How long does it take to implement AI in a company?

The variable that moves the timeline most is not the model but the data and the task's variability: a clearly patterned task with accessible digital data pilots in two weeks; one with scattered or paper data can need months of preparation alone, and that should be known before starting, not discovered midway. It is exactly what the feasibility column of the use-case matrix scores.

The full 90-day plan, week by week and with what the employer must contribute (access, sponsorship, budget), is in the Chief AI Officer blueprint. And the reason for the quarterly rhythm afterwards is physical: feasibility changes with every model generation, so January's unfeasible case can be June's obvious one, and whoever rescores first captures first.