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An honest comparison

AI SDR vs outsourced SDR: which model fits your business?

DIY AI SDR tools, outsourced SDR agencies and managed outbound do the same job in very different ways. Here is who does the work in each, what you can inspect, and where Deligatr does and does not fit.

See the comparison →Talk to Deligatr

At a glance

Who does the work in each model

Setup, research, copy and replies, as set out in the comparison below.

  • DIY AI SDR tool

    Software you run yourself

    • Setup

      You

    • Research

      You

    • Copy

      You

    • Replies

      You

  • Outsourced SDR agency

    A human team on your behalf

    • Setup

      Agency team

    • Research

      Agency team

    • Copy

      Agency team

    • Replies

      Agency team

  • Deligatr managed outbound

    Human plus AI

    • Setup

      Deligatr

    • Research

      AI

    • Copy

      People

    • Replies

      AI and people

  • You
  • Agency team
  • Deligatr
  • Deligatr people

Three models

What each one actually involves

No model is right for everyone. Each has real strengths and real limits.

DIY AI SDR tools

Software you run yourself, such as AiSDR, Instantly, Artisan or 11x

What works

  • Lowest outlay: AiSDR, for example, publishes plans from $250 to $2,500 a month
  • Full control over every campaign decision
  • A good way to build outbound skill in-house

The limits

  • Setup, warm-up, copywriting, monitoring and reply handling all land on you
  • The same four to six week warm-up applies to you
  • Results depend on how well you execute

Verdict

Right for operators who want to build outbound expertise in-house and have time every month to run it. Wrong if you are already at capacity.

Outsourced SDR agencies

Traditional B2B sales development firms with human teams

What works

  • Human reps who handle nuance and context
  • Suited to complex, high-touch sales
  • No tools for you to learn or manage

The limits

  • Each agency sets its own prices, so quotes vary
  • Onboarding and ramp time vary by agency
  • Quality depends on who is staffed on your account, and how much you can inspect

Verdict

Right for complex, relationship-led sales that need human reps at every stage. Check who owns the data and what you can inspect before you sign.

Managed outbound

Deligatr: AI for research and scale, people for copy and judgement

What works

  • AI research with human writers and a person approving every sequence
  • Live in about one week with about an hour of your time
  • $2,500 a month on monthly billing, or less with quarterly and annual billing
  • Calls, email and LinkedIn, running continuously

The limits

  • Less hands-on control than DIY. Delegation takes trust
  • First meetings typically arrive in weeks four to six, not week one
  • Not suited to consumer products or a customer worth too little to repay the cost of winning one

Verdict

Right for established B2B businesses that want a qualified pipeline without managing tools or hiring. Results depend on your market, your offer and what a customer is worth to you.

Side by side

Every factor compared

  • Covered for you or inspectable
  • Varies or depends
  • Lands on you
  • Same either way

  • Cost

    Varies or depends:

    DIY AI SDR tools

    Tool fees only. AiSDR, for example, publishes $250 to $2,500 a month

    Varies or depends:

    Outsourced SDR agency

    Priced by the agency. Ask for a quote

    Covered for you or inspectable:

    Deligatr managed

    $2,500 a month on monthly billing, no long-term commitment. Less with quarterly or annual

  • Who does the work

    Lands on you:

    DIY AI SDR tools

    You

    Covered for you or inspectable:

    Outsourced SDR agency

    The agency’s SDR team

    Covered for you or inspectable:

    Deligatr managed

    AI researches, people write, review and run it

  • Setup and infrastructure

    Lands on you:

    DIY AI SDR tools

    You build it

    Covered for you or inspectable:

    Outsourced SDR agency

    The agency builds it

    Covered for you or inspectable:

    Deligatr managed

    We build it, with about an hour of your time

  • Warm-up and first meetings

    Same either way:

    DIY AI SDR tools

    Four to six weeks of warm-up, then first meetings

    Same either way:

    Outsourced SDR agency

    The same warm-up. Timelines vary by agency

    Same either way:

