10 Best Company Data APIs for Enriching B2B Company Information
Manasa Goli
Published October 3, 2026
19 min
Complete Agentic Email Outreach
AI agents find and enrich prospects, personalize emails, follow up, handle replies, and book meetings automatically.
Claim Your FREE Credits
Your CRM may tell you a company name and website, but that rarely gives you enough information to qualify an account, personalize outreach, or route a lead correctly.
A good company data API can turn a domain or company name into structured information such as industry, employee count, location, revenue, technologies, funding, and company relationships.
But choosing one is not as simple as picking the provider with the biggest database.
In this guide, you’ll learn:
- What a company data API actually provides
- Which company data APIs are worth considering in 2026
- How their coverage, enrichment fields, pricing, and API capabilities differ
- Which provider fits different B2B data workflows
- How to evaluate data quality before committing to an API
- How company data APIs can fit into an automated outbound workflow
What Is a Company Data API?
Explain the concept through the workflow rather than giving a dictionary-style definition.
Show:
Input
company.com
↓
Company data API
↓
Structured company profile
- Company name
- Domain
- Industry
- Employee count
- Revenue
- Location
- Founded year
- Technologies
- Funding
- Social profiles
- Parent/subsidiary relationships
- Hiring or growth signals
Then explain the difference between:
10 Best Company Data APIs for B2B Enrichment
Open this section with a comparison table so readers can understand the landscape before reading individual reviews.
Quick Comparison
1. People Data Labs
People Data Labs gives you programmatic access to company information through its Company Enrichment API and Company Search API. Its company database contains 70M+ company profiles, covering everything from startups to large enterprises.
You can use the enrichment API when you already have a company identifier and want to retrieve additional information. The Search API is useful when you want to discover companies based on attributes rather than starting with a known company.
What the People Data Labs API Does
The API can help you:
- Enrich an existing company record
- Search its company database
- Retrieve firmographic information
- Find companies based on defined attributes
- Access company and people data programmatically
- Use company data inside your own applications and workflows
The Company Enrichment API is designed for on-demand lookups, while the Search API lets you query the broader company dataset.
PDL says company records are refreshed monthly.
Key Features
- Company Enrichment API: Enrich a company using available identifiers.
- Company Search API: Search across 70M+ company profiles.
- Firmographic data: Retrieve information such as company size, industry, and other business attributes.
- People + company data: Connect company information with person-level data.
- Data feeds: Access company data for larger-scale data applications.
Pros
- Large company database
- Supports both search and enrichment
- Useful for custom applications
- Company and people data are available through the same ecosystem
Cons
- Credit-based usage requires careful planning
- More suitable for teams building their own data workflows
- You may need additional tools for prospecting and outreach
Pricing
People Data Labs uses credit-based pricing for its API products. Its public pricing for Company Enrichment and Company Search starts at $100/month for 1,000 credits, with lower per-credit pricing at higher volumes.
API Limits
API limits depend on the PDL product and plan. Check the account-level documentation before running high-volume enrichment.
2. Crustdata
Crustdata's Data Enrichment API takes information you already have, such as a company domain, and returns a richer company record.
Its company enrichment API can return 250+ company data points sourced from 15+ sources, including information such as headcount, funding, and technology data.
This makes it useful when your starting record contains only basic information and you want to turn it into a more complete company profile.
What the Crustdata API Does
You can use the API to:
- Enrich existing company records
- Search for companies using filters
- Retrieve company firmographics
- Get headcount and workforce information
- Retrieve funding information
- Access technology-related data
- Pull company and people information
Key Features
- Company Enrichment API: Add data to an existing company record.
- Company Search API: Find companies using filters.
- Headcount data: Understand company size and workforce changes.
- Funding data: Retrieve company funding information.
- Technology data: Identify technology-related attributes.
- Real-time enrichment: Retrieve refreshed information when enrichment is requested.
Pros
- Designed specifically around B2B data enrichment
- Broad company data coverage
- Includes signals beyond basic firmographics
- Useful for automated enrichment workflows
Cons
- Credit consumption varies by API operation
- More advanced data can increase enrichment costs
- You may not need all of its signals for basic company lookups
Pricing
Crustdata uses a credit-based pricing model. Each enrichment endpoint consumes credits based on the data returned, and pricing varies by volume and endpoint.
API Limits
Rate limits depend on the API and plan. Check the provider's current API documentation for the endpoint you plan to use.
3. Coresignal
Coresignal provides APIs for retrieving company, employee, and job data. Its Company API is designed for finding and retrieving specific company records, while its broader datasets can support large-scale analysis.
Coresignal currently lists 70M+ company records in its company dataset.
What the Coresignal API Does
You can use Coresignal to:
- Retrieve company records
- Search company data
- Enrich company information
- Access employee information
- Search job postings
- Build workforce and company datasets
- Use historical company and employee information
Key Features
- Company API: Find and retrieve company records.
