
cognee
Reliable LLM Memory for AI Applications and AI Agents
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Cognee is an open-source framework designed for creating self-improving deterministic outputs for Large Language Models (LLMs) using graphs, LLMs, and vector retrieval. It provides a platform for AI engineers to enhance their models and generate more accurate results. Users can leverage Cognee to add new information, utilize LLMs for knowledge creation, and query the system for relevant knowledge. The tool supports various LLM providers and offers flexibility in adding different data types, such as text files or directories. Cognee aims to streamline the process of working with LLMs and improving AI models for better performance and efficiency.
README:

cognee - memory layer for AI apps and Agents
Demo . Learn more · Join Discord
AI Agent responses you can rely on.
Build dynamic Agent memory using scalable, modular ECL (Extract, Cognify, Load) pipelines.
More on use-cases.
- Interconnect and retrieve your past conversations, documents, images and audio transcriptions
- Reduce hallucinations, developer effort, and cost.
- Load data to graph and vector databases using only Pydantic
- Manipulate your data while ingesting from 30+ data sources
Get started quickly with a Google Colab notebook or starter repo
Your contributions are at the core of making this a true open source project. Any contributions you make are greatly appreciated. See CONTRIBUTING.md
for more information.
You can install Cognee using either pip, poetry, uv or any other python package manager.
pip install cognee
import os
os.environ["LLM_API_KEY"] = "YOUR OPENAI_API_KEY"
You can also set the variables by creating .env file, using our template. To use different LLM providers, for more info check out our documentation
Add LLM_API_KEY to .env using the command bellow.
echo "LLM_API_KEY=YOUR_OPENAI_API_KEY" > .env
You can see available env variables in the repository .env.template
file. If you don't specify it otherwise, like in this example, SQLite (relational database), LanceDB (vector database) and NetworkX (graph store) will be used as default components.
This script will run the default pipeline:
import cognee
import asyncio
from cognee.modules.search.types import SearchType
async def main():
# Create a clean slate for cognee -- reset data and system state
await cognee.prune.prune_data()
await cognee.prune.prune_system(metadata=True)
# cognee knowledge graph will be created based on this text
text = """
Natural language processing (NLP) is an interdisciplinary
subfield of computer science and information retrieval.
"""
print("Adding text to cognee:")
print(text.strip())
# Add the text, and make it available for cognify
await cognee.add(text)
# Use LLMs and cognee to create knowledge graph
await cognee.cognify()
print("Cognify process complete.\n")
query_text = "Tell me about NLP"
print(f"Searching cognee for insights with query: '{query_text}'")
# Query cognee for insights on the added text
search_results = await cognee.search(
query_text=query_text, query_type=SearchType.INSIGHTS
)
print("Search results:")
# Display results
for result_text in search_results:
print(result_text)
# Example output:
# ({'id': UUID('bc338a39-64d6-549a-acec-da60846dd90d'), 'updated_at': datetime.datetime(2024, 11, 21, 12, 23, 1, 211808, tzinfo=datetime.timezone.utc), 'name': 'natural language processing', 'description': 'An interdisciplinary subfield of computer science and information retrieval.'}, {'relationship_name': 'is_a_subfield_of', 'source_node_id': UUID('bc338a39-64d6-549a-acec-da60846dd90d'), 'target_node_id': UUID('6218dbab-eb6a-5759-a864-b3419755ffe0'), 'updated_at': datetime.datetime(2024, 11, 21, 12, 23, 15, 473137, tzinfo=datetime.timezone.utc)}, {'id': UUID('6218dbab-eb6a-5759-a864-b3419755ffe0'), 'updated_at': datetime.datetime(2024, 11, 21, 12, 23, 1, 211808, tzinfo=datetime.timezone.utc), 'name': 'computer science', 'description': 'The study of computation and information processing.'})
# (...)
#
# It represents nodes and relationships in the knowledge graph:
# - The first element is the source node (e.g., 'natural language processing').
# - The second element is the relationship between nodes (e.g., 'is_a_subfield_of').
# - The third element is the target node (e.g., 'computer science').
if __name__ == '__main__':
asyncio.run(main())
For more advanced usage, have a look at our documentation.
What is AI memory:
We are committed to making open source an enjoyable and respectful experience for our community. See CODE_OF_CONDUCT
for more information.
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