What is the difference between Clearbit and Apollo.io?

Clearbit focuses on Data enrichment and is freemium, while Apollo.io specializes in Contact database and is freemium. Both are AI Sales tools.

Is Clearbit or Apollo.io better?

It depends on your needs. Clearbit excels at Accurate data, while Apollo.io is known for Massive contact database. Compare their features above to decide which fits your workflow.

Clearbit vs Apollo.io

AI Sales tools comparison · Updated 2026

Choosing between Clearbit and Apollo.io? Both are popular AI Sales tools. Clearbit starts at Freemium and focuses on Data enrichment. Apollo.io starts at Freemium and specializes in Contact database. Here's a detailed side-by-side comparison to help you decide.

At a Glance

	Clearbit	Apollo.io
Category	AI Sales	AI Sales
Pricing	freemium	freemium
Starting Price	Freemium	Freemium
Best For	data-enrichment, firmographics, lead-scoring	sales, prospecting, lead-generation
Features	6 listed	7 listed

Clearbit

B2B data enrichment platform with firmographic and technographic intelligence.

AI Sales freemium

Visit Clearbit → Alternatives

Apollo.io

AI sales intelligence platform with 270M+ contacts and automated outreach.

AI Sales freemium

Visit Apollo.io → Alternatives

Feature Comparison

Clearbit	Apollo.io
✓ Data enrichment	✓ Contact database
✓ Reveal website visitors	✓ AI lead scoring
✓ Form optimization	✓ Email sequences
✓ Lead scoring	✓ LinkedIn integration
✓ API access	✓ Conversation intelligence
✓ HubSpot integration	✓ CRM sync
—	✓ Intent data

Pricing Comparison

Clearbit

freemium

Free HubSpot enrichment available. Paid plans based on volume. Contact sales.

Apollo.io

freemium

Free with 600 email credits/yr. Basic $49/user/mo. Professional $79/user/mo.

Pros & Cons

Clearbit

Pros

+ Accurate data
+ Real-time enrichment
+ Great API
+ HubSpot integration

Cons

− Pricing not transparent
− Now HubSpot-focused
− US-centric data

Apollo.io

Pros

+ Massive contact database
+ AI prospecting
+ Affordable
+ All-in-one platform

Cons

− Data accuracy varies
− Can be overwhelming
− Email deliverability issues

The Verdict

Both Clearbit and Apollo.io are strong AI Sales tools. Clearbit stands out for Accurate data, making it ideal if that's your priority. Apollo.io excels at Massive contact database, which may be more important for your workflow.