Hiring your first SDR vs buying an AI SDR

Buy an AI SDR first if you do not yet know which audience and offer work, because a person costs about $9,500 a month by our estimate and takes about three months to ramp, while an AI SDR costs about $1,215 a month once you count your time. Hire a person when the playbook is proven, deals need a human first conversation, or volume exceeds what you can review. Many teams end up with both.

The first sales hire is one of the most expensive decisions a small company makes, and it is often made before the company knows what the hire should say. This post is for the founder at that point. The full cost model and its sources are in the ROI post. Here we focus on the decision.

What does a first SDR cost?

Our estimate, built from published sources and labelled as one: the Bridge Group 2025 report puts median SDR target earnings at $80,000, and the BLS puts benefits at 30% of employer compensation in private industry. That gives about $114,000 a year, or $9,500 a month, before recruiting, software, equipment and management. It is a floor. A median SDR manager's target earnings are $146,000 in the same report, a cost most first hires do not have, which means you are the manager.

Then time. Average ramp is 3.0 months, and average tenure is 1.9 years, so about an eighth of the time in the job is ramp. The median monthly quota is 10 held meetings, and only 60% of SDRs reach quota, the lowest in that study's history. On those figures the cost per held meeting is about $950 at quota and about $1,900 at half of quota, in steady state, and higher in year one.

What does an AI SDR cost?

The software is a fact: a LinkedIn agent is $198 a month per agent for one to two agents, email starts at $39, and bundles run from $249 to $1,199. The person is an estimate: you, reading threads, setting the audience and taking calls. At five hours a week costed at the BLS private industry average of $46.89 an hour, that is about $1,015 a month. The total is about $1,215 a month, or about $1,265 with a bundle.

The shape of the budget is the point. The software is the small part. The attention is the cost, and unlike a hire, it scales down when the agent has learned your rules.

What does each one do well?

When should you buy an AI SDR first?

• You do not know yet which audience or offer converts. A test costs a month of software, not a quarter of salary.
• You are a solo founder or a small team, and your time is the scarce resource.
• You need to test several segments quickly.
• You want coverage at all hours.

On our own account the audience decided meetings per person tenfold, with the same agents. That is what you want to learn before you hire someone to do it.

When should you hire a person first?

• The playbook is proven, written down and a person can follow it.
• Deals need a human voice from the first message, for example enterprise or highly relational sales.
• Volume is larger than you can review.
• You have a manager ready, and a plan for the first 90 days.

What about both?

This is what many teams do. A common split:

• The AI SDR runs the volume: invitations, openers, follow ups and the routine replies.
• A person takes the first call, qualifies, handles the exceptions and closes.
• The person reads the flagged conversations and keeps the rules current.

On our own LinkedIn outbound 93% of replied conversations since May 2026 ran with no human message, and a person took the meetings. The agent did not replace the person. It changed where the person's time goes. A founder who used the agent for discovery calls on his own LinkedIn booked 19 calls from 935 conversations while still building his products (ShortVibe).

What does the first 90 days cost each way?

Using the estimates above, a made up comparison for a founder deciding in January. These are Sellinger's arithmetic on published sources, not quotes.

The 90 day figure for the person is three months at the floor cost, and it ignores recruiting and the weeks it takes to find someone. The point is not that one is cheaper in total. It is that the AI SDR buys you the answer to "what should a person say?" at a fraction of the price.

What should you ask before you hire?

1. Can I write the pitch on one page? If not, a hire has nothing to follow.
2. Do I know my best audience? Our data showed audience changes meetings per person tenfold, so a hire sent to the wrong list is a costly test.
3. Who will manage them? At median target earnings of $146,000 for an SDR manager in the Bridge Group report, a manager is a cost of its own, and without one you are the manager.
4. What is my plan for month 4? The average ramp is 3.0 months, so the first real result lands after it.

What should you ask before you buy an AI SDR?

1. Who reads the threads? The software is the small cost. If nobody has five hours a week, the result will be poor.
2. Which rules will I write down? Price, scope and what you do not sell. The agent stops when it cannot answer, and a person decides.
3. What does a good result look like in 30 days? Define it in held meetings, not replies (count meetings honestly). Messaging modules include a 30 day free trial with no card.

What about the worst case in each?

A hire who does not work out costs months of salary and a search. An AI SDR that does not work costs a month or two of software and your attention, and you can cancel or change modules at any time with no lock in contract. That asymmetry is the reason to run the cheap test first when you do not yet know the answer.

Which do you choose?

If you are still unsure, apply the rule above: buy a month, learn, then hire to take the meetings. For the full model, use the ROI calculator with your own figures, and read the ROI of an AI SDR vs a human SDR for the sources.

A simple rule

1. If you cannot say in one sentence who your buyer is and what they get for 15 minutes, do not hire. Buy a month of an AI SDR and learn.
2. If you can, and a month of AI outreach produced held meetings, hire a person to take them and to run the playbook.
3. If your volume is small, keep the AI SDR and do the calls yourself.

Check the figures with your own inputs in the ROI calculator, and see the side by side in AI SDR vs human SDR. All costs above are estimates except Sellinger's list prices, checked on 19 October 2026.