Clearbit vs Apollo

If you're comparing Clearbit vs. Apollo, you're comparing two different philosophies of how B2B data should work. One has been absorbed into a CRM. The other has expanded into an all-in-one sales platform. Neither tells the full story of what's available.

The questions that matter:

• Do you need a standalone data platform, or are you locked into HubSpot and want enrichment built into your CRM?

• Is your priority enriching records you already have, or finding new prospects you haven't identified yet?

• Do you need outbound sales tools (sequences, dialer, email) alongside your data, or just the data itself?

• How important is it that your B2B data platform works with your existing tech stack, regardless of which CRM you use?

• Are you a small team running your own outreach, or an enterprise that needs data infrastructure feeding multiple teams and AI agents?

In short, here's what we recommend:

Clearbit (now Breeze Intelligence) is HubSpot's native data enrichment layer. Acquired by HubSpot in December 2023, Clearbit enriches contact and company records with over 40 firmographic, demographic, and technographic attributes, identifies anonymous website visitors, and shortens web forms using real-time data lookups.

For HubSpot users, the integration is simple: basic enrichment is included in all Starter+ seats at no extra credit cost. But the acquisition came with a tradeoff. Clearbit no longer works outside HubSpot. There's no standalone API for other CRMs, no prospecting database for outbound list building, and no outreach tools. If you don't use HubSpot, Clearbit isn't an option.

Apollo calls itself an AI sales platform that bundles a 275M+ contact database, multichannel outreach sequences, a built-in dialer, email deliverability tools, deal management, and conversation intelligence into a single product.

Its free-forever Starter plan and self-serve pricing (paid plans from $49/seat/month) make it accessible to individual contributors and small teams. Apollo covers more ground than Clearbit: it's a data source and an engagement platform. But its CRM capabilities are less mature than dedicated CRMs, its credit system creates complexity, and its data coverage in non-English markets requires testing before committing.

Both platforms serve their core audiences well. But Clearbit's HubSpot lock-in limits who can use it, and Apollo's all-in-one approach trades depth for breadth. For teams that need the largest verified B2B dataset, intelligence that explains why deals move (not just what happened), and the flexibility to use that data in any tool, there's a third option worth evaluating.

ZoomInfo is an all-in-one AI GTM Platform built on a large data foundation: 500M contacts, 100M companies, 135M+ verified phone numbers, and 200M+ verified business emails. Its GTM Context Graph, which processes 1.5B+ data points daily, unifies this data with your CRM records, conversation transcripts, and behavioral signals to reveal the full context of your accounts.

That context fuels AI that shows not just what happened, but why it happened, and what to do next. Your team can run sales from the GTM Workspace, build GTM plays in GTM Studio, or power their own tools through the API and MCP in any other front-end. No CRM lock-in, no tool lock-in.

If the largest B2B dataset, AI-powered deal intelligence, and the freedom to use it anywhere sounds like what your team needs, see how ZoomInfo works.

Clearbit vs. Apollo vs. ZoomInfo at a glance

Clearbit is now a HubSpot feature, not a standalone product

This is the most important thing to understand about Clearbit in 2026.

HubSpot acquired it in December 2023 and rebranded it as Breeze Intelligence at INBOUND 2024. All of Clearbit's former free tools (the Connect Chrome extension, Weekly Visitor Report, TAM Calculator) were sunset on April 30, 2025. The standalone APIs that once served any CRM are gone.

What remains is a data enrichment layer inside HubSpot. Within that context, it works well. Basic enrichment costs no credits for paid HubSpot subscribers. Continuous enrichment refreshes records monthly. Form shortening, which removes fields that Clearbit can fill from an email address alone, no longer consumes credits and has driven 50%+ conversion lifts for customers like Gong and Mention.

But the scope is narrow. Clearbit enriches records you already have. It does not provide a searchable prospecting database. It does not offer outbound tools. It does not work with Salesforce, Dynamics, or any other CRM. If you're evaluating Clearbit, the first question isn't whether the data is good. It's whether you're on HubSpot.

ZoomInfo approaches the problem differently as an all-in-one AI GTM Platform. Instead of embedding enrichment inside a single CRM, it provides company and contact data, intent signals, and enrichment that work across multiple CRMs and GTM tools, giving teams access to the same data foundation regardless of which system they use. For a detailed breakdown of what Clearbit costs inside HubSpot vs. what you get with a ZoomInfo plan, see our Clearbit pricing analysis.

Apollo bundles data and outreach, but depth varies

Apollo takes the opposite approach: do everything in one place.

