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Carbon supports multiple models for use in generating embeddings for files. For images, we support Vertex AI’s multimodal model; for text, we support OpenAI’s text-embedding-ada-002 and Cohere’s embed-multilingual-v3.0. The model can be specified via the embedding_model parameter (in the POST body for /embeddings, and a query parameter in /uploadfile). If no model is supplied, the text-embedding-ada-002 is used by default. When performing embedding queries, embeddings from files that used the specified model will be considered in the query. For example, if files A and B have embeddings generated with OPENAI, and files C and D have embeddings generated with COHERE_MULTILINGUAL_V3, then by default, queries will only consider files A and B. If COHERE_MULTILINGUAL_V3 is specified as the embedding_model in /embeddings, then only files C and D will be considered. Make sure that the set of all files you want considered for a query have embeddings generated via the same model. For now, do not set VERTEX_MULTIMODAL as an embedding_model. This model is used automatically by Carbon when it detects an image file.