With Davia, you build on FastAPI and React best practices. Streamlit and Gradio rely on fixed components, which makes it hard to adapt the UI to your specific use case. Davia lets you define any interface you need. Streamlit also has production limitations like authentication, layout control, and API integration. And for AI use cases, it reruns the whole script on every input, making state management difficult. Davia supports real-time streaming and proper stateful interactions.