A: Hi, you can bring the Anthropic keys, but, we do not list Opus as an option (too expensive, makes no sense), and in general, we ding Anthropic value to cost ratio not as competitive. We use a little bit of Claude in the agentic discussions to enrich the perspectives, but that's about it.

If you like Claude's character or style, you should try training your own Human Model to mimic a certain human style (requires samples).

Also, keep in mind that managing API keys can get a bit technical on the Google Cloud console. You need to know how to increase rate limits, manage quotas, etc.Youbooks uses your keys "heavilly" and over an extended period of time to produce a book, so, a free Gemini account will not cut it.

No Manus or Persplexity integrations and none planned for now. We have considered perplexity for gathering knowledge from the internet but we opted for bulk scraping because 1) perplexity gets expensive at "real" volumes, and 2) it introduces a second potential hallucination point which needs to be managed.