Laravel Breeze provides a solid authentication flow with sleek views, a component system, and a basic dashboard layout, built with Laravel Blade. It's an excellent choice for quickly getting authentication added to an application without requiring a large amount of opinionated code. Breeze is perfect for apps mainly consisting of Blade templates or when rapid authentication setup is needed. On the other hand, Laravel Jetstream offers more advanced features such as API authentication with Sanctum, email verification, login and registration functionality, session management, team management, and two-factor authentication. Jetstream provides a framework within a framework, offering scaffolding support and library features to build a fully functioning Sass dashboard. It's suitable for building new Laravel applications that require user authentication and other features. While both packages share similarities, Jetstream relies heavily on a front-end stack with Livewire or Inertia.js, whereas Breeze is more lightweight and focused on backend functionality. Overall, the choice between Breeze and Jetstream depends on the specific needs of the project, such as the required level of customization and the desired front-end technology stack.