A: If ChatGpt or Gemini can write in a language, then it is supported; however, quality will vary across languages. The system is built to track language throughout generation so it is mulit-lingual by design. Note that a book can only be in one language. Also, human models are language-specific (decided on th language of the samples used).

We use a mix of providers and models depending on the task (over a dozen models). To be able to decide that provider is used for a family of tasks you would need BYOK enabled.