Olmo 3.1 32B Instruct and Sonar Pro Search are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Olmo 3.1 32B Instruct, from Ai2, has a 65,536-token context window and is priced by the provider serving it on OpenRouter.
Sonar Pro Search, from Perplexity, has a 200,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.