Voxtral Small 24B 2507 and Palmyra X5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Voxtral Small 24B 2507, from Mistral AI, has a 32,768-token context window and is priced at $0.10/M tokens input, $0.30/M tokens output on OpenRouter.
Palmyra X5, from Writer, has a 1,040,000-token context window and is priced at $0.60/M tokens input, $6/M tokens output on OpenRouter.