Founded in 2015 and valued at $1.6B after a $100M Series D in 2023, Apollo has grown from an affordable outbound tool into what it calls an "AI sales platform" covering data, outreach, dialing, deal management, and conversation intelligence.

The breadth is genuine. An SDR can build a prospect list, launch a multichannel sequence, make calls with the Parallel Dialer, and track deals from a single login. Apollo claims customers save 53.4% on average by consolidating tools, and its free-forever Starter plan lets individuals start without procurement approval.

Source: Apollo

The tradeoff is depth. Apollo's 275M+ contacts represent solid coverage, but the platform itself acknowledges uneven international data by advising prospects to "sign up for a free account and run a quick search by region" rather than publishing coverage metrics by geography.

Its deal management is less mature than Salesforce or HubSpot for complex enterprise workflows. And the credit system introduces friction: credits don't roll over, the "Unlimited" plan has caps under a Fair Use Policy, and API access requires a Custom plan.

For a full breakdown of how Apollo's credit model works across tiers, see our Apollo pricing analysis.

Data coverage is not a tie

Scale and verification methodology diverge significantly across the three platforms.

Clearbit (Breeze Intelligence) enriches records with 40+ firmographic, demographic, and technographic attributes. The dataset is narrower than ZoomInfo's and is now primarily valuable for companies already in your CRM, not for building new prospect lists. Its historical strength was precision for marketing use cases inside HubSpot.

Apollo maintains a database of 275M+ contacts with 97% email accuracy via 7-step verification and 72M emails verified monthly. Apollo claims 5.3M new contacts added and 150M contacts refreshed per month. Its international data coverage is uneven by Apollo's own admission, and mobile data accuracy has historically been a weaker area compared to ZoomInfo's 135M+ verified phone numbers and 120M direct dials.

ZoomInfo verifies data through a multi-source pipeline: automated ML scanning of 28 million site domains daily, third-party partner data across 95 million businesses, 200,000+ ZoomInfo Lite community contributors, and 300+ human researchers maintaining data quality. ZoomInfo claims up to 95% accuracy on first-party data.

That verification rigor translates to outcomes. Seismic attributed 39% of active pipeline to opportunities identified by ZoomInfo signals, reported 54% productivity gains, and saved 11.5 hours per week per seller. Snowflake used ZoomInfo across 70+ company attributes and technographic data fields in their propensity scoring model, achieving 90% higher opportunity open rates and 2x higher customer conversion on top-scoring accounts.

Neither Clearbit nor Apollo can point to independent validation at this scale. Apollo's B2B Data page features a customer testimonial that names ZoomInfo directly: "We benchmarked ZoomInfo versus Apollo, Clearbit, Lusha, and Seamless, and ultimately Apollo won on all fronts, especially in enrichment." That kind of quote resonates with SMB buyers. It's less common in enterprise procurement, where Fortune 500 RFP results have independently validated ZoomInfo's data superiority.

Intent data: three different approaches

Clearbit (Breeze Intelligence) includes Buyer Intent inside HubSpot, using IP intelligence to identify which companies visit your website, filtered by page paths you designate as buying signals (pricing pages, product pages, case studies).

It's a useful signal for HubSpot users but scoped to your own website. It doesn't track research activity elsewhere on the web.

Apollo includes intent data on all paid plans, covering 1,600+ topics via third-party signals. Users select intent topics and receive ranked company lists showing which accounts are actively researching those subjects.

The intent layer is sourced from third-party cooperative data rather than a proprietary first-party network. Apollo also includes AI Research prompts that surface decision-makers before form fills and Pitch Intelligence for per-account research summaries.

ZoomInfo runs its own intent infrastructure. ZoomInfo Intent tracks signals from 210 million IP-to-Organization pairings and processes new keyword-to-device pairings monthly from a first-party network, not a third-party cooperative.

The key differentiator is Guided Intent, which identifies topics historically correlated with deal success in your specific business. This surfaces the signals that predict revenue rather than generic research activity across a shared topic taxonomy.

Forrester named ZoomInfo a Leader in Intent Data Providers for B2B (Q1 2025), awarding the highest possible scores across eight criteria. Neither Apollo nor Clearbit has received equivalent analyst recognition in this category.

Intelligence vs. data: where ZoomInfo separates

Both Clearbit and Apollo deliver data. ZoomInfo delivers context.

The GTM Context Graph is ZoomInfo's intelligence layer.

