Skip to content

Glossary | AI & Development

System Prompt

Developer supplied instructions that set an AI model's role, rules and behaviour at a higher priority than ordinary user input.

Browse all definitions

In detail

System prompt is the common name for instructions supplied by an application developer to define a model's role, constraints, output format and rules. Depending on the provider and API, these may be called system instructions, developer messages or simply instructions. They are given higher priority than ordinary user messages. A customer service prompt might cover tone, approved sources, prohibited actions and the output format used for a handoff.

Sources and further reading

Check the source, not just the summary

Apply the definition

Want to talk through how this applies to your business?

Start with the decision in front of you. We will help map the fit.

Straight answers. No pitch deck. No commitment.