1. Scalability and Cloud Support: Jenkins is a self-hosted solution that allows users to set up and scale their own infrastructure as per their requirement. On the other hand, Laravel Forge is a cloud-based managed service by Laravel that provides an easy and scalable solution without the need for infrastructure management.

2. Ease of Use: Jenkins is a powerful and highly customizable open-source automation tool, but it requires in-depth technical knowledge and configuration skills to set up and maintain. In contrast, Laravel Forge has a user-friendly interface and provides a streamlined experience for developers, making it easier to set up and manage servers.

3. Integration with Laravel Ecosystem: Laravel Forge is specifically designed for Laravel applications and offers seamless integration with Laravel's ecosystem, including features like automated deployment, one-click SSL certificate installations, and easy configuration for Laravel projects. Jenkins, being a general-purpose automation tool, requires additional plugins and configuration to achieve similar functionalities.

4. Backup and Monitoring: Laravel Forge provides built-in backup and monitoring features for servers, making it easy to schedule automated backups and monitor server performance. On the other hand, Jenkins does not have these features out-of-the-box and requires additional plugins and configurations for backup and monitoring.

5. Community Support and Documentation: Jenkins has a large and active community with extensive documentation and support resources available. Users can find a wide range of plugins, tutorials, and solutions for commonly faced issues. Laravel Forge, being a product by Laravel, also has a supportive community and detailed documentation specifically tailored towards Laravel applications.

6. Cost: Jenkins is an open-source tool and is free to use. However, it requires a dedicated server infrastructure and maintenance, which might incur costs. Laravel Forge has a subscription-based pricing model with different plans based on the number of servers and additional features. The cost of using Laravel Forge depends on the specific requirements and usage.

In Summary, Jenkins and Laravel Forge differ in terms of scalability, ease of use, integration with Laravel ecosystem, backup and monitoring features, community support, and cost. Laravel Forge provides a cloud-based managed service specifically designed for Laravel applications, offering a more streamlined and user-friendly experience, while Jenkins is a powerful and customizable automation tool that requires technical knowledge and infrastructure management.