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AI · June 3, 2025

Cognee – Open-Source AI Memory Layer That Remembers Context

Hey HN! We're Vasilije, Laszlo and Lazar, the authors of a new paper and part of https://www.cognee.ai. cognee let’s you build memory layers for AI applications and agents, allowing them to personalize results, connect various data sources, and add custom rules. This enables AI apps to deliver increasingly accurate responses, we reached almost 90% on standard industry benchmarks as you can see here https://github.com/topoteretes/cognee/tree/main/evals and our paper can be accessed at: https://arxiv.org/abs/2505.24478 and collab…

Cognee – Open-Source AI Memory Layer That Remembers Context launched on June 3, 2025 with 9 votes, #3,023 of 7,999 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine. - topoteretes/cognee

In the maker’s words, at launch

Hey HN! We're Vasilije, Laszlo and Lazar, the authors of a new paper and part of https://www.cognee.ai. cognee let’s you build memory layers for AI applications and agents, allowing them to personalize results, connect various data sources, and add custom rules. This enables AI apps to deliver increasingly…

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