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

{
The left issue spans cross-provider reasoning semantics, message-history transformation, compatibility behavior, and regression coverage across multiple adapter paths. The right issue appears more localized to request-schema or tool-conversion handling, with narrower integration scope.
}
https://github.com/berriai/litellm/issues/26916 3:1 https://github.com/berriai/litellm/issues/27454