In a recent interview published on the Cloudways blog Taylor Otwell shares his thoughts on the similarities differences between Laravel and Symfony.
Both Laravel and Symfony are more rapid than building an entire PHP application from scratch. So, in that sense, they both allow rapid application development. However, Laravel does make strong efforts to have a very clean and productive working environment for building applications of all sizes. I think Symfony has also made efforts in this direction over the last few years with their “DX” initiatives and some of the more opinionated things they are doing with Symfony Flex.