AltiSales vs Whistle Ltd

A head-to-head comparison of AltiSales and Whistle Ltd in sdr agencies, scored across the same 5 weighted criteria so you can see exactly where each agency is stronger.

AltiSales

Accelerate Your Outbound Revenue Machine

69/ 100 overallHigher score
Whistle Ltd

B2B lead generation and outsourced SDR services for fast-growing companies.

69/ 100 overall

Score-by-score

CriterionAltiSalesWhistle Ltd
Website Presence(20%)8282
Search Visibility(20%)5040
Trust & Credibility(20%)7478
Market Presence(15%)6362
Customer Satisfaction(10%)8490
Overall6969

Pricing at a glance

AltiSales

Model
Custom quote overall, with a mix of fixed-fee consulting/project packages, lead-volume-based data services, salary-percentage recruiting fees, and recurring retainer/subscription engagements for broader SDR / GTM programs. AltiSales also appears to sell larger ongoing programs such as retainer-based SDR/GTM engagements, but public pages do not publish those retainer amounts.
Typical range
$1,500-$75,000 per project
Full AltiSales pricing →

Whistle Ltd

Model
Custom-quoted outsourced SDR / appointment-setting engagements. The evidence points to a monthly service model for fully managed outbound SDR programs, plus a flexible staffing-style "Hire SDRs" offer; Whistle itself says pricing varies by scope depending on whether you hire SDRs, run full-service outbound, or need RevOps support.
Typical range
$5,000-$10,000+ / month
Full Whistle Ltd pricing →