Relace Search and GTE-Base are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Relace Search, from relace, has a 256,000-token context window and is priced at $1/M tokens input, $3/M tokens output on OpenRouter.
GTE-Base, from thenlper, has a 512-token context window and is priced at $0.005/M tokens on OpenRouter.