4 RAG embedding models compared in 2026: Nemotron 3 Embed vs OpenAI, Cohere and open-weight

4 RAG embedding models compared in 2026: Nemotron 3 Embed vs OpenAI, Cohere and open-weight Summary. On 15 July 2026 NVIDIA released Nemotron 3 Embed, and the 8B checkpoint now leads the RTEB (beta) r