AI agent data storage tools — AI data 2026 | Stack Overflow Developer Survey

Developer Survey 2026

Question

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?

scale
Optional
v2026.1

Data

	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%

Use this data

Citation

Response data is released under the ODbL 1.0, which asks that you attribute it.

Stack Exchange Inc. (2026). “AI agent data storage tools”. Stack Overflow Developer Survey 2026. Licensed under ODbL 1.0. https://survey.stackoverflow.co/2026/ai/data/ai-mem

JSON

Structured for code, with the question, the year and the source url alongside the numbers.

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  "asked": "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?",
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  "url": "https://survey.stackoverflow.co/2026/ai/data/ai-mem",
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    {
      "response": "Mem0",
      "count": 279,
      "pct": 0.2
    },
    {
      "response": "LangMem",
      "count": 212,
      "pct": 0.152
    },
    {
      "response": "Memary",
      "count": 176,
      "pct": 0.126
    },
    {
      "response": "Graphiti",
      "count": 162,
      "pct": 0.116
    },
    {
      "response": "Supermemory",
      "count": 162,
      "pct": 0.116
    },
    {
      "response": "Zep",
      "count": 151,
      "pct": 0.108
    },
    {
      "response": "Letta",
      "count": 150,
      "pct": 0.108
    },
    {
      "response": "Cognee",
      "count": 133,
      "pct": 0.096
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Markdown

A formatted table, ready to paste into a document, an issue or a prompt.

|  | 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% |

Spreadsheet

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