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

opteryx
0.15.0b487

This version was deleted from PyPI around 2025-07-27. Installing fails with:
$ pip3 install opteryx==0.15.0b487 ERROR: Could not find a version that satisfies the requirement opteryx==0.15.0b487

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/2025-07-26/ \ opteryx==0.15.0b487
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