AI agents are generative tools that autonomously perform tasks given natural language prompting. Devin, a software engineering AI agent, is well-known for its sophisticated reasoning and UI, while open-source alternatives like OpenHands, SWE-agent, Aider, smol-developer, and Devika offer similar capabilities with varying degrees of research focus and complexity. These agents can be used to automate tasks such as code generation, troubleshooting, and issue resolution, and some have raised seed rounds to support their development and deployment.