bge-large-en-v1.5 and Text Embedding Ada 002 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
bge-large-en-v1.5, from baai, has a 512-token context window and is priced at $0.01/M tokens on OpenRouter.
Text Embedding Ada 002, from OpenAI, has a 8,192-token context window and is priced at $0.10/M tokens on OpenRouter.