Olmo 3.1 32B Think and Palmyra X5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Olmo 3.1 32B Think, from Ai2, has a 65,536-token context window and is priced by the provider serving it 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.