Apollo vs Clearbit: B2B Data Platforms Compared

Apollo.io and Clearbit represent two different approaches to B2B data. Apollo built its platform around sales prospecting, with a searchable contact database and outreach tools on top. Clearbit built an enrichment layer that filled in records a team already had, and its homepage now says Clearbit has joined HubSpot. So Clearbit vs Apollo comes down to a data model question: search for people you do not have yet, or fill in the ones you do.

Teams still weighing Apollo's fit against another enrichment tool can see how it stacks up in a separate comparison of lead sourcing platforms.

This guide compares them on what each needs as input, what each returns, what each costs, and where Clearbit's capability is documented now.

Clearbit vs Apollo: Which Is the Better Tool?

Apollo is the better tool for finding new prospects, because it is a searchable database its site sizes at 240M contacts and 30M companies, with sequences and a dialer built in. Clearbit was built for enriching records a team already had, and it can no longer be bought on its own. Its homepage says it has joined HubSpot, whose help centre now documents a data enrichment feature for that job.

If you need a contact database with built-in outreach for sales prospecting, Apollo sells it on a free plan and on paid plans from $49 per seat per month billed annually.

If you need enrichment that completes CRM records, shortens forms and shows which companies visit your site, the first question is whether you run HubSpot. Its data enrichment help article lists the feature on Starter, Professional and Enterprise subscriptions. Outside HubSpot, Apollo's own enrichment lines are the nearest thing to buy.

Understanding the Core Difference

These platforms solve related but distinct problems.

Apollo.io functions as an all-in-one sales platform. Sales teams use Apollo to find prospects, export contact data, run email sequences, make calls, and track engagement. The database serves as the foundation, but outreach tools drive much of the platform's value.

Clearbit was a data enrichment layer. Marketing and operations teams used it to enrich existing records, shorten forms, identify anonymous website visitors and score and route leads. It did not provide prospecting lists or outreach tools, and its homepage now says it has joined HubSpot.

This distinction matters more now than it did. Apollo competes with platforms like ZoomInfo and Lusha. Clearbit sat nearer 6sense and Demandbase in the enrichment and intent category, and its capability now has to be looked for inside HubSpot or rebuilt.

Deciding whether these tools even belong in the same bucket gets easier after a cross-category breakdown of both platforms showing how outreach and enrichment roles actually complement each other.

Database and Data Coverage

Apollo.io Database

Apollo's site describes its database as 240M contacts and 30M companies, and its pricing page says credits give you access to emails, phone numbers and enriched data. Searches start from basic filters on the free plan and advanced filters and signals on paid plans, which add buying intent topics, job change enrichment and waterfall enrichment. The workflow it is built for is search first: find the people who match the criteria, then work them from a list.

Source: apollo.io

Clearbit Data

Clearbit did not provide a prospecting database; it enriched records a team already had. Its homepage describes the data as gathered from public data on the web, its proprietary data and LLMs that convert unstructured information into standardized data sets, for leads, contacts and accounts, with global coverage across every country.

HubSpot's data enrichment help article describes the enrichment it runs now in the same record-first shape. It fills in the record you already hold: contact enrichment uses first name, last name and work email address, and company enrichment uses the company domain, matched against HubSpot's commercial dataset, third-party providers and publicly available information.

Source: clearbit.com and HubSpot's data enrichment help article

Data Coverage Comparison

For finding new prospects: Apollo provides the database. Enrichment needs a name and a work email, or a company domain, before it can do anything.

For enriching existing records: Apollo's paid plans list CSV, CRM and API data enrichment and automated CRM enrichment. HubSpot enriches records automatically, continuously, one at a time or in bulk, and its help article says existing data is kept unless you choose to overwrite it.

For website visitor identification: Clearbit's homepage still describes turning anonymous traffic into buying intent signals with IP intelligence. HubSpot's Intelligence tab shows website visitor activity, and Apollo's paid cards identify 100 companies a month from website visitors.

Teams weighing Clearbit-style enrichment against a raw data provider rather than a prospecting tool can read the separate clearbit vs people data labs comparison.

Pricing Comparison

Apollo.io Pricing

Twelve monthly grants come to the same yearly total as the annual grant: 2,500 a month is 30,000 a year and 4,000 a month is 48,000. So the billing choice changes the price and when the credits arrive, not how many there are. Worked out from the list prices, one Basic seat costs $588 for a year billed annually against $780 billed monthly, which matches the 24% saving the page advertises. On Professional it is $948 against $1,188, closer to 20%.

