Most companies take hours to reply to a web lead, and many never do. AI agents now call, qualify and book the meeting in minutes. What the research says, which tools do it and what they cost.
Among those that replied within 30 days, the average reply took 42 hours. What the research says
A lead fills in your form, then waits. Most companies take hours to reply, and many never do. AI agents now phone new leads within minutes, ask your qualifying questions and book the meeting while the lead still remembers why they asked. This guide covers what the research says about speed, the tools that make the call, what they cost, and the US rules for calling leads with an AI voice.
Outcraft AI pays us a commission if you sign up through our links, and other vendors here may too. Outcraft comes first because it reports a median first response under 30 seconds, publishes per-lead prices starting at $300 a month, and covers calls, texts, email and WhatsApp in one price; most rivals sell annual contracts or quote only. For tools that make calls, we weigh what one price covers and how much you would have to set up yourself ahead of the entry price. How we compare.
Why the first minutes matter
One of the most-cited studies is Harvard Business Review's “The Short Life of Online Sales Leads” (March 2011). The authors sent a web lead to 2,241 US companies and timed the replies (HBR):
37% responded within an hour, 16% within 1 to 24 hours, and 24% took longer than a day.
23% never responded.
Among companies that replied within 30 days, the average reply took 42 hours.
In a second dataset of 1.25 million leads at 42 US companies, firms that tried to reach a lead within an hour were nearly seven times as likely to qualify it (have a meaningful conversation with a decision maker) as firms that waited even an hour longer, and more than 60 times as likely as firms that waited a day or more. One of the authors ran InsideSales.com, a company that sold sales software.
The well-known “call within five minutes” advice comes from a 2007 conference presentation by InsideSales.com and researcher James Oldroyd. Across about 15,000 leads at six companies, the odds of reaching a lead fell 100 times, and the odds of qualifying it 21 times, when the first call came at 30 minutes instead of five (Lead Response Management study). Those are odds of a conversation, not of a sale, and six companies is a small sample.
Newer tests, all run by companies that sell response tools, find the same habit. RevenueHero filled in demo forms at 1,000 B2B software companies in 2024, and 63.5% never replied (RevenueHero). Workato requested demos from 114 companies; only 31% responded by phone, and none called within five minutes (Workato).
One number we left out: “78% of customers buy from the business that responds first” appears on many vendor pages, but we couldn't find an original source for it.
What an AI lead caller does
Calls in seconds or minutes. Outcraft reports a median first response under 30 seconds (Outcraft).
Qualifies. It asks your questions about need, timing, budget and role. Outcraft asks up to seven before it hands a lead over.
Books. It puts the meeting on the right rep's calendar, following your routing rules.
Follows up. If the lead doesn't pick up, it tries again by text, email or WhatsApp.
Hands off. Leads who need a person go to your team with the call notes.
The same agents often cover the rest of the funnel too: calling free-trial users who stall, recovering failed payments and answering inbound calls. For online stores, see AI abandoned cart recovery calls.
The options
1
Outcraft AI
A done-for-you AI sales agent with published per-lead prices: it calls, texts, emails and messages new leads on WhatsApp, qualifies them and books the meeting, from $300 a month.
Price
$300 / month for up to 100 leads; $2,000 for 751 to 1,000; $1.36 a lead at 2,500
Also calls trial users who stall, recovers failed payments and answers inbound calls.
Outcraft's case study: Warmy, an email software company, booked 5 times more weekly sales meetings once Outcraft called new trial users about 5 minutes after sign-up.
In a testimonial on Outcraft's site, Omnisend's director of sales and partnerships calls it “a force multiplier for our go-to-market team”. (Omnisend is also an Outcraft integration partner.)
Watch for
Only 14 reviews on G2 (4.8 average).
Its FAQ promises a free plan, while its terms describe a free trial that turns into a paid plan. Check the limits when you sign up.
SOC 2 and HIPAA are listed as in progress, not certified.
Its terms make you responsible for getting leads' consent to AI calls.
For larger sales teams: an AI agent that phones, chats with and texts inbound leads, then books meetings into your reps' calendars, on annual contracts.
Price
From $5,333 / month billed annually (Growth Voice, 2,000 calls)
Channels
Phone, chat, SMS, WhatsApp
Rating
G2 4.4 from 33 reviews, across 11x's products
Why it fits
Its pages promise a call-back within one to two minutes.
Built for mid-market and enterprise B2B teams.
Watch for
Annual contracts by default.
In March 2025 TechCrunch reported that 11x had listed companies as customers that said they had only trialled it; 11x said it removed inaccurate mentions.
For companies with heavy website traffic that run on Salesforce: an AI SDR that talks to visitors on your site by chat, voice or video and books meetings before they leave.
Price
Quote only
Where it works
On your website, plus email follow-up
Owner
Salesforce, since April 2026
Rating
G2 4.9 from 1,560 reviews
Why it fits
Catches the lead while they're still on the site.
