Speed to lead statistics, fact-checked
The best evidence on speed to lead comes from a 2011 Harvard Business Review audit of 2,241 US companies: 37% replied to a web lead within an hour, while 23% never replied at all. Firms that tried to reach leads within an hour were nearly seven times as likely to qualify them as firms that waited even one hour longer.
Speed-to-lead numbers get repeated so often that their sources disappear. We traced each one back to the original study, noted the sample and year, and rated how much weight it can carry. A few of the most quoted figures don't have a source at all.
Updated · Ventix AI Team
Key speed to lead statistics
| Statistic | Source | Sample | Reliability |
|---|---|---|---|
| 37% of companies responded to a web lead within an hour; 23% never responded | Harvard Business Review, 2011 | 2,241 US companies, one test lead each | Strong |
| Average response time was 42 hours (among companies that responded within 30 days) | Harvard Business Review, 2011 | Same audit | Strong, with that qualifier |
| Contacting within an hour made qualifying a lead nearly 7x as likely as an hour later, and 60x as likely as after 24 hours | Harvard Business Review, 2011 | 1.25M leads at 42 US firms | Strong to medium |
| Calling within 5 minutes vs 30 minutes: 100x the odds of contact, 21x the odds of qualifying | Lead Response Management Study, Oldroyd with InsideSales.com, 2007 | About 6 companies, 15,000+ leads | Medium: vendor data, not peer reviewed |
| Calling within 1 minute increased conversion by 391% | Velocify (Leads360), 2012 | About 3.5M leads, 400+ companies | Medium to weak: baseline unclear |
| 7% of B2B companies responded within 5 minutes; 55% took over 5 business days or never replied | Drift, 2017 | 433 B2B companies, secret shop | Medium |
| 63.5% of B2B companies never responded to a demo request; average response 1 day 5 hours | RevenueHero | 1,000 B2B websites, secret shop | Medium |
| 47% of online property inquiries went unanswered; median response 39 minutes | Mike DelPrete, 2024 | 100+ inquiries across 25+ brokerages | Medium |
| Only 56% of calls to businesses are answered by a person | Invoca, 2026 | 70M+ calls across 10 industries | Strong for its customer base |
| Law firms answered 40% of calls, down from 56% in 2019 | Clio Legal Trends, 2024 (reported by ABA) | Secret-shopper calls to law firms | Strong |
Sources: HBR: The Short Life of Online Sales Leads (2011); RevenueHero lead response times report; Mike DelPrete: 47% of online property inquiries are ignored (2024); Invoca Lead Conversion Benchmarks Report 2026
Speed to lead myths: popular statistics with no real source
These figures appear on hundreds of sites. None of them traces back to a published study with a sample and method.
"78% of customers buy from the first company to respond"
Usually credited to a "Lead Connect" survey, but there's no published report, sample or method, and pages cite at least four different origins.
"35% to 50% of sales go to the first vendor to respond"
It's credited variously to InsideSales.com and to a Google and CEB white paper, but we couldn't find the figure, a sample or a method in any published study.
"HBR says respond within 5 minutes"
The 2011 HBR article doesn't mention 5 minutes. The 5-minute figure comes from the 2007 InsideSales study, a much smaller vendor dataset.
"85% of callers won't call back"
Widely quoted for missed calls, but we couldn't find a primary source. Use measured answer-rate data instead.
What the research actually supports
- Faster is better, and the drop-off starts within the first hour, not the first day.
- Most businesses are slow: across studies, a large share respond after hours or never respond at all.
- Phone matters for high-intent leads: a large share of calls to businesses still aren't answered by a person.
- The exact multipliers (21x, 100x, 391%) come from vendor datasets. Quote them with their source and year, not as universal laws.
How to respond to leads faster
The only reliable way to hit a sub-minute response is to automate the first touch. An AI voice agent can call a new web, ad or portal lead within about 60 seconds, ask your qualifying questions and book the appointment, then hand the hot ones to your team. For inbound calls, an AI receptionist answers every call on the first ring, so no lead sits in voicemail.
Frequently asked questions
What is speed to lead?
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Speed to lead is the time between a prospect raising their hand, such as submitting a web form or calling, and your first meaningful response. Shorter response times are consistently linked to higher contact and qualification rates.
What is the 5-minute rule for leads?
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It's the advice to contact a new lead within five minutes. It comes from the 2007 Lead Response Management Study by Oldroyd and InsideSales.com, which found far higher contact and qualification odds at 5 minutes than at 30. It's directionally supported, but based on a small vendor dataset.
What is the average lead response time?
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In Harvard Business Review's 2011 audit, companies that responded within 30 days took 42 hours on average, and 23% never responded. More recent secret-shopper studies of B2B companies and real-estate brokerages still find many leads ignored entirely.
Is "78% of customers buy from the first responder" true?
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We couldn't verify it. The figure is usually credited to a "Lead Connect" survey, but no report, sample or method has been published. It's safer to cite the Harvard Business Review 2011 findings instead.
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