Hermes 4 405B and all-MiniLM-L12-v2 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Hermes 4 405B, from Nous Research, has a 131,072-token context window and is priced at $1/M tokens input, $3/M tokens output on OpenRouter.
all-MiniLM-L12-v2, from sentence-transformers, has a 512-token context window and is priced at $0.005/M tokens on OpenRouter.