Clearbit vs. People Data Labs (vs. ZoomInfo): Which B2B Data Platform Fits Your Needs in 2026?

Comparing Clearbit and People Data Labs is like comparing a kitchen appliance to a wholesale food supplier. Both deal in B2B data, but they serve different buyers, solve different problems, and deliver value in different ways.

Before you choose, answer these questions:

• Do you need enrichment embedded in your CRM, or raw data piped into custom applications?

• Are you a HubSpot shop, or do you need CRM-agnostic access?

• Is your team made up of sales reps and marketers, or developers and data engineers?

• Do you need a prospecting database to find new contacts, or just enrichment for contacts you already have?

• Would you benefit from intent signals, conversation intelligence, and AI-powered execution alongside your data?

In short, here's what we recommend:

Clearbit (now Breeze Intelligence within HubSpot) enriches contact and company records with over 40 firmographic, demographic, and technographic attributes, identifies anonymous website visitors, and shortens web forms to lift conversion rates. For HubSpot users, it works without integration effort because enrichment is built into the CRM.

However, Clearbit is now available only inside HubSpot. If you use Salesforce, Dynamics, or any other CRM, Clearbit is off the table. It also lacks a prospecting database and publishes no accuracy benchmarks, making it hard to compare against alternatives.

People Data Labs is a B2B data infrastructure provider built for developers and data engineers who need to embed personal and company data into their own products. With 1.5 billion unique person profiles and 74 million+ company profiles, PDL delivers data through REST APIs, bulk data feeds via AWS, Snowflake, and Databricks, and SDKs in five languages.

Its per-match pricing means you pay only when a record is returned. The trade-off: PDL has no user interface, no intent signals, and no execution tools. It's raw data for builders, not a platform for sellers or marketers.

Both platforms handle B2B data, but neither gives you the complete picture. Clearbit enriches what you already have inside HubSpot. PDL supplies raw data for custom applications. Neither provides prospecting, intent signals, conversation intelligence, and AI-driven execution in one place. That's where ZoomInfo enters.

ZoomInfo is an AI-powered go-to-market platform built on a large B2B dataset: 500M contacts, 100M companies, 135M+ verified phone numbers, and 200M+ verified business emails. That data fuels ZoomInfo's GTM Context Graph, an intelligence layer that unifies your CRM records, conversation transcripts, and behavioral signals with the 1.5B+ data points ZoomInfo processes daily.

It captures why deals move or stall, so the AI drafting your next email follow-up understands the concern behind the conversation, your next play targets accounts matching your actual win patterns, and your next forecast reflects buying evidence rather than rep optimism. Your team can use this intelligence through the GTM Workspace for sellers, GTM Studio for marketers and RevOps, or APIs and MCP in any front-end.

If you want to see how data, intelligence, and execution work together in one platform, explore ZoomInfo.

Clearbit vs. People Data Labs vs. ZoomInfo at a glance

These platforms solve different problems for different buyers

The comparison between Clearbit and People Data Labs is unusual because the two platforms barely compete. They serve different personas, deliver data through different mechanisms, and make money in different ways.

Clearbit was founded in 2014 as a developer-first, API-based enrichment service.

HubSpot acquired it in December 2023 and rebranded it as Breeze Intelligence at INBOUND 2024. The product is now HubSpot's native data enrichment layer. Its buyer is a marketer or RevOps professional already on HubSpot who wants enriched records, intent signals, and shorter forms without leaving the CRM.

People Data Labs was founded in 2015 as a data infrastructure company.

Its buyers are developers and data engineers at companies like Clay, SeekOut, S&P Global, and Insight Partners who embed PDL data into their own products. PDL doesn't have a sales prospecting interface, a marketing automation platform, or even a point-and-click UI. It's a data supplier, not a SaaS application.

ZoomInfo spans both worlds and extends beyond them.

Founded in 2007 as DiscoverOrg, ZoomInfo has spent nearly two decades building a large B2B data platform, then layering intelligence, execution, and AI on top. Where Clearbit enriches HubSpot records and PDL supplies raw data to engineers, ZoomInfo provides the data, the intelligence to interpret it, and the tools to act on it, in any CRM, any workflow, or any custom application.

Data coverage and quality determine everything downstream

Data is the foundation. If contacts bounce, phone numbers don't connect, or company records are stale, nothing else matters.

Clearbit draws from 250+ data sources and uses LLMs to convert unstructured web content into standardized B2B profiles.

A human quality assurance team reviews the data for consistency. The dataset includes over 40 firmographic, demographic, and technographic attributes per record, with strong depth in industry classification: 6-digit NAICS, 8-digit GICS, and 4-digit SIC codes returned simultaneously.

