# AI Agent Node An AI Agent Node is the heartbeat (or heartbeats!) or your project. StackAI is provider-agnostic, just choose your favorite provider and select the model you'd like to use in your project. If you change your mind and want to try a different provider or model, just make your selection in the dropdown menu.

To see an up to date list of our available providers and models, visit our [LLM Leaderboard here.](https://www.stack-ai.com/llm-leaderboard)