It fuses ZoomInfo's third-party B2B data with a customer's CRM records, conversation transcripts (captured by Chorus), email interactions, and behavioral signals. The result is a system that captures not just what happened in a deal, but why.

ZoomInfo CPO Dominik Facher gives this example: a CRM records that a deal moved from Stage 3 to Stage 4. Conversation intelligence transcribes what the VP of Finance said. Intent data logs a research spike. None of these systems alone can explain the connection.

The GTM Context Graph reasons across all three to identify why the deal accelerated (executive sponsorship entering at a specific stage, combined with ROI-focused questions, matching the pattern behind closed-won deals in your segment) and what that predicts about next steps.

This intelligence produces measurable outcomes.

Seismic's sales team attributed 39% of active pipeline to opportunities identified by ZoomInfo signals, reported 54% productivity gains, and saved 11.5 hours per week per seller.

Snowflake uses ZoomInfo for over 70 company attributes and technographic data fields in their propensity scoring model, achieving 90% higher opportunity open rates and 2x higher customer conversion rates on top-scoring accounts.

Neither Clearbit nor Apollo offers a comparable intelligence layer. Clearbit enriches records. Apollo adds AI-generated email copy and call summaries. ZoomInfo connects patterns across thousands of deals to predict what works next.

Outbound and engagement capabilities

Clearbit offers no outbound tools.

It enriches records and identifies website visitors, but sending emails, making calls, and running sequences require separate platforms.

Apollo covers the full outbound workflow.

Sequences support email, phone, LinkedIn, and custom task steps. The Parallel Dialer lets reps connect with 100+ prospects per hour. Built-in email deliverability includes domain purchase, SPF/DKIM/DMARC authentication, and mailbox warm-up.

Source: Apollo

The Workflow Engine provides visual drag-and-drop automation, with users claiming to book 2.5x more meetings after adoption. For teams that want data and outreach in one tool without managing integrations, this is Apollo's core value.

ZoomInfo provides engagement through multiple channels.

GTM Workspace gives sellers a single screen where AI agents handle account research, outreach drafting, CRM updates, and signal monitoring. The partnership with Salesloft connects ZoomInfo's buyer signals into Salesloft's sequencing and pipeline management.

GTM Studio lets marketers and RevOps design multi-channel plays (email, calls, ads, direct mail) triggered by buyer behavior, using natural language rather than engineering tickets.

ZoomInfo Marketing includes a native Demand-Side Platform for display advertising based on 300+ company attributes, and FormComplete for form shortening (Smartsheet reported a 40%+ increase in form fills and 84% increase in MQLs).

The difference in approach: Apollo gives one person a complete toolkit. ZoomInfo gives entire organizations (sales, marketing, RevOps) coordinated execution powered by the same intelligence layer.

Platform access and flexibility

This is where the three platforms diverge most sharply.

Clearbit is locked to HubSpot.

Breeze Intelligence lives exclusively inside the HubSpot platform. No Salesforce integration, no Dynamics, no API for custom applications. If your company uses a different CRM, or if you switch CRMs later, your Clearbit investment doesn't transfer.

Apollo works with Salesforce, HubSpot, and Pipedrive natively, plus connections through Zapier and its integration marketplace.

However, API access requires a Custom plan, creating a barrier for technical teams that want programmatic access without an enterprise commitment. The Chrome Extension is available on all plans, enabling prospecting on LinkedIn and company websites.

Source: Apollo

ZoomInfo provides the broadest access.

APIs are included in all relevant plans, not gated behind enterprise tiers. The MCP server connects AI models (including Anthropic Claude and ChatGPT) to ZoomInfo's data through natural language, with no custom coding required.

Source: ZoomInfo

The Enterprise API serves teams building custom agents, internal tools, or partner integrations. Native integrations cover Salesforce, HubSpot, Microsoft Dynamics, and 120+ partners in the App Marketplace. Cloud Partners enable direct data ingestion into AWS, Google Cloud, Snowflake, and Databricks.

CEO Henry Schuck described the strategy: "There's definitely incremental budget for AI initiatives inside of companies. Historically, we wouldn't be involved in that budget. Today, we see our pathway into those conversations with our MCP and API technologies."

For teams building their own AI agents or integrating data into proprietary systems, ZoomInfo is infrastructure. Clearbit and Apollo are applications.

Pricing comparison

The three platforms use different models, making direct comparison tricky.

Clearbit doesn't have standalone pricing.

