A: Hello.
1 - with Unlimited agency plan you will be able to create unlimited number of client accounts.
a - chatflows are chatbots designed with our chatbot builder. The chat flow can include AI as well.
b - This means you can have up to 15 agents for your own agency account. Your clients will also can have up to 15 agents. But this is only applicable to Basic Agency plan, with Unlimited Agency you can have unlimited number of agents.
c - 500 conversations / month - this includes bot-driven chats only (not applicable to Unlimited Agency plan, as you can set custom limits)
d - per workspace (not applicable to Unlimited Agency plan, as you can set custom limits)

2 a - all OpenAI models are supported, but please note that AI Assistant functionality requires assistants API https://app.screencast.com/TC74VNYtGd94s
2 b - Keys assigned per workspace. Limits can't be specified yet.
2 c - you can use files, website links, and internal knowledge base
2 d - you can use functions to transfer the chat to human agent
2 e - bot support all channels those you can connect to the unified inbox. Hovewer it's not yet support comments (only DMs).
2 f - we already have SMTP and IMAP connections (used for email-to-ticket functionality). And will consider to implement a channel based on those connections.

3 a - yes, you can do that
3 b - yes, no Anychat branding will be visible for your clients. You can also connect your SMTP to override our default outgoing email address.
3 c - yes, at this moment only Stripe is supported. You also can accept payments without Stripe account (using our Stripe account). But in this case we will take 30% fee.