You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
litellm was reported malicious
OSV:MAL-2026-2144 - Malicious code in litellm (PyPI)

litellm
1.39.6

This version was deleted from PyPI around 2026-03-24. Installing fails with:
$ pip3 install litellm==1.39.6 ERROR: Could not find a version that satisfies the requirement litellm==1.39.6
View other deleted versions of litellm

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/2026-03-23/ \ litellm==1.39.6
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Or, download files manually

And install manually via pip:
litellm-1.39.6-py3-none-any.whl (4.3MB)
litellm-1.39.6.tar.gz (4.1MB)