Foundational Concepts
Completion
The text an LLM generates to finish or respond to a prompt.
Definition
The term 'completion' comes from the original framing of language model tasks, where the model was asked to complete a piece of text. If you give a model the beginning of a sentence, it 'completes' it. This concept now covers any generated response — whether you're asking a question, issuing an instruction, or summarising a document. API documentation often refers to the model's output as a completion, regardless of whether you're literally completing text.
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Disclaimer
This definition is provided for educational and informational purposes only. It represents a general explanation of a technical concept and does not constitute professional, technical, or investment advice. Artificial intelligence is a rapidly evolving field; terminology, techniques, and capabilities change frequently. Coaley Peak Ltd makes no warranty as to the accuracy, completeness, or currency of the information provided. Nothing on this page should be relied upon as the sole basis for commercial, technical, legal, or investment decisions without independent professional advice.
Document reference: ISO_webpage_knowledge-base_glossary_v1
Last modified: 29 March 2026
Knowledge Base·Foundational Concepts·Completion