Ministral 3 3B 2512 and all-MiniLM-L6-v2 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Ministral 3 3B 2512, from Mistral AI, has a 131,072-token context window and is priced at $0.10/M tokens input, $0.10/M tokens output on OpenRouter.
all-MiniLM-L6-v2, from sentence-transformers, has a 512-token context window and is priced at $0.005/M tokens on OpenRouter.