Is an AI sales agent really cheaper than hiring an SDR?

Yes. A fully-loaded US SDR runs roughly $85,000 a year (base, benefits, and tooling), and draws that base regardless of results. Sally by SallySells runs $42,000 a year ($3,500/month) for a book of up to 5,000 named accounts, with no commission. Net savings against a single SDR: about $43,000 a year. Most teams are not comparing against one hire, though: Sally also runs the live sales call and the close, which is an account executive at roughly $115,000 fully loaded, putting the realistic saving at about $158,000 a year.

Can an AI sales agent really replace a human SDR?

For the SDR job — building and watching a book of target accounts, inbound lead response, multi-touch follow-up, qualification, and getting the buyer onto a call — yes. Sally goes considerably further: she works a tiered book of up to 5,000 accounts per Sally the way an elite rep works a territory, watches every account for buying signals and moves the week one fires, takes the live sales call herself, handles objections, and closes standard, repeatable deals with your own payment link. You decide where she hands off — let her run the full cycle, take over at "ready to close," or have her run one qualifying call and hand you everything. Humans still take the deals that need real negotiation: enterprise legal redlines, pricing edge cases, seven-figure relationships.

How fast does an AI sales agent respond compared to a human SDR?

Sally responds in under a minute on every lead, 24/7/365. The average human B2B response time is 29 to 42 hours. 63% of B2B companies never respond at all. Leads contacted within five minutes are roughly 100× more likely to qualify than those reached after 30 minutes — and only 0.1% of B2B companies hit that five-minute bar.

What about ramp time?

A new SDR takes 3–6 months to become fully productive and reach quota. Sally goes live in about 48 hours, and most of it happens before you lift a finger: point her at your website and she researches your company, drafts a playbook, builds a sales deck from your own branding (pricing left blank — she never guesses a price), and rehearses ten realistic buyer calls against herself. Then she emails you her understanding of your business to confirm or correct. Connecting her mailbox is the entire go-live.

What does an AI sales agent NOT do that a human SDR does?

Sally closes standard, productized deals herself — contract or payment link. What she hands to humans, by your choice: pricing negotiation past your standard discount band, contract redlines and legal review, and signature on complex deals. Truly novel relationship-building — conferences, dinners, the prospect who only buys from people he golfs with — also stays with humans. Sally handles the work of watching and working a book that no human can hold at once, and closes the repeatable deals; humans handle the deal-by-deal nuance.

Compare

AI Sales Agent vs. Human SDR

Name: Sally by SallySells
Brand: SallySells

Full cost and performance comparison · Updated August 2026

The choice is no longer "should we hire another SDR?" but "should we hire another SDR or hire an AI salesperson for the same job?" This page lays out the cost, performance, and capability differences side-by-side, using publicly-known industry benchmarks for the human SDR figures and SallySells published pricing for Sally — an AI salesperson who works a tiered book of named accounts the way an elite rep works a territory.

Cost summary (Year 1)

Metric	1 fully-loaded human SDR	Sally by SallySells
Year 1 cash cost	~$85K (fully loaded)	$42,000 ($3,500/month, flat)
Commission	OTE/commission 30–50% of base	None
Tool stack they need to do the job	~$725/mo — data, Sales Navigator, CRM seats, mailbox infra, meetings, e-signature	Included — one system, no point tools
Onboarding / ramp	3–6 months to quota	About 48 hours to first reply
Hours worked	~40/week	24/7/365
Response time on inbound	29–42 hours average industry-wide	Under 1 minute on every lead
Follow-ups per lead	92% of reps stop before touch 5	6+ touches on every lead, every time
Languages for live demos	1 (rep's native)	40+ on demand
Attrition risk	High — median SDR tenure ~14 months	Zero
Annual savings vs 1 SDR	Baseline	~$43K
Annual savings vs SDR + account executive	~$200K baseline	~$158K

Human SDR figures reflect typical US SMB-loaded cost (base, OTE commission, benefits, tooling, ramp loss, manager overhead) at 2026 market rates. Source: aggregated public benchmarks (Bridge Group, SalesHacker, RepVue) and SallySells operator estimates.

What each one is actually good at

Capability	Human SDR	AI Sales Agent (Sally)
Inbound lead response	~Yes (with delay)	Yes — under 1 min
Personalized cold outreach	Yes (templated in practice)	Yes — written from scratch in your voice
Multi-touch follow-up cadence	Yes (frequently abandoned)	Yes — 6+ touches, no thread forgotten
Live product demo	Yes — when scheduled	Yes — on demand, multilingual
Objection handling	Yes	Yes — in your voice
Outbound prospect sourcing	Yes	Yes — builds the book from your data and her own research
Works a tiered book of named accounts	Yes — a few hundred at most	Yes — up to 5,000 per Sally, tier one watched weekly
Watches every account for buying signals	Sporadically — when there's time	Continuously, indefinitely — acts the week a signal fires
Close the deal (contract / payment link)	Sometimes (AE work)	Yes — closes standard deals herself
Sees revenue through to invoice paid	No — the CRM stops at closed-won	Yes — read-only Stripe / QuickBooks
Complex negotiation and legal redlines	Yes	Hands off to humans, with full brief
In-person events and golf	Yes	No

The three numbers that decide the comparison

1. Speed-to-lead. The most rigorously measured statistic in B2B sales: a five-minute first reply makes a prospect roughly 100× more likely to qualify than a 30-minute reply. The industry-average human response time is 29 to 42 hours. Only 0.1% of B2B companies are inside the five-minute window today. Sally is inside it on every lead, structurally.

2. Follow-up completion. 80% of B2B sales require five or more follow-ups. 92% of human reps give up before the fifth touch. 93% of converted leads are reached on touch six or later. Sally runs the cadence on every thread, every time, without fatigue or forgetting.

3. Fully-loaded cost. A single US SDR at SMB-loaded cost runs roughly $85,000 a year, and the account executive who takes the calls the SDR books roughly $115,000 — both drawing that base regardless of results. Sally is $42,000 a year ($3,500/month, flat) for a book of up to 5,000 named accounts, with no commission. Because she covers both jobs — she builds and watches the book and runs the call and the close — the honest comparison is against the two-hire stack: a difference of about $158,000 a year. Even against a single SDR she costs roughly $43,000 a year less.

When a human SDR is still the right answer

Hire a human if the buying motion depends on in-person presence — conferences, executive dinners, on-site evaluation. Hire a human if your deals are seven- and eight-figure enterprise sales where the relationship is the product. Hire a human if you sell into a regulated industry where every conversation must be conducted by a licensed professional. Outside those cases, hiring an additional SDR in 2026 is the more expensive of the two options for the same body of work.

How most teams actually deploy Sally

The most common configuration is not "AI replaces all humans." It is "Sally closes the standard, repeatable deals herself — and humans take the ones that need real negotiation." Sally owns the book: building it from your data and her own research, tiering it, watching every account for the moment to move, the one-at-a-time outreach from her own address on your domain, inbound response, follow-up, qualification, the live sales call, and the close on productized deals. The human team focuses on the deals that genuinely need a person at the table: enterprise pricing nuance, legal redlines, seven-figure relationships. And the prospect can ask for a human at any point in a call — Sally stops selling and the deal arrives as a structured Deal Brief, so nobody restarts at the beginning.

See it for yourself

Request access — tell us what you sell and who you sell to. Or read the broader comparison of AI sales agent tools.