WhaleChat vs. Substy
Substy is a combination of CRM and AI chatbot for OnlyFans and Fanvue, often hybrid with human chatters for VIPs. WhaleChat AI is an AI chatter for 4based and Maloum with a focus on chats in German.
Transparency: This comparison is published by WhaleChat. We have tried to present it fairly and rely only on public information for other vendors (sources below). As of November 2026. Details can change, so check directly with each vendor.
| Criterion | WhaleChat AI | Substy |
|---|---|---|
| Platforms | 4based, Maloum | OnlyFans, Fanvue |
| Language / market | German, DACH focus | International |
| Price | Individual, personal conversation | Not public |
| Specialty | Trained on over 2 million chats, own tone per model, personal onboarding | CRM, chatter management, AI for smaller fans and humans for VIPs |
What sets Substy apart
According to product listings, Substy targets small and mid-sized agencies. Besides AI chat it offers management for chatter teams with access rights and per-chatter reporting. A hybrid model is typical: The AI takes fans below a spending threshold, human chatters look after VIPs.
What sets WhaleChat apart
WhaleChat takes over fan communication on 4based and Maloum completely, around the clock and in German. The AI recognises whales itself and gives them more attention. It was trained on over 2 million chats and setup happens personally.
Who fits what?
- Substy: Agencies on OnlyFans or Fanvue that want to keep their existing chatter team and complement it with AI.
- WhaleChat: Agencies on 4based and Maloum that sell in German and want to cover the chat without their own team.
FAQ
Does Substy support German-speaking platforms?
According to public information, Substy works on OnlyFans and Fanvue. WhaleChat AI is built for 4based and Maloum.
Do you still need chatters with WhaleChat?
Not for ongoing fan communication. Strategy, content and model management remain tasks for the agency.