Ascero AI Research · updated June 2026
Respond to a lead within 5 minutes and you are roughly 100× more likely to make contact than if you wait 30. About 78% of buyers go with whoever answers first. Yet the average business takes 47 hours to respond. This report compiles the speed-to-lead data — every figure attributed.
Free to cite (CC BY 4.0). Compiled from named studies; sources linked where authoritative.
This is a compiled report. The response-time-decay findings (the "5-minute rule," the 100× contact and 21× qualification multipliers) trace to Dr. James Oldroyd’s MIT analysis of thousands of leads, popularized by Harvard Business Review. Current-performance figures (the ~47-hour average, the ~23% within-5-minutes rate) are from the InsideSales / XANT Lead Response Management study; the real estate figure is from the National Association of Realtors. The "78% buy from the first responder" figure is a widely-cited lead-response benchmark. Where a figure is a widely-repeated industry benchmark rather than a single primary dataset, it is labeled as such rather than linked to one source.
See the companion Phone-Leakage Report for what those missed, slow responses cost by vertical.
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Under 5 minutes. Research popularized by Harvard Business Review (based on Dr. James Oldroyd's MIT analysis of thousands of leads) found that responding within 5 minutes makes a business roughly 100× more likely to make contact and 21× more likely to qualify the lead than waiting 30 minutes. After 5 minutes, the odds fall off a cliff.
Far too slow. The average B2B lead response time is about 47 hours (InsideSales / XANT study of 2,241 companies), only about 23% of companies respond within 5 minutes, and roughly 42% take longer than 24 hours. Real estate agents average around 15 hours (NAR), despite buyers overwhelmingly hiring the first responder.
Largely, yes. Industry lead-response benchmarks consistently find that around 78% of customers buy from the company that responds first, and a disproportionate share of sales go to the first business to make contact. Speed beats polish.
Automatically. An owner-operator cannot reliably answer within 5 minutes while running the business — but an AI voice agent can. It answers every call and web lead in seconds, 24/7, books the appointment, and routes anything it cannot handle, turning the 5-minute window from an aspiration into a guarantee.
Ascero AI builds an AI voice agent that answers every call and lead in seconds, 24/7, and books the appointment — so you are always the first responder. Flat monthly pricing, no per-call fees.