Python package and CLI 1.2.0

May 5, 2026, 3:31 PM UTC

PyRel 1.2.0 adds easier CLI navigation, directed graph support in Graph.cosine_similarity(), and fixes several bugs.

How to install this version

Review the changes below before installing. To install this version, activate a compatible Python virtual environment and run:

python -m pip install "relationalai==1.2.0"

For the latest installation instructions, see Start building with PyRel.

New Features and Enhancements

The rai CLI now supports space-separated subcommands such as rai jobs list and rai reasoners list. Existing rai jobs:list-style commands still work, but interactive shells now show a one-time deprecation hint so you can migrate at your own pace.
rai completion install adds shell completion setup for bash, zsh, and fish, and rai commands gives you a browsable view of the available CLI command tree.
Graph.cosine_similarity() now supports directed graphs.

In scripts, CI, and other non-interactive runs, PyRel now shows the full error details before the final RAIException when type inference or similar compiler checks fail. Before, these failed checks could stop with only a generic see above for details message with the real diagnostic missing.
Problem.solve_for() now works when you solve for an inherited property or relationship. Prior to this fix, if a Parent concept defines a Parent.foo property and the Sub concept inherits it by extending Parent, solve_for(Sub.foo) could raise a TypeError.