It's embedded in HubSpot's subscription. Basic enrichment is included in all Starter+ Core Seats at no extra credit cost. Advanced features (Buyer Intent, Smart Properties) consume HubSpot Credits, with Professional plans including 3,000 credits/month and Enterprise plans 5,000 credits/month. Additional credits cost $10 per 1,000. Credits don't roll over.

For existing HubSpot customers, the marginal cost of Clearbit enrichment is low. For non-HubSpot companies, the cost is the entire HubSpot subscription plus any credit packs.

Apollo publishes transparent pricing.

The free Starter plan provides 900 credits/year and basic features. Basic is $49/seat/month (annual), Professional is $79/seat/month (annual), and Organization plan is $119/seat/month (annual), with a minimum of 3 seats.

Additional costs include the Advanced Dialer at $149/month (or $119/month annual), per-minute dialer charges, AI research credits, and waterfall enrichment credits. Credits don't roll over and are non-refundable. Seats cannot be decreased during a contract term.

ZoomInfo is free to start with consumption credits based on usage, with no published dollar amounts for paid tiers.

ZoomInfo Lite is a permanent free tier with 10 monthly export credits, access to the B2B database, CRM enrichment, the Chrome extension, and WebSights Lite.

A 7-day free trial provides broader access. ZoomInfo is premium-priced, but enterprise buyers evaluate it against documented outcomes: Seismic's 11.5 hours saved per seller per week, Snowflake's 90% higher opportunity open rates, and Thomson Reuters' 40% increase in closed-won deals.

The pricing reflects positioning. Clearbit optimizes for HubSpot customers who already pay for the CRM. Apollo targets budget-conscious teams who want a lot in one tool. ZoomInfo targets organizations where the ROI of better data and intelligence justifies the investment.

Conversation intelligence and coaching

Clearbit doesn't capture or analyze sales conversations. It's a data enrichment tool.

Source: Hubspot Experts

Apollo includes built-in conversation intelligence with call recording, transcription, AI summaries, an AI chatbot on transcripts, call playlists, and customizable scorecards.

Source: Apollo

For teams that want basic call analysis without buying Gong separately, this is a useful inclusion.

ZoomInfo operates Chorus, a dedicated conversation intelligence platform backed by 14 technology patents.

Beyond recording and transcription, Chorus extracts the context behind conversations: why a deal accelerated, why a champion went quiet, what a competitive mention predicts about deal risk.

This context feeds into the GTM Context Graph. Managers reviewing a call see ZoomInfo's full profile for every participant (contact details, company insights, relationship history) through Connected Intelligence, without cross-referencing a separate system.

Apollo provides conversation capture. ZoomInfo provides conversation understanding.

Security and compliance

All three platforms maintain strong security foundations, but the depth varies.

Clearbit holds SOC 2 Type 2 certification, with TLS v1.2/v1.3 encryption in transit and AES-256 at rest, hosted on AWS and Google Cloud Platform.

It is registered as a data broker in California and maintains a Privacy Request Form for data access and erasure.

Apollo holds ISO 27001 and SOC 2 Type 2 certifications, is GDPR compliant as both Data Processor and Controller, and maintains CCPA, CPRA, EU-US DPF, and CASA Tier 2 certifications.

Infrastructure is hosted on Amazon Web Services.

ZoomInfo maintains the broadest certification stack for regulated enterprise buyers: ISO 27001, ISO 27701 (privacy management), SOC 2 Type II, TRUSTe GDPR and CCPA validations, all renewed annually.

ZoomInfo is a registered data broker in California and Vermont. The ISO 27701 certification (privacy information management) matters for companies selling into the EU or handling sensitive data, and neither Clearbit nor Apollo holds it.

Clearbit vs. Apollo vs. ZoomInfo: Which should you choose?

The choice comes down to your stack, your scale, and your GTM complexity.

Choose Clearbit if:

• You're already a paying HubSpot customer and need CRM enrichment with zero setup

• Your primary need is filling gaps in inbound records, not building outbound lists

• Form shortening is a priority for your demand generation team

• You don't need outbound tools, a prospecting database, or conversation intelligence

• You're comfortable with enrichment data that stays inside HubSpot

Explore Breeze Intelligence inside HubSpot.

Choose Apollo if:

• You're a small or mid-market team that wants data, outreach, and basic CRM in one platform

• Budget matters, and you want to start free and scale incrementally

• Your team runs high-volume outbound and needs sequences, a dialer, and email deliverability together

• You don't need enterprise-grade data coverage or AI-powered deal intelligence

• You're comfortable with a credit system that requires monitoring

Start with Apollo's free plan.