    Deligatr managed

    Live in about one week, warm-up four to six weeks, first meetings typically weeks four to six

  • Copy and replies

    Lands on you:

    DIY AI SDR tools

    You write every sequence and qualify every reply

    Covered for you or inspectable:

    Outsourced SDR agency

    SDRs write and handle replies

    Covered for you or inspectable:

    Deligatr managed

    Human-reviewed copy. AI and a human team handle replies

  • What you can inspect

    Covered for you or inspectable:

    DIY AI SDR tools

    Everything, because you run it

    Varies or depends:

    Outsourced SDR agency

    Varies. Ask who owns the data

    Covered for you or inspectable:

    Deligatr managed

    Live dashboard, DeliHub and a weekly review call

  • What you still do

    Lands on you:

    DIY AI SDR tools

    Setup, copy, monitoring, replies, scheduling

    Varies or depends:

    Outsourced SDR agency

    Brief them and review reports

    Covered for you or inspectable:

    Deligatr managed

    ICP workshop, approve messaging, attend meetings

Weighing any of these against hiring a person? See outsourced SDR versus an in-house hire. Full pricing is on the pricing page.

What matters more than AI vs human

What triggers the outreach

A tool or an agency working a static list sends the same sequence to everyone. Signal-based outbound reaches an account because something has just happened that makes your offer relevant. It is the approach we have built, and it is as much a question of method as of who does the sending.

01

First-party signals

Where DeliChat is running on your site and the visitor’s consent allows, it identifies the company behind a visit and scores intent from page views, return visits and replies.

02

Trigger signals

Research pulls recent company triggers such as role changes, funding rounds and hiring before a sequence is written.

03

Engagement signals

Opens, clicks and replies feed the same score. Replies are qualified against your ICP, timing, budget and role before a meeting is booked.

The same for every model

Authentication and warm-up are the same for every model

Fully authenticated means SPF, DKIM and DMARC together. Microsoft guidance on warm-up is four to eight weeks.

2.7 times

more likely to land in the inbox for fully authenticated domains than unauthenticated ones

4 to 6weeks

Warm-up for new sending domains, whichever model you choose

Source: Saleshandy, analysis of 53.1 million cold emails, January to June 2026.

AI personalisation

AI personalisation alone is not the win

What 13.2 million LinkedIn connection requests showed. Specific, real references did the work.

12%

Lower acceptance with AI hyperpersonalisation

Flat

Reply rate with AI hyperpersonalisation

1.8 to 2.7times

Acceptance for notes that referenced a real shared tie, against the 30.2% baseline

Source: Expandi, 13.2 million LinkedIn connection requests.

We make no claim about a specific reply-rate uplift. It changes relevance and timing. Human writers write and a person approves every sequence before it sends. Read how it works in our guide to signal-based outreach, what the evidence says in AI SDR: what it does and where it fails, and the whole system on our B2B lead generation services page.

Decision guide

Which model fits your situation

  1. 1

    Do you want to build outbound expertise in-house, with someone who can give it time every month?

    DIY AI SDR tools

    You run the software. The same four to six week warm-up applies, on top of your own setup time.

  2. 2

    Is your sale complex, with long cycles, several stakeholders and relationships that need a human rep at each stage?

    An outsourced SDR agency

    Human reps handle the nuance. Check who owns the data and what you can inspect before you sign.

  3. 3

    Does one new customer, or a few repeat orders, pay for the service, and do you want pipeline without managing a system or hiring a team?

    Managed outbound

    AI research, human-reviewed copy and setup in about a week. First meetings typically arrive in weeks four to six.

  4. None of these fits? Talk to us anyway.

    Managed outbound is not suited to consumer products or to a customer worth too little to repay the cost of winning one. On a discovery call we will say plainly if it is not the right fit.

