A: Hi there!

Thanks so much for your thoughtful message and your interest in Tier 4 — great to hear you're enthusiastic about using First Book ai!

Here are answers to your questions:

1) Do we use GPT-4.5?
We don’t use GPT-4.5 specifically. We work with a curated combination of top-tier models, primarily based on OpenAI, designed to create long-form, structured business books — not just chat-style answers.

2) Which models do we use?
We mainly rely on OpenAI’s LLMs, with some adjustments made to ensure full-book coherence. This isn’t a ChatGPT-style tool. Our system is built to generate a full-size business book with flow and consistency — from page 1 to page 200 — which most standard LLMs can’t do on their own.

3) Public roadmap & upcoming features?
For Q3 and Q4, we’re focusing on adding:

- More flexibility during the creation process (e.g. tone options, real-world anecdotes, etc.)

- A full-service publishing add-on (proofreading, layout, graphics, and support for platforms like Amazon where AI content restrictions exist)

Would that kind of support be of interest to you?

Just a quick reminder: you can test as many book outlines as you’d like, and only use a book credit when you’re ready to generate a full book. That way, you’re in full control.

If you have any more questions or feedback, feel free to reach out to us at hello@firstbook.ai.

Best regards,
Casper