Speed-to-lead comes before follow-up sequences.

From recent research. (1) Invoca, B2C Buyer Experience Report 2026 (June 2026): 56% of US buyers expect a business to respond within one hour after they submit a form, only 36% get a reply in that window, and 79% say they will switch to a competitor that responds faster (693 US consumers who recently made a high-stakes purchase). (2) Pied Piper, 2026 Lead Handling Effectiveness Home Services Study: across 3,211 evaluations of 31 of the largest home services brands (October 2025 to January 2026), the most common follow-up within the 24 hours measured was none at all (72% of the time); where booking was the natural next step, customers were offered an appointment only 28% of the time; and 42% of locations scored as ineffective interactions. (3) Hennessey Digital, 2025 study of more than 1,300 law firm websites: 25% of the law firms studied replied to online leads in under five minutes, and 26% did not reply at all. None of these publishes a decay curve, so the multipliers in this calculator, including the +30% ceiling for a sub-1-minute reply, are Nirvani's modeling assumptions.

Nothing. Five minutes is our recommended target, not a published cliff. Customers expect speed (56% of US buyers expect a reply to a form within an hour, per Invoca in 2026, and 79% say they will switch to a faster competitor), but no recent study pins the drop-off to an exact minute. Aim for under five minutes and treat an hour as the outer limit.

We interpolate logarithmically between anchor points we set (modeling assumptions, not published figures): 1 min = 1.30x, 5 min = 1.00x, 30 min = 0.55x, 1 hr = 0.40x, 4 hr = 0.20x, 24 hr = 0.10x, 48 hr = 0.05x. Log interpolation reflects that response time pain compounds non-linearly. The gap between 1 minute and 5 minutes matters less than the gap between 5 minutes and 1 hour, which matters less than the gap between 1 hour and 24 hours. Your effective close rate is the baseline close rate multiplied by your current bucket's multiplier.

The "% after business hours" slider rolls weekends, holidays, lunch, and overnight together. If you're open 9 to 5 on weekdays, you're closed 128 of the week's 168 hours (16 hours on each of five weekdays plus 48 weekend hours), about 76% of the calendar. Leads don't arrive evenly, so the share that actually lands after hours is usually lower than that, and it varies by industry. Pull your form and call timestamps and set the slider to match your reality, not the calendar.

Yes, almost always. The math of full automation is tempting but rarely the right answer for high-stakes industries (law, real estate, complex B2B sales). The hybrid model uses AI for first contact (immediate answer, qualifying intake, calendar booking) and routes the qualified, hot lead to a human closer who would otherwise have been mid-call. The goal is a fast first response on every inbound lead, not a fast reply on some and a 4-hour reply on the rest. Pure AI works for transactional verticals (appointment booking, simple service intake). Hybrid wins almost everywhere else.

It does, implicitly. The baseline close rate you enter is your blended close on all contacted leads, which already reflects whatever drip and re-engagement sequences you run. Speed-to-lead is a multiplier on top of that. One caution: buyers say speed wins them over (79% in Invoca's 2026 survey say they will switch to a faster competitor), but that is what people report, not tracked sales, and it gives no multiplier that transfers to your business. So applying the speed multiplier to your close rate is this calculator's assumption. Sequences raise close rate. Speed decides whether you reach the lead in the first place.