- Employee API: Access employee profiles and workforce information.
- Jobs API: Search job postings.
- Contact Enrichment API: Enrich contact information.
- Historical datasets: Useful for analyzing changes over time.
- Bulk datasets: Available for larger data requirements.
Pros
- Large company dataset
- Company, employee, and job data in one ecosystem
- Useful for historical analysis
- Supports API and dataset-based workflows
Cons
- Credit usage varies by action
- More data-oriented than sales-platform oriented
- Some use cases require more technical implementation
Pricing
Coresignal's public pricing starts at $49/month for 2,500 credits on its Mini plan. Higher plans include $199, $499, $1,000, $1,500, $3,000, and $5,000 monthly tiers.
Company and employee records generally consume 10–20 credits, while a job posting consumes 1 credit.
API Limits
The Data API rate limit starts at 5 requests/second on the lower plans and increases to 10, 20, 50, 100, and 100+ requests/second across higher tiers.
4. Explorium
Explorium's API is designed for enriching business records with additional company and market signals.
Rather than limiting the API to basic fields such as company name, industry, or employee count, Explorium focuses on combining multiple business-data sources to support enrichment, targeting, and GTM use cases.
What the Explorium API Does
You can use it to:
- Enrich company records
- Add firmographic information
- Add business and market signals
- Build targeted company lists
- Combine multiple data sources
- Feed enriched information into GTM workflows and applications
Key Features
- Company enrichment
- Firmographic data
- Business intelligence
- Intent signals
- Multi-source enrichment
- Data matching
- AI and agent-oriented workflows
- API-based data access
Pros
- Goes beyond basic firmographics
- Useful for complex enrichment requirements
- Multiple business signals in one platform
- Suitable for GTM data workflows
Cons
- Can be more than you need for basic company lookup
- Pricing depends on the data and volume required
- Requires a clear enrichment use case
Pricing
Explorium uses usage/credit-based and custom pricing, depending on the data and workflow requirements.
API Limits
API limits depend on the plan and endpoint. Check the provider documentation for the specific API you intend to integrate.
Suggested Reading:
Hire Date vs. Start Date: What’s the Difference?5. Apollo
Apollo's API lets you search and enrich companies and contacts using the same underlying sales-intelligence platform.
For company data specifically, its Organization Enrichment endpoint can enrich an existing company record, while organization search lets you discover companies based on search criteria. Apollo charges 1 credit per organization for organization enrichment.
What the Apollo API Does
You can use Apollo's API to:
- Search for companies
- Enrich company records
- Retrieve complete company information
- Search for contacts
- Enrich people
- Retrieve job-posting information
- Connect company data with prospecting workflows
Key Features
- Organization Enrichment: Enrich one company at a time.
- Bulk Organization Enrichment: Enrich up to 10 companies in one API call.
- Organization Search: Search Apollo's company database.
- Company information: Retrieve complete organization records.
- People enrichment: Connect company data with decision-maker information.
- Job postings: Retrieve company job-posting information.
Pros
- Company and contact data in one platform
- Useful when enrichment leads directly into prospecting
- Supports both search and enrichment
- Strong sales-workflow integration
Cons
- API credit usage varies by endpoint
- Not designed purely as a standalone company-data database
- Some API capabilities depend on your Apollo plan
Pricing
Apollo's API uses credits for several search and enrichment operations.
Organization enrichment costs 1 credit per organization, while organization search costs 1 credit per page, with up to 100 results per page.
API Limits
Apollo's standard API limits are:
For enrichment endpoints, paid plans allow up to 1,000 requests/minute, while search endpoints allow up to 200 requests/minute.
6. Diffbot
Diffbot is different from traditional B2B company databases.
Instead of only maintaining a conventional company directory, it uses web extraction and its Knowledge Graph to turn information found across the web into structured entities and relationships.
What the Diffbot API Does
You can use Diffbot to:
- Extract information from webpages
- Identify companies and other entities
- Query its Knowledge Graph
- Retrieve structured company information
- Search web information
- Build custom web-data pipelines
Key Features
- Knowledge Graph API
- Extract API
- Natural Language API
- Web Search API
- Entity relationships
- Structured web data
- Web crawling
Pros
- Useful when you need web-derived company information
- Powerful entity and relationship capabilities
- Suitable for custom data applications
- Multiple APIs for different data tasks
Cons
- More technical than conventional enrichment platforms
- Credit consumption varies significantly by API
- Can be expensive for high-volume Knowledge Graph use
Pricing
Diffbot currently offers:
A Knowledge Graph entity export costs 25 credits, while an enhanced entity record also costs 25 credits.
API Limits
- Free: 5 requests/minute
- Startup: 5 requests/second
- Plus: 25 requests/second
- Enterprise: Custom limits
The Extract API also has a 10,000-call/month limit on the Free plan.
