SciRuby is an umbrella project for scientific computing in Ruby, providing foundational libraries for numerical analysis, linear algebra, and data science workflows.

While not Rails-specific, it underpins AI development in Ruby by offering tools for handling large datasets, matrices, and mathematical operations.

Setup is straightforward: include the relevant SciRuby gems (such as NMatrix or Daru) in your Gemfile and begin using them in Rails models or background jobs.

Its strengths are its breadth of tools and ability to bring data science workflows into Ruby, while weaknesses include smaller community adoption compared to Python and occasional gaps in documentation.