Simon Willison: Millisecond Converter Tool for LLM Prompt Timing

Simon Willison·low signal

Simon Willison released a small browser tool for converting millisecond values (the default unit LLMs report prompt durations in) to human-readable seconds and minutes. A micro-utility born from daily LLM development friction — the kind of builder-tool signal that shows where practical developer pain points live in the current AI workflow stack.