Source: Apollo.io Pricing

Clearbit Pricing (standalone product retired)

Clearbit no longer publishes a standalone price list, and its pricing address redirects to the homepage, which states that Clearbit has joined HubSpot. HubSpot's old Breeze Intelligence pricing address now resolves to a knowledge base article about HubSpot Credits. The data enrichment help article is the one that settles the cost question: it states that data enrichment does not consume HubSpot Credits, while smart properties do, and lists the feature on Starter, Professional and Enterprise subscriptions.

Source: Clearbit and HubSpot's data enrichment help article

Pricing Analysis

Direct price comparison is difficult because the platforms serve different functions:

For sales prospecting: Apollo's $49 to $119 per seat per month billed annually includes database access plus outreach tools. Clearbit did not offer prospecting functionality at any price.

For enrichment only: Clearbit's enrichment is not sold on its own any more. Inside HubSpot it comes with the subscription, while Apollo meters enrichment from the same credits that reveal emails and phone numbers.

For HubSpot users: enrichment is already part of a Starter or higher subscription, so Apollo earns its place on the outbound side rather than as an enrichment purchase.

Feature Deep Dive

Apollo.io Key Features

Contact Database and Search

• Basic filters on the free plan, advanced filters and signals on paid plans
• Buying intent topics and job change enrichment
• A Chrome extension for prospecting in the browser

Email Sequences

• Unlimited sequences on paid plans, with A/Z testing from Professional
• A deliverability suite and email warmup on paid plans

Deliverability guardrails matter across the outbound stack, and teams weighing campaign execution against inbox warmup can compare cold email and warmup tools that address these complementary needs.

Dialer

• A US dialer on paid plans, with credits applying
• An Advanced Dialer add-on with power dialing, voicemail drop and call logging

CRM Integration

• CRM integrations with Salesforce, HubSpot and Pipedrive
• Automated CRM enrichment on paid plans

What Clearbit's Capability Looks Like Now

Clearbit's homepage lists what the product did: enrich every record, score and route leads in real time, reveal buying intent from anonymous traffic with IP intelligence, and shorten forms dynamically so a field that can be enriched is not asked. It also lists 6 digit NAICS, GICS and SIC codes, corporate hierarchies and a normalized role and seniority set.

Inside HubSpot, the help article documents form shortening that only displays the fields that cannot be enriched, enriched fields that improve lead scoring and trigger workflow enrollment, and personalization tokens populated from enriched data.

Use Case Comparison

When Apollo.io Excels

Outbound Sales Prospecting Sales teams building prospect lists and running cold outreach campaigns benefit from Apollo's combination of database access and sequence tools. The workflow of search, export, and email happens within a single platform.

Whoever starts the conversation decides most of what follows, which is the distinction the outbound sales definition draws before any tooling question arises.

SDR/BDR Team Operations Teams running high-volume outbound programs use Apollo's unlimited email sending (Professional tier) and integrated dialer to reach prospects across multiple channels.

Beyond database and dialer tools, deliverability itself matters, and teams weighing warmup versus outreach execution can compare that split in email warmup and cold outreach tools.

Sales Intelligence Intent data, job change alerts, and company tracking help sales teams prioritize accounts showing buying signals.

Budget-Conscious Teams Apollo's $49/month starting price (with a functional free tier) makes B2B data accessible to startups and small teams.

When Clearbit-Style Enrichment Is the Need

The jobs Clearbit was bought for have not gone away: shorter inbound forms, CRM records kept complete, target accounts spotted on the website, and personalization fed by firmographic data. For a team on HubSpot, the data enrichment help article lists the same uses: form shortening, lead scoring, segmentation on enriched fields such as job title, industry and company size, personalization tokens and workflow triggers. For a team elsewhere, those jobs need a deliberate replacement, and Apollo's enrichment lines are the place to start measuring the gap.

Integration Ecosystems

Apollo.io Integrations

• CRMs: Salesforce, HubSpot, Pipedrive
• Engagement: Outreach, SalesLoft
• Email delivery: SendGrid, Mailgun
• Also named in its FAQ: Marketo and LinkedIn
• Mailboxes: Gmail on non-paying plans, Microsoft and other providers after paying
• API: API enrichment on paid plans

Clearbit Integrations

Clearbit's homepage no longer lists integrations. The enrichment HubSpot documents writes to HubSpot records, so another tool sees it wherever that tool already syncs with HubSpot.

