An AI that gives the same output for the same input and settings.
Deterministic AI is like a vending machine. Press B7, get the same sad granola bar every time.
You see it in approvals and risk checks. You also see it in factory controls. The goal is repeatability, not winging it.
Temperature
Lower Temperature usually makes AI answers more repeatable.
Symbolic AI
Symbolic AI uses rules, so it is often easier to predict.
Structured output
Structured output keeps the model inside a fixed format.
Hallucination
Deterministic AI can repeat a false answer too.