voyage-code-4 and Nemotron 3 Embed 1B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
voyage-code-4, from voyageai, has a 32,000-token context window and is priced at $0.12/M tokens on OpenRouter.
Nemotron 3 Embed 1B, from Nvidia, has a 32,768-token context window and is priced by the provider serving it on OpenRouter.