Watch for
We found no outbound phone calling: it talks to visitors on your site and follows up by email. Pair it with a caller if most leads arrive through forms and ads.
For consumer-lead businesses such as home services, mortgage, insurance and real estate: it texts new leads within seconds, follows up by email and voice, and can move the conversation to a call with its AI voice agent or your team.
Price
Quote only
First reply
Under 15 seconds on average (its claim)
Rating
G2 4.9 from 42 reviews
Why it fits
Books appointments and live-transfers ready leads.
Watch for
Text-first: the first contact is a text, not a call.
HighLevel Voice AI calls leads back, follows up and books into calendars inside HighLevel. Plans cost $97 to $497 a month, and voice AI is billed per minute on top: $0.045 for the voice engine plus $0.015 to $0.17 for the voice itself, plus model and phone charges (HighLevel).
Assistable.ai, built for HighLevel, calls, qualifies and follows up with leads from $97 a month plus $0.07 a minute.
Hatch, for the trades, places an AI qualification call to each new lead and books into ServiceTitan; pricing is a platform fee plus usage, by quote. See our guide for HVAC companies.
Smith.ai calls back web leads with its AI receptionist backed by people, or with live North America-based agents, from $300 a month, billed per call.
We left out Air AI: the FTC sued its makers in August 2025, alleging deceptive claims about business growth, earnings and refunds. In March 2026 they agreed to a proposed settlement that would ban them from marketing business opportunities (FTC, FTC).
What it costs
Option
Published price
What you get
Outcraft AI
$300 / mo for 100 leads; $2,000 for 1,000
Calls, texts, email, WhatsApp; unlimited seats
11x Julian
From $5,333 / mo, billed annually
2,000 calls a month
Chili Piper
$1,250 / mo, billed annually
Instant routing to human reps, 15 seats
HighLevel
$97 to $497 / mo + AI minutes
CRM with voice AI billed per minute
Assistable.ai
From $97 / mo + $0.07 / min
AI calls inside HighLevel
Smith.ai call-back
From $300 / mo
AI with human backup, or live agents; billed per call
Qualified, Verse, Conversica, Hatch
Quote only
Ask for a price at your lead volume
Prices from each vendor's pricing page, checked 1 October 2026. Outcraft's prices for volumes between 100 and 750 leads, and between 1,000 and 2,500, are set by a slider on its pricing page.
The simplest test: one extra meeting a month has to cover the bill. At $300 a month for up to 100 leads, Outcraft costs $3 a lead.
US calling rules for AI lead calls
A summary, not legal advice; have a lawyer check your forms and scripts.
AI voices count as artificial voices. In February 2024 the FCC ruled that the TCPA covers calls made with AI-generated voices (FCC 24-17).
Calls about buying need written consent. FCC rules require prior express written consent for telemarketing calls that use an artificial voice, to mobile numbers and home landlines alike (47 CFR 64.1200). A demo request asks you to get in touch; put the consent wording on the form so the call is covered.
B2B is not exempt. TCPA lawyers say B2B marketing calls made with an artificial voice always need express written consent, and B2B calls to cell phones fall under the Do Not Call rules (TCPAWorld).
The 2026 twist. A federal appeals court ruled in February 2026 that the law itself allows oral as well as written consent (Bradford). It binds courts only in Texas, Louisiana and Mississippi, though a Maryland federal court has since followed it (Womble Bond Dickinson). Written consent remains the safe standard nationwide.
More AI rules may come. The FCC has proposed requiring callers to say at the start of each call that it uses AI-generated technology. It was still a proposal when we checked (Federal Register).
What the form needs, under the FCC rule (47 CFR 64.1200(f)(9)) and TCPA lawyers' guidance (Klein Moynihan Turco): your company's name; a clear statement that you may make marketing calls and send texts using automated technology and an artificial or prerecorded voice (name the AI voice too, as the FCC has proposed); that agreeing isn't a condition of purchase; a phone number the lead types in; and a stored record of the consent. Lawyers also advise a separate, unchecked box (Javitch Law Office). Example wording to show your lawyer:
[ ] I agree that [Company name] may call and text me at the number above about my request and its products, including marketing calls using automated technology and an AI-generated (artificial) voice. Agreeing is not a condition of purchase. Reply STOP or tell the caller to opt out at any time.
On the call, the AI should say your company's name at the start and, within two seconds, explain how to opt out by voice or key press. It should also say it's an AI and give a call-back number. On an opt-out, it should end the call at once and add the number to your do-not-call list. Outcraft's terms put getting consent, and making the AI identify itself, on you (Outcraft terms).
Set-up checklist
Every lead source connected: website forms, chat, ad lead forms, inbound calls. Outcraft connects through your CRM, Zapier, Make or its API.
