Clearbit vs ZoomInfo vs Apollo: Which Data Model Fits You

Clearbit, ZoomInfo and Apollo differ less in data than in business model. Clearbit’s enrichment now lives inside paid HubSpot plans, ZoomInfo sells credits and annual contracts built around contacts and intent, and Apollo sells per-seat plans. Choose by the model that matches how your team works.

Three different shapes

Comparing the three as if they were interchangeable leads to bad purchases. The framing that helps is the one in BusinessMCP’s company data APIs comparison: there are several distinct jobs, namely firmographics for a domain, contacts at a company, funding history, emails and the company behind an IP, and no one vendor is best at all of them. The page states its prices were checked between September 28 and October 7, 2026, and, because it is published by a competitor, readers should verify each figure with the vendor.

	Clearbit / Breeze	ZoomInfo (GTM.AI)	Apollo.io
Focus	Enrichment inside HubSpot	Contacts, direct dials, intent	Contacts and enrichment
Pricing (as reported)	Paid HubSpot seat; Sales Hub Starter $20 per seat per month	About $0.38 per data credit at the $1,000 tier	$49 to $119 per seat per month, annual
Free element	None standalone	1,000 data and 1,000 AI credits	Not stated on the page
Commitment	HubSpot subscription	Prepaid credits or annual contract	Per-seat plan
API	Not documented for Breeze	Not detailed on the page	Rate limits vary by plan
MCP server	HubSpot CRM MCP, reads records	Offered	Paid plans

Clearbit now means HubSpot

Since the acquisition, enrichment is a feature of paid HubSpot subscriptions, as our availability timeline sets out. If you run HubSpot, it is the natural default and arguably the cheapest. If you do not, it requires buying seats you may not need. The page reports no new self-serve Clearbit API signups.

ZoomInfo: depth and contract

According to the comparison page, ZoomInfo’s credit model offers 1,000 free data credits and prices around $0.38 per credit at the $1,000 tier, with credits expiring after 12 months, while core SalesOS remains an annual contract. The value is in contact depth and intent signals, which a firmographic API does not offer. The cost is commitment and per-record price. BusinessMCP also publishes a ZoomInfo alternative page if you want that vendor’s perspective.

Apollo: seats and sequences

Apollo bundles contact data with outreach tooling, priced per seat. The page cites a 2026 teardown saying an email costs one credit and a phone eight. That is fine for sales teams who live in the tool, less so for an engineer who wants an API call from a backend.

Key takeaway: these platforms sell people and workflow. If all you need is company attributes for a domain, you are paying for capabilities you will not use.

When a narrow API is enough

For a developer or RevOps analyst who needs size, industry and location by domain, a pay-per-call API can be simpler. BusinessMCP’s Clearbit API alternative comparison lists its company lookup at $0.02 per company found, a one-time $5 trial credit and no commitment. The page is candid about where that falls short: no funding, revenue, technographic or intent data, people tools restricted from several regions, and a young product from a small company without an account team. In its own words, Hunter’s paid enrichment and Coresignal’s larger plans can be cheaper per record at volume.

Decision guide

1. You use HubSpot and want enrichment in records: start with Breeze.
2. Your reps need verified contacts and sequences: evaluate Apollo and ZoomInfo on trials, using your own target accounts.
3. You need intent signals: that points to ZoomInfo-class vendors and an annual budget.
4. You need company attributes through an API, at variable volume: test a pay-per-call API first; see alternatives for data enrichment.
5. You are cost-constrained: look at free options and the pricing breakdown.

How to run a fair bake-off

Give every vendor the same list of 300 accounts. Record found rate, field accuracy after hand-checking, cost per usable record and time to integrate. Include a few small and obscure companies, since every vendor looks good on well-known brands. Ask each vendor what they exclude: regions for people data, minimum terms, rate limits and the cost of a miss.

What we do not claim

We have not tested ZoomInfo or Apollo ourselves. The figures above are as reported on one comparison page, and a single source is not enough to base a purchase on. Ask each vendor for current pricing in writing, and record the date. Prices in this market move several times a year, which is another reason to build your integration behind a thin wrapper and revisit the decision annually.

Hidden differences that the price table misses

Beyond price, three practical differences affect day-to-day use.

Who operates it. A platform like Apollo is designed for a rep to log in, search and sequence. An API-first product is designed for code to call. If your use case is a backend job that enriches new sign-ups overnight, a tool built around a rep’s screen adds friction even when the data is good.

How credits behave. Credit systems differ on what a credit buys, whether unused credits expire and whether failed lookups consume them. The comparison page notes that ZoomInfo’s credits expire after 12 months and that Apollo charges one credit for an email and eight for a phone number, per a 2026 teardown. Two vendors with the same headline price can differ by a factor of several on cost per useful record.

What happens at the edges. Ask each vendor about excluded regions and consent rules for contact data. BusinessMCP’s page, for instance, states that its people tools never return people in the EU, EEA, UK or Switzerland, or in four named US states. Other vendors have their own rules, and a contact database that is strong in one region can be thin in another. If your market is European, test coverage there before you sign.

None of this makes one vendor right for everyone. It means the cheapest-looking row in a table is rarely the cheapest in use, and that the only reliable number is one you measure on your own accounts.