Ling 3.0 Flash Fin and Muse Spark 1.2 Contributor are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Ling 3.0 Flash Fin, from inclusionai, has a 262,144-token context window and is priced by the provider serving it on OpenRouter.
Muse Spark 1.2 Contributor, from Meta, has a 1,048,576-token context window and is priced at $0.10/M tokens input, $0.20/M tokens output on OpenRouter.