Aion-3.0 and Muse Glimmer 30B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Aion-3.0, from Aion Labs, has a 131,072-token context window and is priced at $3/M tokens input, $6/M tokens output on OpenRouter.
Muse Glimmer 30B, from Meta, has a 131,072-token context window and is priced at $0.30/M tokens input, $1.10/M tokens output on OpenRouter.