Sorting LiteLLM GitHub issues by difficulty to implement. Higher = harder.

{
Issue #26702 is harder because it involves tracing model-configuration normalization, authentication precedence, creation-time versus runtime behavior, and backward compatibility across provider paths, requiring broader regression coverage. Issue #19138 appears more localized to conditional credential validation in a single Vertex implementation path.
}
https://github.com/berriai/litellm/issues/26702 3:1 https://github.com/berriai/litellm/issues/19138