Integration Comparison

Apollo's integrations focus on the sales workflow, connecting CRMs and engagement platforms that sales teams use daily. On the enrichment side, the integration question has become which systems read HubSpot's enriched fields.

Data Quality and Accuracy

Apollo.io Data Quality

Apollo's pricing page says it enriches every record with Apollo data, trusted partners and AI research, and lists waterfall enrichment and an enrichment report and history on its plans. Like every B2B database, its records decay as professionals change roles and companies, which is what the job change enrichment line exists to catch.

Clearbit Data Quality

Clearbit's homepage says it starts with the most precise data sources and then incorporates all other available sources, to balance accuracy and coverage. For the enrichment HubSpot runs now, its help article says enriched data is dynamically weighed and scored against its data sources, checked for accuracy and freshness, and reviewed by a human quality assurance team.

Quality Recommendations

Regardless of platform choice:

• Verify email addresses before high-volume sending
• Build workflows to handle enrichment failures gracefully
• Monitor bounce rates and data accuracy over time
• Supplement any single source with verification tools

Choosing Between Apollo and Clearbit

Choose Apollo.io When

• You need a prospecting database to find new contacts
• Sales reps require built-in outreach tools
• Budget constraints make enterprise platforms inaccessible
• You want an all-in-one platform to reduce tool count
• Outbound sales drives your growth model

Choose HubSpot's Data Enrichment When

• Inbound marketing generates most of your pipeline
• Your tech stack already centers on HubSpot
• Website visitor activity on the Intelligence tab supports your ABM work
• Marketing owns the data enrichment budget

Consider Both When

Some organizations run both, split by function:

• Apollo for sales prospecting and outbound
• HubSpot's enrichment for inbound records and form shortening

This combination addresses both prospecting and enrichment needs, though it increases total tool spend.

Feature Comparison Summary

Apollo's paid cards list real-time form enrichment with a 10 limit, beside the unlimited sequences and US dialer covered above. The table puts the two side by side as they can be bought today.

Capability	Apollo	Clearbit today
Contact database	240M contacts and 30M companies	None; it enriched records you had
Email sequences	Unlimited on paid plans	None
Dialer	US dialer, credits apply	None
Record enrichment	CSV, CRM and API data enrichment	HubSpot data enrichment
Website visitors	100 companies a month on paid plans	HubSpot's Intelligence tab
Form shortening	Real-time form enrichment, 10 limit	HubSpot form shortening
Starting price	Free, then $49 per seat billed annually	No standalone price

Getting Started Recommendations

On HubSpot, the help article sets the order. Super Admin permissions are required to configure enrichment settings, automatic enrichment is off by default and has to be set up for contact and company records separately, and HubSpot recommends testing record eligibility before enriching. The last decision is whether enrichment may overwrite values it judges incorrect.

On Apollo, the order is the one any database rollout needs: connect the Chrome extension and the CRM, turn the ideal customer profile into search filters, verify data quality on a small sample before large exports, then configure deliverability settings and run a small test campaign.

On HubSpot

1A Super Admin configures the enrichment settings

2Contacts and companies are set up separately; automatic enrichment starts off

3Test record eligibility before enriching

4Decide whether enrichment may overwrite values it judges incorrect

On Apollo

1Connect the Chrome extension and the CRM

2Turn the ideal customer profile into search filters

3Verify data quality on a small sample before large exports

4Configure deliverability, then run a small test campaign

Final Thoughts

Apollo.io and Clearbit were built for different primary functions despite both operating in the B2B data space.

Choose Apollo.io for: Sales prospecting, contact database access, built-in outreach tools, and a free plan below paid tiers from $49 per seat per month billed annually.

Look to HubSpot's data enrichment for: Filling in records, shortening forms and seeing visitor activity, now that Clearbit's homepage says it has joined HubSpot.

A team can run both, with sales prospecting in Apollo while marketing enriches inbound leads in HubSpot. Settle the primary use case first, and treat any standalone Clearbit price you find as a historical figure.

Related Reading

• ZoomInfo vs Clearbit: Enterprise Sales Intelligence vs Marketing Data Enrichment
• Lusha vs Clearbit: Sales Prospecting Tool vs Marketing Enrichment Platform

If you would rather have this run for you, RevenueFlow books qualified meetings on a pay-per-meeting basis and publishes client results.

Pricing and features are taken from the vendors' own pages. Verify current terms with the vendor before relying on them.