Side-by-side record

SDRx vs. SourceStack

Built from each tool’s researched, reviewed record. Figures are checked against public pricing pages at research time — always confirm current pricing with the vendor before buying.

The short version

SDRx starts at $40 per seat, versus SourceStack at $249.

Full comparison

	SDRxfrom $40 per month	SourceStackfrom $249 per month
Audyense Score	50AS*Low	32AS*Low
Positioning	AI SDR for account-based outreach, research, and follow-up.	SourceStack is a job data service designed for recruitment businesses.
Free tier	No	Yes
Deployment	Cloud / SaaS	Cloud / SaaS
Best fit	Startup, SMB, Mid-market	Startup, SMB, Mid-market
Pricing plans	—	FreeFree BasicCustom pricing BusinessCustom pricing Unlimited$249
AI-built ICP lists from a large prospecting database	Yes	—
LinkedIn outreach automation	Yes	—
Autonomous end-to-end outbound execution	Yes	—
Hyper-personalized 1:1 email generation using CRM/LinkedIn data	Yes	—
Adaptive multi-step follow-up sequencing	Yes	—
Automated account and competitor research	Yes	—
Email deliverability management (warmup, DMARC/DKIM, inbox rotation)	Yes	—
Instant access to ATS jobs	—	YesDocumented in the sourced profile.
Customize data search filters	—	YesDocumented in the sourced profile.
Download data in one click	—	YesDocumented in the sourced profile.
Export to multiple formats	—	YesDocumented in the sourced profile.
Pay only for used data	—	YesDocumented in the sourced profile.
Support for global employers	—	YesDocumented in the sourced profile.
Data enrichment	—	YesDocumented in the sourced profile.
Prospecting Database	—	YesDocumented in the sourced profile.
Integrations verified	—	4+
Aggregate rating	5.0 · 6 reviews	— · No reviews yet
Integrations	CRM syncEmailLinkedIn	MakeLinkedInAirtableAPI
Security & compliance	—	—
Pros	Deep account research focus. Personalized outreach over multiple channels. Transparent product positioning around AI SDR workflows.	Documented capability: Instant access to ATS jobs Documented capability: Customize data search filters Profile names a concrete ICP: SourceStack is recommended for recruitment businesses that need custom job datafeeds with up-to-date job posts from 398 ATS data sources. It helps you Public profile names Make, LinkedIn, Airtable as connected workflow surfaces
Cons	Review volume is still early. Not positioned as a broad GTM platform.	Pricing and usage limits should be rechecked before purchase Fit is strongest for the stated Startups, SMBs, Mid-market audience rather than every team Named integrations should be validated against the team's exact plan and workflow Reported outcomes and vendor claims should be validated with the buyer's own data
	Visit SDRx ↗	Visit SourceStack ↗

Editorial read of this comparison

The table summarizes structured facts; this section explains what the differences mean for a real buying decision.

Where each tool fits, and where it may not

SDRx

SDRx is an AI SDR built for B2B sales teams that need deep account research and personalized multi-channel outreach at scale. It focuses on target lists, message personalization, and iterative follow-up over weeks rather than one-shot blasts.

A particularly good fit for: Sales teams running account-based outbound. Founders and growth teams that need research-heavy prospecting.

May be a poor fit if: Teams looking for a generic CRM. Very small teams that only need a simple send engine.

SourceStack

SourceStack is a job data service designed for recruitment businesses. It collects job listings from 405 ATS sources, offering 12.9 million jobs each month. The tool provides access to data from 952,000 employers across 174 countries, with 68 customizable data fields. Users can filter jobs by keywords, categories, and over 68 attributes to find exactly what they need. SourceStack is ideal for recruiters and HR tech companies that want real-time job listings. It delivers fast results by instantly updating job data on demand. You can download data in formats like CSV, Google Sheets, XML, or use a REST API for seamless integration. The tool fits smoothly into your go-to-market stack by enriching recruitment software, job boards, or CRMs with fresh job data. It is not meant for candidate sourcing or managing applicants, focusing solely on job data feeds. This makes SourceStack a targeted solution for powering recruitment with accurate, customizable job information. ▶ Video Review Coming Soon We're working on creating a detailed video review for SourceStack .

A particularly good fit for: recommended for recruitment businesses that need custom job datafeeds with up-to-date job posts from 398 ATS data sources. It helps you filter and download job Startups, SMBs, Mid-market teams with a defined revenue workflow prospecting database

May be a poor fit if: Teams looking for a single-purpose tool outside its documented go-to-market focus Teams that need unlimited usage without plan or credit limits

Pricing and plan structure

SDRx: Published starting price $40 per month

Audyense does not have a verified public tier breakdown for this record. Confirm the current quote, seat model, usage limits, and contract terms with the vendor.

SourceStack: Published starting price $249 per month

FreeFree
BasicCustom pricing
BusinessCustom pricing
Unlimited$249 quote

Capabilities worth validating

SDRx: AI-built ICP lists from a large prospecting database, LinkedIn outreach automation, Autonomous end-to-end outbound execution, Hyper-personalized 1:1 email generation using CRM/LinkedIn data, Adaptive multi-step follow-up sequencing Integrations include CRM sync, Email, LinkedIn.
SourceStack: Instant access to ATS jobs, Customize data search filters, Download data in one click, Export to multiple formats, Pay only for used data Integrations include Make, LinkedIn, Airtable, API.

Questions to answer before switching

Does SDRx's selected plan include the features and limits we need?
Does SourceStack's selected plan include the features and limits we need?
Does the exact integration path for CRM sync, Email, LinkedIn support the sync direction, permissions, and volume we need?
Is a hosted-only deployment acceptable for the team and customers who will use this system?

How to evaluate this shortlist

A useful comparison turns the differences between Sales & CRM tools into a concrete test. Use these steps to avoid choosing from a feature table or the lowest headline price alone.

Start with a representative Sales & CRM workflow, not a feature checklist. Define who will use it, what data goes in, and what outcome the team needs.
Test the complete path through CRM sync, Email, LinkedIn: permissions, sync direction, failure handling, and volume limits often matter more than the integration name.
Compare the cost of the real scenario, including users, usage, storage, support, and contract requirements. The entry price alone does not measure adoption cost.
Before switching, list the evidence gaps, request a demo of the critical workflow, and confirm security, data residency, export, and support with each vendor.

Structured signals help narrow the shortlist, but a trial with a real workflow is still the best way to validate the decision.

Research basis

Last checked: 2026-08-26. Pricing, integrations, feature support, and review signals can change, so treat this as a research snapshot and verify the final decision with the vendor.

Sources consulted: SDRx product site, Product Hunt, SDRx; SourceStack product site, ColdIQ profile, Vendor website