What to Do When Changing Embedding Models Vectors from different models are incompatible. You cannot mix old and new embeddings in the same vector space. All named vectors must be defined at collection creation time. Both migration strategies below require creating a new collection. - Understand collection aliases before choosing a strategy Collection aliases Can I Avoid Re-embedding? Use when: looking for shortcuts before committing to full migration. You MUST re-embed if: changing model provider (OpenAI to Cohere), changing architecture (CLIP to BGE), incompatible dimension counts across di…