← All AI agents
Sales · Inbound · BDRAvailable · Live in 4 weeks

The SDR that never sleeps, never misses a lead.

Reads every inbound lead, researches the company in 30 seconds, sends a personal reply in 60, and books the meeting. Your reps walk in Monday morning to a calendar full of qualified calls.

Book a 20-min demoTalk to a strategist
★★★★★   4.9 · Used by 90+ B2B teams · Q1 cohort: 3 of 5 spots left
Agent profileAVAILABLE
RoleInbound SDR
Books3× more meetings
First reply<60 seconds
Live in4 weeks
Starting at$1,800/mo
Plays nice with
HubSpotSalesforceSlackCalendly
This weekSales SDR replied to 4,140 leads · booked 312 meetings · added $1.2M pipeline
Trusted by B2B teams at
NorthBridge
LOOPLEAD//
Quill SaaS
CARTWRIGHT
Oster & Co.
Steepled
What it does

Inbound that actually scales.

Outcome-led. Every row replaces work your SDR team currently does on Slack at 11pm.
Every inbound lead gets a personal reply

Within 60 seconds, in your team’s voice. Email, chat, form, LinkedIn.

Books meetings on the right rep’s calendar

Round-robin or rules-based routing. Sends invites + context briefs automatically.

Researches the company before replying

Pulls firmographics, recent news, tech stack, fundraising. All in 30 seconds.

Qualifies naturally, never spammy

Asks 2-3 contextual questions. Scores on budget, timeline, role, fit.

Updates your CRM in real-time

Every detail logged. Hot leads pinged to the rep on Slack. Stale leads flagged.

Hands off cleanly when needed

Knows when a human takes over. Writes a 2-line context summary.

Follows up until they book or unsubscribe

3 follow-ups across email + LinkedIn, spaced by behavior, not a fixed schedule.

Voice training

Won’t sound like a bot.

We train on your team’s actual reply history. Customers can’t tell. We run blind tests every quarter to keep it that way.
Before training
Day 1 — generic AI

“Hi there! Thank you for reaching out about our CRM solution. We offer a comprehensive suite of features designed to streamline your sales process. Would you like to schedule a demo?”

After training
Day 30 — trained on your team

“Hey Mark — Quick look at Northbridge: Series A, scaling fast. Yes, we work great for 12-person teams. Thurs 2pm or Fri 10am your time? I’ll send pricing + the 2-pager either way.”

Agent flow

Lead in. Meeting booked in 4 minutes.

Five-node loop. Listen, research, reply, book, log. Hot leads get pinged to your rep on Slack within minutes.
Step 01

Listen

Webhook fires the moment a lead arrives. Email, form, chat, LinkedIn.

Step 02

Research

Pulls firmographics, recent news, tech stack, fundraising in 30 seconds.

Step 03

Reply

Drafts a personal, contextual first reply in your team’s tone. Sends.

Step 04

Book

Offers two slots on the right rep’s calendar. Sends invite + pre-call brief.

Step 05

Log & follow up

Updates CRM. Pings rep on Slack. Schedules follow-ups by behavior.

Learns from your reps&rsquo; corrections
Sample week of output

What lands in your CRM by Friday.

A real week from NorthBridge. 312 leads in, 247 qualified, 84 demos booked.
Mon · enterpriseHot lead
“‘Procter & Gamble. 14 reps. Series E. Asked about SOC 2. Replied in 43s. Booked w/ Sarah Wed 11am.’”
Tue · qualifiedWarm lead
“‘Indie founder, 3 reps, $200K ARR. Replied. Sent pricing + case study. Awaiting reply.’”
Wed · politelyDisqualified
“‘Student researching for thesis. Sent the public docs link + thanked them. Tagged: not-icp.’”
Thu · 3rd nudgeFollow-up
“‘Mark (Northbridge). Ghosted after price sheet. Sent a 1-line nudge w/ a customer quote. Booked.’”
Plays nice with your stack

Works with everything you already use.

HubSpotSalesforcePipedriveGmailOutlookSlackCalendlyCal.comLinkedIn Sales NavigatorApollo
How we stack up

Sales SDR vs the alternatives.

