CrewAI is a modular Python framework designed for building fully autonomous AI Agents. It provides core components such as an Agent Orchestrator for planning and decision making, a Tool Integration layer for connecting external APIs or custom actions, and a Memory Module to store and recall context across interactions. Developers define tasks, register tools, configure memory backends, and then launch Agents that can plan multi-step workflows, execute actions, and adapt based on results, making CrewAI ideal for creating intelligent assistants, automated workflows, and research prototypes.

Modular LLM Architecture is designed to simplify the creation of customized LLM-driven applications through a composable, modular design. It provides core components such as memory modules for session state retention, tool interfaces for external API calls, prompt managers for template-based or dynamic prompt generation, and orchestration engines to control agent workflow. You can configure pipelines that chain together these modules, enabling complex behaviors like multi-step reasoning, context-aware responses, and integrated data retrieval. The framework supports multiple LLM backends, allowing you to switch or mix models, and offers extensibility points for adding new modules or custom logic. This architecture accelerates development by promoting reuse of components, while maintaining transparency and control over the agent’s behavior.