The platform
Zendesk AI Agents
When I joined Ultimate (later acquired by Zendesk), the product was a deterministic bot executing decision trees. LLMs upgraded it into a hybrid of scripted and generative logic. Today it's a multi-agent system that reads procedures written in natural language, calls APIs, and resolves customer issues end to end for Netflix, Vimeo, Levi's, Reddit, and thousands of others. The whole arc took two and a half years.
01 · Deterministic
Dialog flows
Hand-built flows. Every path designed in advance.
02 · Generative
Zero-training bots
LLMs inside the dialog logic. Faster setup, same deterministic core.
03 · Agentic
Multi-agent systems
Reasons over procedures, calls APIs, resolves on messaging, email, and voice. Judged by evals.