Choose DIY AI tools if

  • You want to build outbound expertise in-house
  • Someone on your team can give it time every month
  • You are comfortable with DNS, email authentication and deliverability
  • You can wait out the four to six week warm-up as well as your own setup time

Choose an SDR agency if

  • Your sale is complex, with long cycles and several stakeholders
  • It depends on deep relationships that need a human rep at each stage
  • You have the budget for a human team and patience for a longer ramp
  • You have checked who owns the data and what you can inspect

Choose managed outbound if

  • You want pipeline without managing a system or hiring a team
  • One new customer, or a few repeat orders, pays for the service
  • You want setup handled in about a week
  • You want AI-assisted outreach with human-reviewed quality

Managed outbound suits established B2B businesses. Browse the industries we work with, or see how qualified meetings are booked in B2B appointment setting.

Common questions

Before you decide

What is the real difference between an AI SDR and an outsourced SDR?+
An AI SDR tool gives you software and the rest is your job. An outsourced SDR agency gives you a human team that works on your behalf, priced by the agency. Managed outbound, which is what Deligatr provides, combines the two: AI does the research and scale, and people write, review, qualify and book. It is neither software you operate nor a traditional agency, although we also sell the software (DeliMail, DeliReach) for teams that want to run it themselves.
How much does an AI SDR cost compared with an outsourced SDR agency?+
DIY tools publish their own prices. AiSDR, for example, lists plans from $250 to $2,500 a month. On top of the fee, setup, warm-up, copywriting, monitoring and reply handling all land on you. Outsourced SDR agencies set their own prices, so ask for quotes. Deligatr managed outbound is $2,500 a month on monthly billing with no long-term commitment, or $6,000 per quarter or $18,000 per year paid up front.
Which outbound model is fastest to a first meeting?+
Every model needs the same four to six week warm-up for new sending domains (Microsoft guidance is four to eight), so first meetings typically arrive in weeks four to six whichever you choose. The models differ in who does the work. Deligatr is live in about one week with about an hour of your time, while DIY tools put setup, copy, monitoring and replies on you.
Does AI personalisation make outreach perform better?+
Not by itself. In Expandi’s data on 13.2 million LinkedIn connection requests, AI hyperpersonalisation lowered acceptance by 12% and left reply rate flat, while connection notes that referenced a real shared tie (a follow, a group or a shared network) were accepted at 1.8 to 2.7 times the 30.2% baseline acceptance rate. That is why Deligatr uses AI for research and speed, then has people write and approve each sequence around a real trigger.
What does a signal-based approach add?+
Signal-based outbound means reaching an account because something just happened that makes your offer relevant, instead of working a cold list in bulk. It changes relevance and timing, and means fewer irrelevant touches. We make no claim about a specific reply-rate or meeting uplift. In 6sense’s 2025 research (nearly 4,000 buyers), 95% bought from their Day One shortlist, which is why being relevant at the right moment matters.
Should I hire an in-house SDR instead?+
It depends on whether you can manage and keep a rep. The Bridge Group’s 2025 report (351 B2B companies, mostly North American software) puts median in-house SDR on-target earnings at $80,000, before benefits, tools, management and recruiting, with a 3.0 month average ramp, 40% median annual attrition and 1.9 years average tenure. Our outsourced SDR page sets hiring against outsourcing in full.
Can managed outbound replace a human SDR entirely?+
For many B2B businesses it can cover the top-of-funnel work a human SDR would: research, outreach, reply qualification and meeting booking. Your team picks up from the first qualified meeting. For enterprise sales with complex, multi-stakeholder buying, a mix of managed outbound and human account executives is often the right answer.
What kind of business is managed outbound best for?+
Established B2B businesses where one new client covers multiple months of the service. It is not suited to consumer products or to a customer worth too little to repay the cost of winning one. Results depend on your market, your offer and what a customer is worth to you, and on the discovery call we tell you plainly what we would expect in your market.

Made your decision?

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Keep reading

B2B lead generation services →

The full managed outbound system.

Outsourced SDR →

Replacing or avoiding an SDR hire.

B2B appointment setting →

How qualified meetings get booked.

How managed outbound works →

The process, stage by stage.