Embed V1 0.6B and E5-Large-v2 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Embed V1 0.6B, from Perplexity, has a 32,000-token context window and is priced at $0.004/M tokens on OpenRouter.
E5-Large-v2, from intfloat, has a 512-token context window and is priced at $0.01/M tokens on OpenRouter.