Representative set
Cover the categories and nasty prompts customers will send.
Methods for measuring image API cost, latency, and reliability without disappearing failed runs, warm-ups, or discard rate from the chart.
One lucky success is not evidence. Use a representative prompt set, hold dimensions constant, separate warm-ups, keep failures, and report median, p95, sample size, model, date, and cost source.
Cover the categories and nasty prompts customers will send.
Keep rejections, timeouts, retries, and discards in the math.
State size, date, model, region, sample size, cost source.