Azure Cognitive Services
Tensoria published an engineering guide dated May 15, 2026 comparing embedding models for production RAG systems, noting that the landscape has shifted with open-source models matching or exceeding closed-source performance on retrieval tasks and that Matryoshka training has made dimension trade-offs practical. The aut The guide offers practical guidance for developers evaluating text-embedding-3-large and similar models, warning that the MTEB leaderboard headline score is an unweighted average across 56 datasets and 7 task categories, so for document retrieval (90% of RAG use cases) teams should focus on the Retrieval sub-score usin