You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

nexaai
1.0.19rc3

This version was deleted from PyPI around 2025-10-16. Installing fails with:
$ pip3 install nexaai==1.0.19rc3 ERROR: Could not find a version that satisfies the requirement nexaai==1.0.19rc3
View other deleted versions of nexaai

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-10-15/ \ nexaai==1.0.19rc3
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
nexaai-1.0.19rc3-cp310-cp310-macosx_13_0_x86_64.whl (3.5MB)
nexaai-1.0.19rc3-cp310-cp310-macosx_14_0_universal2.whl (12.0MB)
nexaai-1.0.19rc3-cp310-cp310-win_amd64.whl (284.9MB)