Cognism vs Exellius: Which B2B Data Platform Deserves Your Budget?
Your renewal quote came in 15% higher, and now you're shopping. If you're weighing Cognism against Exellius, you're comparing two very different animals - the enterprise incumbent versus the scrappy self-serve newcomer. They solve different problems for different buyers, and here's where each one actually delivers.
30-Second Verdict
Enterprise teams selling into EMEA: Cognism. Diamond Data's phone-verified mobiles and DNC filtering across 15 countries are hard to replicate.
Bootstrapped teams testing outbound: Exellius. The $59/mo Basic plan gets you 6,000 credits with no annual lock-in.
Feature Comparison at a Glance
| Dimension | Cognism | Exellius | Edge |
|---|---|---|---|
| Starting price | ~$22,500/yr (5 users) | $0/mo (free tier) | Exellius |
| Database size | Diamond Data (phone-verified subset) | 100M+ verified contacts; Datarade listing cites 181M+ emails, 75M+ phones | Exellius (volume) |
| Accuracy | Diamond Data (human-verified mobiles) | Claims range from 95% to 98% depending on which page you read | Cognism |
| Free plan | No | Yes, 75 credits/mo | Exellius |
| Contract | Annual, upfront | Monthly, cancel anytime | Exellius |
| Intent data | Yes (up to 12 intent topics on Elevate) | No | Cognism |
| GDPR compliant | Yes | Yes | Tie |
| Tracxn score | Established | 29/100 | Cognism |
Cognism wins on data quality and stability. Exellius wins on accessibility and price. Neither wins on everything.
Cognism Overview
Cognism's core value is Diamond Data: phone-verified mobile numbers that a human has actually called and confirmed. That's a real, auditable process, and it matters when your reps are dialing into EMEA where bad numbers waste hours. The platform ships with intent data covering up to 12 topics on the Elevate tier, plus DNC filtering in 15 countries.
The pricing is where things get uncomfortable. A 5-user Grow deal runs roughly $22,500/year, paid upfront. Elevate pushes past $37,500. Add onboarding at $500-$1,500 and intent topics at $200-$400/topic/year, and a small team is staring at $25K-$45K all-in before anyone's sent a single email. The "unlimited" access comes with a fair-use cap around 2,000 records per user per month, and expect 10-15% annual renewal increases.
Here's the thing: you're locked into an annual contract before you've verified the data works for your ICP. That's a $22K bet.
- Wins: EMEA mobile coverage, compliance infrastructure, intent data bundling
- Tradeoff: High floor price with no way to test at scale before committing
You shouldn't need a $22,500 annual contract to get phone-verified mobiles and intent data. Prospeo delivers 125M+ verified mobiles with a 30% pickup rate, Bombora intent data across 15,000 topics, and 98% email accuracy - starting at $39/mo with no lock-in.
Get Cognism-level data without the Cognism-level invoice.
Exellius Overview
Exellius positions itself as an all-in-one B2B data platform combining lead discovery, email verification, phone intelligence, enrichment, technographics, and - uniquely - Amazon seller intelligence. The company markets "100M+ verified contacts" on its site, while its Datarade listing cites 181M+ email contacts and 75M+ phone contacts.
Credit-based pricing is straightforward: Free (75 credits), Basic ($59/mo, 6,000 credits), Growth ($119/mo, 13,000 credits), Professional ($199/mo, 25,000 credits), and Enterprise (custom). Unused credits roll over for three months, and there's no annual lock-in.
But the accuracy claims don't line up across their own pages. The homepage promotes 98%, while the advanced email verifier page lists 95%. Even the free verification allowance contradicts itself - 10 free verifications per month in one spot, 50 emails/month in another. When a vendor can't keep their own marketing consistent, we start wondering what else isn't buttoned up.
- Wins: Self-serve pricing, no contracts, Amazon seller data niche
- Tradeoff: Founded in 2021, 26 employees, $37.8K in annual revenue as of early 2025, unfunded - the product works, but the company is early-stage by any measure
Head-to-Head Breakdown
Pricing
The gap is enormous. Cognism doesn't publish pricing publicly, which tells you exactly how their sales process works. Exellius starts at $0 and maxes at $199/mo before enterprise custom pricing.