However, HubSpot publishes no match rate, accuracy percentage, or coverage breakdown by geography or industry. You can't benchmark Clearbit's data quality against competitors without running your own tests.

People Data Labs operates at a larger scale: 1.5 billion unique person profiles and 74 million+ company profiles.

The person schema runs deep, with fields covering full employment history, education, skills, certifications, social profiles, and ONET occupation codes. Company data includes headcount derived from actual resume data (not self-reported LinkedIn ranges), monthly time-series headcount by role and level, and pre-computed growth and churn rates at 3, 6, 12, and 24-month windows.

For investment research and workforce analytics, this depth matters. But PDL doesn't validate email deliverability. You need a third-party service like Bouncer to verify that the contacts PDL returns will reach an inbox.

ZoomInfo combines scale with verification.

The dataset spans 500M contacts, 100M companies, 135M+ verified phone numbers, 120M direct-dial phone numbers, and 200M+ verified business email addresses.

The verification pipeline uses automated ML scanning 28 million site domains daily, a community of 200,000+ ZoomInfo Lite users who share data back, and a Data Training Lab of 300+ human researchers. First-party data reaches up to 95% accuracy.

In a Fortune 500 competitive RFP analyzing 25 million contacts across vendors, an independent consultant concluded that "no other competitor came even close."

The practical difference: when a sales rep exports a contact from ZoomInfo, the direct dial rings and the email lands. Clearbit enriches records but doesn't specialize in direct dials. PDL returns contact data but doesn't guarantee deliverability.

The HubSpot lock-in question changes the calculus

Clearbit's acquisition by HubSpot created a binary divide. If you're on HubSpot, Clearbit is convenient. If you're not, it doesn't exist for you.

For HubSpot users, the integration is genuine. Basic company and contact enrichment is included in all Starter+ Core Seats at no extra cost. Enrichment works through multiple modes: automatic (new records enriched instantly), continuous (existing records refreshed monthly at no credit cost), manual, bulk, and workflow-triggered.

There's no API key to configure, no field mapping to set up, no separate login to maintain. Form shortening (which removes fields Clearbit can already enrich from an email address alone) no longer consumes credits and has driven 50%+ conversion lifts for customers like Gong (70% increase in demo requests) and Mention (54% improvement in signups).

But the lock-in carries real costs. The standalone Clearbit API no longer exists as a product. There is no Breeze Intelligence API and no integration path to Salesforce, Dynamics, or any other CRM. The free tools (Connect Chrome extension, Weekly Visitor Report, TAM Calculator) were all sunset on April 30, 2025. If you used Clearbit's API to enrich records in a non-HubSpot workflow, that capability is gone.

People Data Labs takes the opposite approach.

As an API-first platform, PDL works with any CRM, any data warehouse, and any custom application. Native integrations exist for Snowflake, Databricks, Salesforce, Zapier, and Make. SDKs ship in Python, JavaScript, Ruby, Go, and Rust. If your team builds custom data pipelines, PDL gives you flexibility.

Source: People Data Labs

ZoomInfo offers both native front-ends and open access.

GTM Workspace integrates natively with Salesforce, HubSpot, and Microsoft Dynamics. The App Marketplace lists 120 partner integrations. For teams building custom tools, API access is included in all relevant plans, with MCP connecting ZoomInfo's data to AI agents in Claude, ChatGPT, and custom applications. You're never locked into a single CRM.

Enrichment vs. prospecting: a critical distinction

Enrichment takes a contact you already have (an email address, a domain) and fills in the missing fields. Prospecting finds contacts you don't have yet. The difference matters.

Clearbit enriches known records.

Submit a work email address, and Clearbit returns company name, industry, employee count, revenue, technology stack, and job seniority. Within HubSpot, this powers lead scoring, workflow routing, and campaign segmentation.

But Clearbit does not offer a searchable contact database. You can't type "VP of Engineering at Series B SaaS companies in New York" and get a list of people to contact. Legacy Clearbit Prospector existed but has been absorbed into HubSpot. Breeze Intelligence enriches known records but does not serve as a contact finder.

People Data Labs does both, but in a developer-facing way.

The Person Search API lets you query the full person dataset using Elasticsearch DSL or SQL, filtering across 140+ attributes. This works well for building recruiting platforms, audience generation tools, or investment research products. It's not a point-and-click prospecting interface, though. You need engineering effort to use it.

Source: People Data Labs

On the free plan, contact data fields are obfuscated (returned as True/False flags rather than actual values), and the tier caps at 100 records per month.

ZoomInfo provides a full prospecting database with a native user interface.

Sales reps search across 300+ company attributes, filter by department org charts, and export contacts with 120M direct-dial phone numbers and 200M+ verified business email addresses. The search experience is designed for the sales rep who needs a list of decision-makers at target accounts, not the developer writing API queries. Enrichment, prospecting, and engagement happen in one workflow.

