---
title: "AI agent data storage tools — AI data 2026"
url: https://survey.stackoverflow.co/2026/ai/data/ai-mem
year: 2026
chapter: "ai"
question: "AIMem"
section: "AI agent tools"
licence: "ODbL 1.0 (https://opendatacommons.org/licenses/odbl/1-0/)"
---

# AI agent data storage tools

Mem0 leads at 20%, but no product exceeds one-fifth of the sample, the agent-memory market remains fragmented.

Asked as: Have you used any of the following tools for AI agent memory or vector databases in the past year? Do you want to use any of the following in the next 6 months? (`AIMem`, scale, optional, v2026.1)

## Options offered

1. Mem0
2. Letta
3. Zep
4. LangMem
5. Supermemory
6. Cognee
7. Graphiti
8. Hyperspell
9. Memary

## Results

### Used

n = 1,392

|  | Respondents | Percent |
| --- | ---: | ---: |
| Mem0 | 279 | 20.0% |
| LangMem | 212 | 15.2% |
| Memary | 176 | 12.6% |
| Graphiti | 162 | 11.6% |
| Supermemory | 162 | 11.6% |
| Zep | 151 | 10.8% |
| Letta | 150 | 10.8% |
| Cognee | 133 | 9.6% |
| Hyperspell | 129 | 9.3% |

### Want to use

n = 1,392

|  | Respondents | Percent |
| --- | ---: | ---: |
| Mem0 | 663 | 47.6% |
| LangMem | 613 | 44.0% |
| Memary | 483 | 34.7% |
| Graphiti | 508 | 36.5% |
| Supermemory | 574 | 41.2% |
| Zep | 488 | 35.1% |
| Letta | 480 | 34.5% |
| Cognee | 492 | 35.3% |
| Hyperspell | 466 | 33.5% |

In context: https://survey.stackoverflow.co/2026/ai/data.md