Cognee vs spaCy

Cognee turns documents, chats, tickets, and API data into graph memory language model agents can recall across sessions. It builds linked entity graphs from that context so agents stop restarting from scratch each run. You can connect Slack, GitHub, or Linear so coding agents and support bots share one permission-aware company brain.

Plain RAG returns similar text chunks. Cognee pairs vector search with knowledge graphs and auto-generated ontologies, so recall pulls connected entities and cited facts rather than isolated snippets. The SDK centers on four verbs, remember, recall, forget, and improve, and the same surface ships over HTTP and MCP for Claude Code, Codex, and OpenClaw.

Platform teams use it for coding agent memory, GraphRAG pipelines, deal intelligence, and customer-facing agents that need grounded answers. Run it with pip locally, self-host in Docker or on-prem, or move to Cognee Cloud when you want managed scale. The project reports 30.4k GitHub stars and 5M+ SDK runs per month, with production deployments at Bayer and Knowunity.

spaCy is a Python library designed for practical, real-world Natural Language Processing (NLP) tasks. It provides fast and efficient processing of large text datasets, supporting over 75 languages with 84 trained pipelines. The library is built with Cython for optimized speed and memory management, making it suitable for production environments. The core of spaCy revolves around the Language class, which processes text into Doc objects containing tokens and annotations.

Its modular pipeline architecture allows users to add or customize components such as tokenization, part-of-speech tagging, dependency parsing, named entity recognition, text classification, and more. spaCy also supports integration with machine learning frameworks like PyTorch and TensorFlow, enabling custom model training and deployment. Recent updates include the spacy-llm package, which integrates Large Language Models (LLMs) into spaCy pipelines for tasks requiring advanced language understanding without needing training data. The library also offers a project system to manage end-to-end workflows from prototyping to production, including data transformation, training, and deployment steps.

spaCy emphasizes reproducible training with detailed configuration files that capture all training parameters, facilitating experiment tracking and reruns. It also provides built-in visualizers for syntax and entity recognition, and an extensive ecosystem of plugins and community resources. For users needing annotation tools, spaCy's creators offer Prodigy, a separate efficient machine teaching tool that accelerates data labeling and model iteration. Overall, spaCy balances performance, extensibility, and ease of use, making it a preferred choice for developers and data scientists working on NLP applications.