Honest table. We&rsquo;ll tell you when a human SDR or chatbot is the right call.
Sales SDR Agent
Human SDR
Drift / Intercom bot
Monthly cost
$1,800–$3,500
$8K–$12K loaded
$200–$1,500
Coverage
24/7
9-5 only
24/7 (canned)
Avg first reply
<60 sec
4-24 hrs
Instant (templated)
Researches company
Yes, every lead
Yes, top leads
No
Books meetings
Yes, contextual
Yes
Calendar link only
CRM updates
Real-time
End of day
Limited
Follow-up cadence
Behavior-based
Manual + templates
Fixed sequence
Real customer · Real numbers

How NorthBridge 3×’d qualified demos in 5 weeks.

Same ad spend, same headcount. The SDR agent did the work.

Read NorthBridge&rsquo;s story
Qualified demos / mo3×
Avg first reply<60s
Signed to first ROI5 wk
The two questions everyone asks

Will it sound like a bot?

No. We train on your team&rsquo;s actual replies. Customers can&rsquo;t tell &mdash; and we run blind tests every quarter to keep it that way.

What if it qualifies incorrectly?

It learns from every rep correction. Week one we route generously; by week four it&rsquo;s better than your average human qualifier.

Pricing

Simple, fixed-price tiers.

Fixed monthly fee. No per-lead charges. Cancel after 30 days.
Best for 1-5 reps
Sales Starter
$1,800/mo

Up to 300 inbound leads/month, HubSpot or Salesforce, 1 rep handoff.

  • Up to 300 leads/mo
  • 1 CRM integration
  • Email + chat coverage
  • Slack alerts
  • Weekly report
  • Not included: LinkedIn coverage, multi-rep routing
Start with Starter
Best for 5-30 rep teams
Sales Growth
$3,500/mo

Up to 1,500 leads/month, multi-rep routing, custom qualification logic.

  • Up to 1,500 leads/mo
  • Multi-rep routing
  • Custom qualification
  • LinkedIn + chat coverage
  • Pipeline reporting
  • Priority support
Hire Growth
Best for 30+ rep orgs
Sales Enterprise
Custom

Unlimited leads, dedicated engineer, multi-region, on-prem option.

  • Unlimited volume
  • Multi-region
  • Dedicated engineer
  • SLA + compliance
  • Custom integrations
  • On-prem option
Talk to us
✓
14-day pilot
Plug it in, run on real leads, see if it converts.
✓
Cancel anytime after 30 days
Month-to-month. No multi-year lock-in.
✓
You own all conversations
Replies, CRM data, prompts &mdash; yours forever.
Quick math

What an AI SDR saves you.

Default is a 4-rep sales team at $80/hr loaded cost. Drag to fit yours.
Marketers on your team4 people
Blended hourly cost (salary + overhead)$80 /hr
Hours per marketer per week on repetitive content25 hrs/wk
Assumption: Marketing Agent automates ~65% of repetitive content work. Defaults reflect the median Steepled customer.
Estimated savings
$228K/yr
Net of agent fee · $19K/mo after subscription
Hours automated each week65 hrs
Gross saving (before agent fee)$23K/mo
Marketing Agent subscription$3.5K/mo
ROI543%
Numbers are an estimate. We’ll model the exact ROI for your team on the discovery call — with real workflows + tools.
From a customer running Sales SDR
★★★★★
“We were losing 40% of inbound leads because reps couldn’t follow up fast enough. The Sales Agent now replies in under a minute, books 3× more meetings, and our top rep can finally focus on closing. Better than a $90K SDR hire.”
SM
Sarah Mitchell
VP Sales · NorthBridge SaaS · London
3×
More qualified meetings
<60sec
Avg first reply
$420K/yr
Avg pipeline added
24/7
Always-on coverage
Available for new clients · Q1 2026

Stop losing inbound
to slow replies.

20-min demo. We&rsquo;ll plug in a dummy lead and show you a live reply on your own data.

Book a free 30-min callSee all agents →
★★★★★   4.9 / 5 from 100+ reviews   ·   Reply within 1 business day
Marketing Agent
Sales SDR · From $1,800/mo
Book a 20-min demo