Conversation API

Conversation API is a pragmatic choice when you need to ship conversational AI quickly and don't want to manage a database yourself. The free sandbox tier is generous for experiments and small projects, and the API is dead simple—pass a conversation_id, get back history. Where it falls short is scalability and transparency. Paid tiers are contact-sales only, so for high-volume apps you can't self-serve a price. Also, data residency is limited to EU and US regions—no Asia, no on-prem. If your app needs strict data sovereignty outside those, this isn't for you. Compared to a DIY approach with OpenAI + PostgreSQL, Conversation API saves you the database setup but costs more at scale. For very low volume, the free tier wins. For production above a few thousand conversations, you'll want to negotiate a custom plan. In practice, we like it for internal tools, MVPs, and demos. It's not built for real-time, low-latency stuff like live transcription—that's not its design. We'd pass if you need fine-tuning or full control over the model stack. The broader Amarsia platform especially targets accounting firms with sovereign AI—but the Conversation API itself is generic. If you're in that vertical, the signup bonus (Blue J-like tax assistant) adds value. Bottom line: a well-executed, focused API with a free tier that removes a real pain point. Just know the pricing wall and region limits before you commit.