Tom Regan

Posted on Mar 11 Edited on Oct 18 Originally published at artemisgtm.ai

Building a B2B Sales Intelligence Stack: 7 Tools Tested in Production

#startup #saas #productivity

The Problem

Most B2B teams run more GTM tools than they can name, and a good share of them deliver no measurable return. The problem is usually fit, not features: teams buy tools that don't match their stage, their main bottleneck or the stack they already run.

After implementing the major sales intelligence tools in hands-on client builds, here's a practical evaluation of the 7 tools that keep delivering measurable pipeline impact.

The Stack Architecture

A modern B2B sales intelligence stack has four layers:

Layer 1: IDENTIFICATION. Who is on your site?
  - Warmly, RB2B

Layer 2: ENRICHMENT & OUTBOUND. How do you reach them?
  - Amplemarket, Apollo

Layer 3: REVENUE INTELLIGENCE. How do you convert them?
  - Attention, Sybill

Layer 4: CRM. Where does the data live?
  - Attio

Tool-by-Tool Breakdown

Prices below are as published on each vendor's pricing page in March 2026. Check the vendor for current pricing.

Layer 1: Website Visitor Identification

Warmly: $700/mo

RB2B: From $197/mo (free tier)

Layer 2: Sales Engagement & Data Enrichment

Amplemarket — From $600/mo

Apollo: From $49/mo (free tier)

Layer 3: Revenue Intelligence

Attention: From $59/user/mo (free tier)

Sybill: From $29/user/mo (free tier)

Layer 4: CRM

Attio: From $29/user/mo (free tier)

Feature Comparison Matrix

Feature	Warmly	Amplemarket	Attention	Sybill	Attio	Apollo
Primary Use	Visitor ID	Outbound + enrichment	Call coaching	Call intelligence	CRM	Prospecting + data
AI Capabilities	AI chatbot	Duo Copilot	Real-time coaching	AI summaries	Auto-enrichment	Email suggestions
Free Tier	No	No	Yes	Yes	Yes	Yes
Starting Price	$700/mo	$1,200/mo	$59/user	$29/user	$29/user	$49/mo

Stage-Based Stack Recommendations

$1M-$5M ARR (Early Stage):
  Warmly + Apollo + Attention
  ~$1,500-$2,500/mo | 3-4 tools

$5M-$15M ARR (Growth Stage):
  Warmly + Amplemarket + Attention + Attio
  ~$3,000-$5,000/mo | 4 tools

$15M-$50M ARR (Scale Stage):
  Full stack, configured per GTM motion
  ~$4,000-$8,000/mo | 4-5 tools

Implementation Priority

Identify your biggest revenue leak (anonymous traffic? outbound volume? call quality? CRM data?)
Implement the tool that directly addresses that leak
Measure pipeline impact for 30 days
Add the next tool only after the first is producing measurable results

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