Perceptron Mk1 and Cydonia 24B V4.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Perceptron Mk1, from perceptron, has a 32,768-token context window and is priced at $0.15/M tokens input, $1.50/M tokens output on OpenRouter.
Cydonia 24B V4.1, from Drummer, has a 131,072-token context window and is priced at $0.30/M tokens input, $0.50/M tokens output on OpenRouter.