Intent signals separate reactive data from proactive intelligence

Knowing who your buyers are matters. Knowing when they're actively researching matters more.

Clearbit provides Buyer Intent that identifies companies visiting your website and matches them to your ideal customer profile using IP intelligence.

You can configure up to 10 visitor intent criteria based on specific page visits (pricing pages, case studies, product pages) and set thresholds for minimum visits or unique visitors.

Source: Hubspot

A complementary Research Intent layer identifies companies researching relevant topics across the broader web. Both are useful, but both are confined to HubSpot. You can't push intent signals to external advertising platforms, data warehouses, or non-HubSpot workflows.

People Data Labs does not offer intent data.

The company focuses on person and company profiles. If you need to know which accounts are in-market, PDL won't help. You'd need a separate intent vendor.

ZoomInfo provides intent data at a different scale.

ZoomInfo Intent tracks signals from 210 million IP-to-Organization pairings and 6 trillion+ new keyword-to-device pairings sourced monthly. Guided Intent, exclusive to ZoomInfo, identifies intent topics historically correlated with your deal success rather than requiring you to guess which topics matter.

Source: ZoomInfo

Website visitor tracking through WebSights resolves anonymous traffic to companies and includes Automatic Traffic Filtering that separates real visitors from bots. Forrester named ZoomInfo a Leader in Intent Data Providers for B2B in Q1 2025, giving it the highest possible scores across eight criteria.

The structural advantage: ZoomInfo's intent signals connect to verified contacts. When you identify an in-market account, you can see the buying committee, their direct dials, and their email addresses in one platform. With Clearbit, you see the company but rely on HubSpot's existing contacts. With PDL, you don't see intent at all.

Where the intelligence gap widens

Data enrichment tells you who a contact is. Intent signals tell you when they're interested. But neither tells you why a deal is moving, what's blocking it, or which pattern across thousands of deals predicts what happens next.

This is the gap that ZoomInfo's GTM Context Graph fills.

Processing 1.5 billion+ data points daily, it unifies ZoomInfo's B2B data with a customer's first-party data: CRM records, conversation transcripts (captured through Chorus), email interactions, and behavioral signals. The result is a layer that maps connections between signals and outcomes. Not just that a deal moved to Stage 3, but that it moved because the CFO joined the call and asked about six-month ROI.

That intelligence flows into every part of the platform.

In GTM Workspace, sellers see AI-generated account briefs, prioritized action feeds, and outreach drafted from full account context. Customer results bear this out: Seismic attributed 39% of pipeline to ZoomInfo signals and reported 54% productivity gains. Snowflake achieved 200% higher conversion rates on accounts scored by ZoomInfo-powered models.

In GTM Studio, marketers describe audiences in natural language and launch plays against accounts matching their actual win patterns. Expansion plays that used to take 3 weeks now launch in 30 minutes.

Neither Clearbit nor PDL offers anything comparable. Clearbit enriches records and shows you which companies visit your website. PDL delivers raw profiles via API. ZoomInfo unifies all of it into contextual intelligence, and then acts on it.

API architecture and developer experience

For technical teams, API documentation quality, data delivery flexibility, and sandbox availability can matter as much as the data itself.

Clearbit's legacy REST APIs were widely regarded as the standard for developer-friendly B2B enrichment: clean endpoints, code snippets in Shell, Ruby, Node, and Python, and sub-second response times.

Post-acquisition, those APIs are now login-gated for existing customers. There is no Breeze Intelligence API for new customers. If you need programmatic enrichment outside HubSpot, Clearbit is no longer an option.

People Data Labs offers the most developer-focused experience of the three.

The platform provides a REST API at v5 with endpoints for Person Enrichment, Search, Identify, Bulk Enrichment, Company Enrichment, IP Enrichment, Autocomplete, Cleaner, and Job Title Enrichment.

A sandbox environment returns synthetic data at zero credit cost for integration testing. Preview APIs let you check results before consuming credits. Bulk data delivery is available through S3, Snowflake, GCP, Azure, and direct download. For teams building data pipelines, PDL's delivery options are broad.

Source: People Data Labs

ZoomInfo's Enterprise API is documented at docs.zoominfo.com and organized into four areas: Data API (search and enrich), Copilot API (AI intelligence including account summaries, lookalikes, and contact recommendations), Marketing API (audience management), and Platform API (engagement data).

Authentication uses OAuth 2.0 with PKCE. Where PDL focuses on data delivery, ZoomInfo's API extends into intelligence and execution. The Copilot API surfaces AI-generated account summaries and recommendations, not just raw records.