Qualifying questions written down, with the answers that disqualify a lead (students, competitors, wrong country).
Calendar rules: which rep gets which lead, meeting length, buffers.
Handoff rules: when the AI transfers the call or alerts a rep instead of booking.
Consent wording on every form that feeds the AI.
Quiet hours in the lead's time zone, so a form filled at 11 p.m. gets a text and a call the next morning.
Measured: time to first call, contact rate, meetings booked, meetings held, and pipeline per lead.
Test plan for the trial
Submit a demo request yourself and time the first call.
Answer as a strong lead and check the meeting lands on the right calendar with notes in your CRM.
Answer as a student or a competitor. It should politely disqualify you.
Ask about pricing. It should give only the prices you approved.
Ask for a person. It should transfer you or book a call with one.
Say “don't call me again” and check nothing follows.
Submit a form at 11 p.m. in another time zone.
Don't answer, and check the follow-up texts and emails.
The time between a lead asking to hear from you (a form, a chat, a call) and your first real contact. The shorter it is, the more leads you reach: in Harvard Business Review's 2011 study, firms that tried within an hour were nearly seven times as likely to qualify the lead as firms that waited even an hour longer.
How fast should you respond to a new lead?
Within minutes. A 2007 study of six companies found the odds of reaching a lead fell 100 times between a 5-minute and a 30-minute first call. AI callers can call within seconds or minutes; Outcraft reports a median first response under 30 seconds.
Is the “call within 5 minutes” statistic real?
It comes from a real 2007 presentation by InsideSales.com and researcher James Oldroyd: about 15,000 leads at six companies. It measured the odds of reaching and qualifying a lead, not of making a sale, and the data came from a company selling sales software. The direction matches the larger 2011 HBR study.
Can AI call my leads for me?
Yes. Outcraft, 11x and HighLevel's voice AI call new leads, ask qualifying questions and book meetings. You need the lead's consent to calls with an AI voice, collected on the form.
Is it legal to use AI to call leads?
Yes, with consent. The FCC treats AI voices as artificial voices under the TCPA, and its rules require prior express written consent for sales calls that use one, to mobiles and home landlines alike. B2B leads on mobile phones are covered too.
How much does an AI SDR cost?
Outcraft costs $300 a month for up to 100 leads and $2,000 for 1,000. 11x's Julian starts at $5,333 a month on an annual contract. HighLevel-based setups cost from about $97 a month plus per-minute AI charges. Qualified, Conversica and Verse quote only.
Is an AI SDR better than a human SDR?
For the first call, usually: it calls within seconds or minutes, any day of the week (within legal calling hours), and follows up on every lead it's given. People are still better at complex, high-value deals. SaaStr's Jason Lemkin suggests starting the AI on the leads your team ignores and budgeting 60 to 90 days of daily tuning.
What is an AI appointment setter?
An AI agent that calls or texts leads and books them into your calendar. Agencies and service businesses often build one in HighLevel or with Assistable.ai; Outcraft and 11x do it for sales teams.
Will leads mind talking to an AI?
Some will. In a Gartner survey of 5,728 customers (December 2023), 64% said they'd prefer companies didn't use AI for customer service, and the top worry was reaching a person. So say it's an AI, keep calls short, and make it easy to get a human.
Can it call leads from Facebook or Google lead ads?
If your lead source can send leads to your CRM, Zapier or Make, these tools can pick them up. Outcraft connects to all three.
What should the AI do if a lead asks for a person?
Transfer the call or book a time with a rep, straight away. A lead who asks twice and still gets the AI is a lost lead.
Sources
Oldroyd, McElheran and Elkington, “The Short Life of Online Sales Leads”, Harvard Business Review, March 2011
Elkington and Oldroyd, “Lead Response Management”, InsideSales.com, 16 October 2007 (MarketingSherpa summit slides)
RevenueHero, B2B lead response test of 1,000 companies (20 March 2024); Workato, lead response study of 114 companies; both vendors
Outcraft AI: B2B solution page, pricing, FAQ, integrations, terms, and the Warmy and Omnisend case studies (vendor-published)
11x, Qualified, Verse, Chili Piper, HighLevel, Assistable.ai, Hatch and Smith.ai pricing and product pages; G2 ratings; TechCrunch, 24 March 2025; FTC press releases on Air AI, August 2025 and March 2026
Javitch Law Office on prior express written consent (2026); Womble Bond Dickinson on Bradley v. Dentalplans.com (31 March 2026)
FCC 24-17 (8 February 2024); 47 CFR 64.1200; FCC proposed rule 24-84 (Federal Register, 10 September 2024); Bradford v. Sovereign Pest Control of TX (5th Cir., 25 February 2026); TCPAWorld; Klein Moynihan Turco
Gartner press release, 9 July 2024; SaaStr, 11 March 2026. All prices and ratings checked 1 October 2026