An AI BDR is software that starts conversations with people who have never contacted you: it finds them, researches them, writes to them and follows up. That is the usual meaning. The trouble is that vendors do not agree on it. One vendor's guide says an AI BDR does outbound and an AI SDR does inbound, and another vendor's guide puts the outbound job under the SDR name. So before you compare products, decide which job you need done, then check what each one does, whatever it is called.
This page is for someone shopping, not someone learning the human job titles. If you want that, SDR vs BDR covers the people. Here we cover the software, where the names break down, and seven checks that hold up whatever label is on the box.
Two vendors, two definitions
On 2026-10-30 I read two vendor guides on exactly this question. Fin's guide on AI SDRs and AI BDRs says an AI SDR "handles inbound lead qualification and engagement" and an AI BDR "automates outbound prospecting." AiSDR's guide to AI SDRs, BDRs and sales reps says an AI SDR is "an AI-powered tool that automates the process of identifying and reaching out to leads," and an AI BDR is a tool that "focuses on qualifying leads and building relationships with potential customers." Same two words, different jobs. If you buy on the label, you can end up with a tool that answers website visitors when you wanted one that starts conversations, or the other way around.
Neither is wrong, because there is no standard. The terms came from human sales teams, where companies also split the roles differently, and software marketing borrowed them. A page that says "AI BDR" tells you the vendor wants the search traffic. It does not tell you the product's job.
Sort by the job, not the label
| The job | Who starts it | What software does |
|---|---|---|
| Cold outbound | You | Finds people, writes first emails, follows up, books meetings |
| Inbound response | The visitor or form-filler | Answers fast, asks qualifying questions, routes or books |
| Reply handling | The person who answered your email | Reads the answer, replies, handles not-now and wrong-person |
| Account research for a human | Your rep | Prepares notes and drafts; the person sends |
Most products sold as an AI BDR do the first row and part of the third. Many sold as an AI SDR do the second. A few do all of it. Write down which rows you need before you read any product page.
Seven checks for any AI BDR
- Where does the list come from? From a plain description of your buyer, from your upload, or from a database the vendor owns? The first removes the most work. Ask how many of the first 25 names you would actually email.
- What does it use to personalize? Ask for three sample emails to real companies and check each fact against the company's website. A name and a job title in a template is merge-field filling, not research.
- Which address does it send from? Your own Gmail, a separate domain you set up, or the vendor's? This decides your deliverability and what happens to your reputation if you cancel.
- Does it stop on a reply? Test it. Reply to one of your own test emails from another address and see whether the next follow-up still goes out.
- Who answers the reply? If the answer is "you, from the inbox," the product is a sender. If it reads and answers, it covers more of the job.
- How does a meeting get booked? A link in an email is one way. A time offered and placed on your calendar is another. Know which you are buying.
- What is the price, and the term? On 2026-10-30, AiSDR's page listed $1.50 per person prospected on pay as you go, Salesforge's listed its Agent Frank AI SDR at $499 a month billed quarterly, and Artisan's and 11x's pages listed no price. Rocketship lists $12 to $1,499 a month. All of these pages can change.
A message you can send a vendor today
Instead of reading marketing copy, send this and compare the answers. It also tells you how fast and how plainly each vendor replies, which is information on its own.
"We sell scheduling software to independent veterinary clinics with two to five locations. We want to start conversations with owners we have never contacted. For a first week: (1) How do I describe my buyer, and what do I get back? (2) Show me three sample first emails to real clinics and what facts each uses. (3) Which email account do they come from? (4) What happens when someone replies? (5) How does a meeting reach my calendar? (6) What does the first month cost with a month-to-month term?"
A good answer is specific to veterinary clinics, shows the real emails and gives a price. A vague answer with a demo link tells you what the product is like to own.
When a person is the better buy
Software does the repeatable half of the work well. A person is better when you sell a few large deals a year to a short named list, because every message depends on a mutual connection or a specific event at the account. A person is also better when the buyer is hard to find online, or when your first ten customers will come from handshakes. If you have thirty named accounts, a handwritten note beats a sequence. If you need to reach 300 people you have not met, no one wants to write 300 notes, and that is where software earns its fee. The cost side of the human option is in how much an SDR costs.
What an AI BDR will not do
No product in this category runs the discovery call for you, negotiates, or closes a deal with a person on the other end. It also cannot fix an offer nobody wants. And it carries your legal exposure: the FTC's CAN-SPAM guide says the law makes no exception for business-to-business email, requires a physical postal address and honoring opt-outs within 10 business days, and hiring another company to send does not transfer responsibility. Our guide to whether cold email is legal goes through it.
When you are still deciding whether to do this with software at all, AI SDR vs human SDR lays out the trade.
Rocketship covers the cold outbound and reply-handling rows: you describe the buyer, it finds the people, reads each company's website, emails from your own Gmail, follows up, answers replies and books the meeting, and the plans on the pricing page start at $12 a month; it does not send from Outlook or send LinkedIn messages.