Let's break down the math. At Cognism's fair-use cap of 2,000 records/user/month across 5 users, that's 120,000 records/year for $22,500 - roughly $0.19/record. Exellius Professional gives you 25,000 credits/month for $199, working out to about $0.008/credit. Even if each lead costs multiple credits, Exellius is an order of magnitude cheaper per contact.
Data Quality
Cognism's Diamond Data is the gold standard for phone-verified mobiles. A human calls the number, confirms it connects to the right person, and marks it verified. That process is transparent, auditable, and worth the premium for teams that live on the phone.
Exellius' accuracy story is muddier. Contradicting yourself across your own site - 98% here, 95% there, different free verification limits on different pages - is a red flag. The underlying methodology of SMTP validation, disposable detection, and accept-all handling is table stakes for any verification tool in 2026. Nothing about it stands out.
Vendor Stability
This is where the comparison gets lopsided. Cognism has an established market presence with real enterprise customers. Exellius was founded in 2021, has 26 employees, reports $37.8K in annual revenue as of early 2025, carries no outside funding, and scores 29/100 on Tracxn. Their Datarade listing shows a 4.9/5 rating across just 3 reviews, and there's no visible G2 or Capterra presence.
If your deal sizes are under $15K and your team is fewer than 5 reps, you almost certainly don't need Cognism-level infrastructure. But you also shouldn't bet your pipeline on a vendor with $37.8K in annual revenue. The smart move is finding the middle ground.
The Verdict
Choosing between Cognism and Exellius comes down to your stage and budget.
Enterprise EMEA teams who need compliant, phone-verified data and can absorb the contract: Cognism.
Solo founders and bootstrapped SDRs testing outbound on a budget: Exellius Basic at $59/mo, but audit the data quality yourself before scaling. We've seen too many teams trust accuracy claims at face value and torch their domain reputation in the process.
A Third Option Worth Considering
Prospeo sits in the gap between a $22K enterprise platform and an unproven startup. The database covers 300M+ professional profiles with 98% email accuracy and 125M+ verified mobiles hitting a 30% pickup rate. Data refreshes every 7 days - not the 6-week cycle most competitors run. It also includes Bombora intent data tracking 15,000 topics, matching Cognism's intent capability without the enterprise contract.
Paid plans start around $39/mo at roughly $0.01 per email, with a free tier of 75 emails/month, no annual contracts, and self-serve onboarding that doesn't require a sales call. Our team has tracked results across customers like GreyScout, who saw bounce rates drop from 38% to under 4% and pipeline jump 140% after switching - the kind of numbers that make both Cognism and Exellius hard to justify at their respective price points.
If you're building a repeatable outbound motion, pair your data source with a clear lead generation workflow and track lead generation metrics so you can see whether "accuracy" is actually showing up in replies and meetings.
Contradicting accuracy claims across your own site is a dealbreaker. Prospeo's 98% email accuracy is backed by a 5-step verification process with catch-all handling, spam-trap removal, and a 7-day data refresh cycle. 300M+ profiles, self-serve pricing at ~$0.01/email, zero annual contracts.
Stop gambling your domain reputation on inconsistent data.
FAQ
Does Cognism offer a free plan?
No. You'll book a demo, negotiate an annual contract, and pay upfront. The smallest team deals start around $22,500/year for 5 users. A 25-lead sample is available during the sales process, but there's no self-serve free tier.
Is Exellius reliable for enterprise use?
Enterprise procurement teams will likely flag the vendor-stability gap. With 26 employees, $37.8K in annual revenue, no outside funding, and a Tracxn score of 29/100, Exellius works for small-scale testing but carries real vendor risk at scale. If your procurement team runs a standard vendor assessment, Exellius probably won't pass.
What's a good alternative if neither Cognism nor Exellius fits?
Prospeo offers 98% email accuracy, 125M+ verified mobiles, and a 7-day data refresh with a free tier, Bombora intent data covering 15,000 topics, and no annual contracts. Plans start at ~$39/mo with self-serve onboarding, making it the strongest middle ground between enterprise cost and startup risk.