Choose ZoomInfo if:

• You need the largest verified B2B dataset available

• You want intelligence that connects data, signals, and conversations to explain deal momentum

• Your team spans sales, marketing, and RevOps, and you need coordinated execution across all three

• You want the flexibility to use your data in any tool via APIs and MCP, not locked into one CRM

• You're evaluating vendors for enterprise-scale GTM, where data quality directly impacts pipeline

See ZoomInfo in action with a free trial.

Clearbit made its name as a developer-friendly enrichment API. That product no longer exists independently. Apollo built a compelling all-in-one platform for teams that value breadth and accessibility. ZoomInfo invested two decades into the data infrastructure, intelligence layer, and open access that enterprise GTM teams depend on. The right choice depends on where you are today and where your go-to-market strategy needs to go.

Frequently asked questions

Is ZoomInfo an alternative to Clearbit?

Yes. ZoomInfo is a direct alternative to Clearbit for B2B data enrichment, and it goes significantly further. Clearbit is now HubSpot Breeze Intelligence and works exclusively inside HubSpot. ZoomInfo works with any CRM (Salesforce, HubSpot, Dynamics, and 120+ others), offers a larger dataset (500M contacts vs. Clearbit's narrower coverage), and adds intent data, conversation intelligence via Chorus, and the GTM Context Graph intelligence layer. For teams not on HubSpot, ZoomInfo is the primary enrichment alternative.

Is ZoomInfo better than Apollo?

It depends on your use case and scale. Apollo is an all-in-one sales platform (data + outreach + dialer) with accessible public pricing and a free tier, a strong fit for SMB and mid-market teams that want everything in one place. ZoomInfo offers a larger verified dataset (500M vs. 275M+ contacts), deeper data accuracy (300+ human researchers, 95%+ first-party verified), proprietary intent data (Forrester Wave Leader Q1 2025), and the GTM Context Graph intelligence layer that Apollo does not have. Enterprise teams that need the largest B2B dataset and intelligence across sales, marketing, and RevOps typically choose ZoomInfo.

Can you use Clearbit without HubSpot?

No. As of 2024, Clearbit is no longer available as a standalone product. HubSpot acquired Clearbit in December 2023 and rebranded it as HubSpot Breeze Intelligence. The standalone Clearbit API and free tools were sunset (free tools on April 30, 2025; Logo API on December 1, 2025). Clearbit's data enrichment capabilities are now exclusively available inside the HubSpot platform. If you don't use HubSpot, you need a different data platform. ZoomInfo and Apollo are the two most common alternatives.

What is the difference between Apollo and Clearbit?

Apollo is a full sales platform with a database of 275M+ contacts, outbound sequencing, a parallel dialer, and conversation intelligence, designed for reps running complete outbound motions. Clearbit (now Breeze Intelligence) is a data enrichment layer inside HubSpot. It enriches records you already have, identifies website visitors, and shortens forms, but offers no prospecting database, no outbound tools, and no CRM compatibility outside HubSpot. If you need to find new prospects, Apollo. If you need to enrich existing HubSpot records, Clearbit.

What is the best alternative to both Clearbit and Apollo?

ZoomInfo is the platform most commonly identified as a comprehensive alternative to both. It provides a larger verified B2B dataset than Apollo (500M contacts vs. 275M+), works with any CRM (unlike Clearbit's HubSpot lock-in), and adds the GTM Context Graph intelligence layer, Chorus conversation intelligence, and proprietary intent data that neither competitor offers. For enrichment-only needs at a lower cost, some teams also evaluate Clay, Cognism, or Lusha. See our Apollo alternatives page for full comparisons.

Does Apollo have conversation intelligence?

Apollo includes built-in call recording and transcription with AI summaries, an AI chatbot on transcripts, call playlists, and customizable scorecards, included on Professional and Organization plans. It covers the core conversation capture workflow for teams that don't want a separate tool. ZoomInfo's Chorus is a dedicated conversation intelligence platform backed by 14 technology patents, with deeper capabilities including Connected Intelligence (which surfaces participant CRM data alongside call recordings) and feeds call insights directly into the GTM Context Graph. For most enterprise teams with coaching and deal-intelligence needs, Chorus offers more depth.

More Clearbit and Apollo comparisons and guides

If you're interested in reading more, you might like:

• Top 10 Clearbit Alternatives and Competitors for 2026

• Top 11 Apollo Alternatives for B2B Sales Intelligence in 2026

• 6sense vs. Apollo (vs. ZoomInfo): Which B2B Sales and Marketing Platform Fits Your GTM Strategy in 2026?