Voyage AI: voyage-code-4:free

voyage-code-4 is a code embedding model from Voyage AI, a MongoDB company. It is designed for coding agents and code retrieval, with Matryoshka embeddings at 2048, 1024, 512, and 256 dimensions and multiple quantization options. Learn more about voyage-code-4 here: blog.voyageai.com/2026/08/13/voyage-code-4