AI SDR vs hiring an SDR: cost and when to pick each

By bravabase · Updated 10 November 2026

An AI SDR is software that does the research-heavy part of sales development: finding leads, checking fit, getting contact details and drafting outreach. A human SDR does that too, plus live calls, objections and judgment in messy situations. For most small B2B teams, an AI SDR is the cheaper and faster place to start. Hire a person once your messaging works and you have more good conversations than you can handle.

What an SDR actually does

A sales development rep (SDR) fills the calendar for whoever closes deals. The job breaks down into:

• Research: find companies and people who fit, and a reason to contact them now.
• Contact details: work emails and phone numbers.
• First outreach: emails, LinkedIn messages and calls.
• Follow‑ups: the second, third and fourth touch most deals need.
• Qualifying: a short call to check fit, need and timing.
• Handoff: a booked meeting with notes for the closer.

The first four are where an AI SDR does most of its work. The last two still need a person, often the founder.

What each costs

According to Bridge Group’s 2025 SDR Metrics Report (checked November 2026), which surveyed 351 B2B companies, the median SDR earns about $80,000 a year at target (around $55,000 base and $25,000 variable). The average SDR takes 3.0 months to ramp and stays 1.9 years, and 60% hit quota.

That’s roughly $6,700 a month in pay at target, before benefits, payroll taxes, data and sending tools, recruiting and the manager’s time. An AI SDR is a monthly subscription, usually priced per seat with usage credits. Check what’s included: contact details, sending, seats and how many leads it finds.

Want to see your own numbers? The lead generation cost calculator includes your time and shows what each qualified conversation really costs.

What an AI SDR does well

• Research at volume. It checks every company that matches your profile, every day.
• Speed on signals. It spots a new hire or funding round and has a lead ready while the news is fresh. See buying signals.
• Consistency. Every lead gets the same fit check and the same evidence.
• Never forgets a follow‑up. The next step is always on the list.
• Low cost to start. No recruiting, no ramp, cancel when it doesn’t pay.

What a human SDR does well

• Live conversations. Calls, objections and reading the room.
• Relationships. Events, introductions and the trust that comes from talking.
• Complex deals. Many decision-makers, long cycles and politics.
• Learning the market. Bringing back what buyers say to your offer and product.

Where each falls short

• AI SDR: needs a clear ideal customer profile, writes generic messages if nobody reviews them and can’t take a call.
• Human SDR: costs the most, takes months to ramp, often moves on within two years and spends much of the day on research and admin.

How to choose

Start with an AI SDR when:

• you sell yourself and have no sales team yet;
• you need more of the right conversations, not someone to hold them;
• your deal size doesn’t yet cover a salary;
• you want to test a new market or offer quickly.

Hire an SDR when:

• your messaging already gets replies and meetings;
• you have more qualified conversations than you can handle;
• your buyers expect phone calls;
• you sell complex deals to large companies and can support a three-month ramp.

Or do both: give your SDR an AI SDR for research and first drafts, so their time goes into conversations.

Try an AI SDR in two weeks

1. Write your ICP with the ICP template.
2. Pick two signals that match your offer.
3. Review leads for 15 minutes a day. Keep or skip each one.
4. Approve every message before it goes out. Use the personalization frame as your check.
5. Follow up across channels with the multi-channel plan.
6. Count replies and conversations, then compare cost per conversation with what a hire would cost.

How Brava works as your AI SDR

Brava is your personal AI agent in bravabase. It learns your business from your website, finds leads by the buying signals you pick, scores each one 0–100 against your offer, finds work emails and phone numbers, drafts personal outreach and replies for you to approve, and plans your day. Nothing goes out without you.

It costs $99 per user per month, with 500 quality leads a month, 1,500 AI credits and two always-on discovery agents, and you can try it free for 7 days. Brava gets you to the conversations; you have them. See Brava and pricing.