.
91.4%
LongMemEval
Free tier
Pricing
Self-host / Cloud
Deploy
multi-strategyself-hostable
🧩
Pieces
Cross-app developer memory bridge. Captures context across your IDE, browser, and collaboration tools.
N/A
LongMemEval
Free tier
Pricing
Local + Cloud
Deploy
developerMCPcross-app
💬
Personal.ai
Consumer AI companion with persistent memory. Designed for personal knowledge management.
N/A
LongMemEval
Freemium
Pricing
Cloud
Deploy
consumercompanionpersonal
Missing a tool?
The AI memory space evolves weekly. If you know a framework we haven't listed, open an issue or drop us a line.