The MCP server connects AI models to ZoomInfo's data via natural language, enabling AI agents in Claude, ChatGPT, and custom applications to query ZoomInfo without custom coding beyond one-time configuration. API access is included in all relevant plans, so enterprise customers don't pay extra for programmatic access.

Pricing models reflect different business philosophies

Clearbit is embedded in HubSpot's pricing.

Basic enrichment is included at no extra cost for all Starter+ Core Seats. Advanced features like Buyer Intent and Smart Properties consume HubSpot Credits, with 3,000 credits/month included in Professional plans and 5,000 in Enterprise. Additional credits cost $10 per 1,000. Credits expire monthly with no rollover, which penalizes teams with uneven usage.

People Data Labs uses per-match, credit-based pricing.

You pay only when a successful response is returned. The free tier provides 100 credits/month but obfuscates contact data. Full field access requires a Pro plan starting at $100/month. Unused credits carry over up to 100% of the next period's allocation, an advantage over Clearbit's no-rollover policy. Enterprise pricing for bulk data licenses is custom-quoted.

ZoomInfo uses custom-quoted, seat-and-credit-based pricing. No prices are published.

The free ZoomInfo Lite tier provides permanent access with 10 monthly export credits, individual and company searches, email addresses, the ReachOut Chrome extension, and WebSights Lite (up to 10 website visitor reveals per day). Paid plans scale by users, credits, and feature access across three tiers (Professional, Advanced, Enterprise) with distinct capabilities at each level.

The right pricing model depends on how you consume data.

If you're a HubSpot shop doing enrichment, Clearbit's included-with-your-seat model is the simplest path. If you're an engineer building a data product that needs high-volume API access, PDL's per-match pricing gives you granular cost control. If you need the full go-to-market stack (prospecting, intent, execution, and AI) ZoomInfo's custom pricing reflects the breadth of what's included.

Security and compliance comparison

All three platforms take security seriously, but the certification depth varies.

Clearbit holds SOC 2 Type 2 certification, aligns with GDPR principles under legitimate interest, and is registered as a data broker in California.

Infrastructure runs on AWS and GCP with TLS v1.2/v1.3 in transit and AES-256 at rest. The Trust Center consolidates compliance documentation.

People Data Labs holds ISO 27001 and SOC 2 Type 2 certifications, adheres to NIST 800-53r5 at moderate level, and conducts quarterly external penetration testing.

All data is encrypted using FIPS 140-2 compliant algorithms. A Subject Request API enables programmatic processing of GDPR and CCPA data subject requests. The Acceptable Data Use Policy prohibits FCRA-covered purposes and law enforcement use.

ZoomInfo carries the broadest certification stack: ISO 27001, ISO 27701, SOC 2 Type II, TRUSTe GDPR, and TRUSTe CCPA, all renewed annually.

ZoomInfo is a registered data broker in California and Vermont. The ISO 27701 certification (Privacy Information Management System) is a distinction neither Clearbit nor PDL holds, and it matters for enterprise buyers in regulated industries where privacy controls are a procurement requirement.

Clearbit vs. People Data Labs vs. ZoomInfo: which should you choose?

The right platform depends on what you're building, who's using it, and how much of the go-to-market workflow you want one tool to handle.

Choose Clearbit if:

• You're an existing HubSpot user on a paid plan

• You need CRM enrichment with zero integration effort

• Form shortening and lead scoring are priorities

• Your team is marketing or RevOps focused, not building custom data products

• You don't need a prospecting database or CRM-agnostic access

Explore Breeze Intelligence within HubSpot.

Choose People Data Labs if:

• Your team builds data products, not go-to-market campaigns

• You need raw person and company data via API or bulk feeds

• Per-match pricing and developer flexibility matter more than pre-built workflows

• You're powering AI recruiting, investment research, or audience generation tools

• You have engineering resources to build on top of raw data

Start with PDL's free tier and test data quality against your use case.

Choose ZoomInfo if:

• You need a large, verified B2B dataset (contacts, companies, phone numbers, and emails) at scale

• You want intent signals, conversation intelligence, and AI-driven execution alongside your data

• Your team spans sales, marketing, and RevOps and needs one intelligence layer serving all of them

• CRM flexibility matters, because you need to work across Salesforce, HubSpot, Dynamics, or custom applications

• You want to move from reactive data lookups to proactive, AI-powered go-to-market execution

See ZoomInfo in action with a free trial or start with ZoomInfo Lite at no cost.

Clearbit and People Data Labs each do their jobs well. Clearbit makes HubSpot smarter with embedded enrichment. PDL gives developers flexible, large-scale data infrastructure. But for go-to-market teams that need verified data, contextual intelligence, and execution tools in one place (without being locked into a single CRM), ZoomInfo is the platform that neither Clearbit nor PDL was designed to be.