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Cognism

CRM & Sales
Premium B2B sales intelligence platform with phone-verified contact data (Diamond Data), buying signal detection, and real-time API enrichment for European and global markets.
Cognism is known for Diamond Data — phone-verified mobile numbers and emails with industry-leading accuracy, particularly strong in European markets. It provides intent and signal data including hiring trends, funding rounds, and technographic changes to help identify in-market accounts with full GDPR/CCPA compliance.
Best for
B2B sales teams targeting European markets needing phone-verified contact data with GDPR compliance
b2b-datacontactsenrichmentprospectingGDPR
Last updated: February 27, 2026
25/50
Overall Score
API Quality
7/10
GTM Relevance
18/20
Pricingpaid
Complexitymedium
Learningmedium
Visit cognism.com →

API Analysis

REST API
✓
Available
Webhooks
✓
Available
GraphQL
—
—
OAuth
—
—
Rate Limits:1000 requests per minuteWebhook Reliability:goodDocs:https://developers.cognism.com/
salesforcehubspotpipedriveoutreachsalesloft

Pricing

paid
Platinum from $15K/yr + $1.5K/user/yr, Diamond from $25K/yr + $2.5K/user/yr

Strengths & Weaknesses

Strengths
Diamond Data phone-verified contacts deliver leading mobile number accuracy in EMEA
Strong GDPR and CCPA compliance with DNC list checking built in
Real-time API enrichment and batch data delivery to CRMs and data warehouses
Weaknesses
Expensive entry point — minimum $15K/year plus per-user costs
North American data less comprehensive than European market strength

Alternatives

ZoomInfoCompareApollo.ioCompareLushaCompareRocketReach

Reviews

G2 Reviews →Trustpilot →Capterra →
Homepage →Pricing →API Docs →Docs →

FAQ

What is Cognism?

Cognism is known for Diamond Data — phone-verified mobile numbers and emails with industry-leading accuracy, particularly strong in European markets. It provides intent and signal data including hiring trends, funding rounds, and technographic changes to help identify in-market accounts with full GDPR/CCPA compliance.

Is Cognism free?

Cognism is a paid product. Platinum from $15K/yr + $1.5K/user/yr, Diamond from $25K/yr + $2.5K/user/yr

What are Cognism alternatives?

Popular alternatives to Cognism include ZoomInfo, Apollo.io, Lusha, RocketReach. Compare features, API quality, and pricing on GTM Tools.

Does Cognism have an API?

Yes, Cognism provides a REST API. API quality is rated GOOD. Documentation: https://developers.cognism.com/.

Who is Cognism best for?

B2B sales teams targeting European markets needing phone-verified contact data with GDPR compliance