In more detail
Temperature is a dial controlling how adventurous a model’s word choices are. At every step the model holds a list of candidate next words. Low temperature makes it grab the safest, most likely option; high temperature lets it gamble on the less obvious ones.
It matters because it’s the creativity-versus-reliability trade-off in a single number. Legal summaries and factual answers want it low — dependable and repeatable. Brainstorming and fiction want it higher, where the surprises live. Many AI tools quietly set it for you based on the task.
Goes with