autogen4j is a lightweight Java library designed to abstract the complexity of building autonomous AI agents. It offers core modules for planning, memory storage, and action execution, letting agents decompose high-level goals into sequential sub-tasks. The framework integrates with LLM providers (e.g., OpenAI, Anthropic) and allows registration of custom tools (HTTP clients, database connectors, file I/O). Developers define agents through a fluent DSL or annotations, quickly assembling pipelines for data enrichment, automated reporting, and conversational bots. An extensible plugin system ensures flexibility, enabling fine-tuned behaviors across diverse applications.

Crewai provides a Python-based library to design and execute multi-AI agent systems. Users can define individual agents with specialized roles, configure messaging channels for inter-agent communication, and implement dynamic planners to allocate tasks based on real-time context. Its modular architecture enables plugging in different LLMs or custom models for each agent. Built-in logging and monitoring tools track conversations and decisions, allowing seamless debugging and iterative refinement of agent behaviors.