fix(router): mid-stream fallback 400s on models without assistant prefill (Claude Sonnet 4.6+) - #30743

fix(router): mid-stream fallback 400s on models without assistant prefill (Claude Sonnet 4.6+)#30743

mateo-berri wants to merge 13 commits into

mainBerriAI/litellm:mainfrom

litellm_midstream_fallback_prefill_claude46BerriAI/litellm:litellm_midstream_fallback_prefill_claude46Copy head branch name to clipboard