7. CompanyEnrich
CompanyEnrich provides APIs that let you search for companies or enrich a company using its domain.
Its domain enrichment endpoint takes a company domain and returns a company profile, making it useful when your workflow already has a list of websites and needs structured company information. The standard enrichment call costs 1 credit.
What the CompanyEnrich API Does
You can use it to:
- Enrich a company from its domain
- Search companies by attributes
- Find similar companies
- Search for people
- Retrieve company firmographics
- Retrieve technology and workforce information
- Process company lists in batches
Key Features
- Company Enrichment API
- Company Search API
- Semantic Company Search
- Similar Companies API
- People Search API
- Headcount API
- Batch enrichment
- Bulk enrichment
- AI-agent/MCP support
The company search API currently indexes 33M+ companies.
Pros
- Simple domain-to-company enrichment
- Transparent credit model
- Real-time company data
- Search and enrichment APIs
- Supports batch and bulk processing
Cons
- Coverage should still be tested against your ICP
- Different endpoints consume different numbers of credits
- Advanced enrichment can cost more than basic company lookup
Pricing
Current public plans are:
The standard Company Enrichment API costs 1 credit, while Company Search costs 1 credit per company. Semantic Search costs 2 credits/company, Similar Companies costs 5 credits/company, and Find Email costs 10 credits.
API Limits
- Starter: 60 requests/minute
- Pro: 120 requests/minute
- Scale: 600 requests/minute
The Scale plan also supports synchronous batches of up to 50 domains/request and asynchronous bulk jobs of up to 10,000 domains/job.
Suggested Reading:
Headcount Planning: A Strategic Guide for HR Leaders8. ZoomInfo
ZoomInfo provides company and contact intelligence that can be accessed through its broader platform and integrations.
For company research, it covers information such as firmographics, organizational structures, technology usage, and intent-related signals.
What the ZoomInfo API Does
Depending on your licensed access, you can use ZoomInfo data to:
- Retrieve company information
- Enrich company records
- Access firmographic information
- Understand company hierarchy
- Retrieve technographic information
- Add intent signals
- Connect company information with CRM workflows
Key Features
- Company profiles
- Firmographics
- Company hierarchy
- Contact information
- Technographics
- Intent data
- Organizational information
- CRM/API integrations
Pros
- Broad B2B intelligence coverage
- Useful for enterprise sales teams
- Company and contact information are connected
- Includes data beyond basic firmographics
Cons
- Enterprise-focused
- API pricing is not publicly standardized
- Can be more than you need for simple enrichment
- Access depends on your contract and licensed products
Pricing
ZoomInfo uses custom enterprise pricing rather than publishing a standard public API price.
API Limits
API limits depend on your licensed product, contract, and endpoint. Treat your account documentation as the source of truth rather than using a generic rate-limit number.
9. Crunchbase
Crunchbase's API is built around company and investment intelligence.
You can use it to search for companies, look up specific entities, retrieve groups of entities, and work with information around funding, investors, acquisitions, and company activity.
What the Crunchbase API Does
You can use the API to:
- Search company records
- Look up specific companies
- Retrieve company information
- Search funding-related information
- Access investor information
- Research acquisitions
- Build company and market intelligence workflows
Key Features
- Entity Lookup API
- Search APIs
- Autocomplete API
- Company profiles
- Funding data
- Investor information
- Acquisition information
- Company intelligence
Pros
- Strong funding and investment information
- Useful for startup and market research
- Search and entity lookup capabilities
- Useful for building company intelligence applications
Cons
- More specialized than a general enrichment API
- Full API access requires appropriate licensing
- Not the best fit if you only need basic firmographics
Pricing
Crunchbase API access is license-dependent. Full API access is generally associated with Enterprise or Applications licensing rather than a simple self-serve API subscription.
API Limits
Crunchbase documents a rate limit of 200 API calls per minute.
10. OpenCorporates
OpenCorporates takes a different approach from sales-focused company databases.
Its API gives you access to corporate-registry information, making it useful when you need to identify legal entities, verify company registrations, or research corporate relationships.
What the OpenCorporates API Does
You can use it to:
- Search registered companies
- Look up legal entities
- Search by jurisdiction
- Retrieve company registration information
- Investigate corporate relationships
- Build legal-entity research workflows
Key Features
- Company search
- Legal-entity records
- Jurisdiction data
- Corporate relationships
- Registry information
- API access
- Entity matching
Pros
- Strong focus on legal entities
- Useful for company verification
- Broad corporate-registry coverage
- Useful for compliance and corporate research
Cons
- Less useful for sales prospecting
- Does not replace a modern GTM enrichment database
- Registry records may not contain fields such as intent or technology usage
Pricing
OpenCorporates uses usage-based API access and paid plans depending on the volume and type of data required. Pricing should be checked against the current API plan before publication.
API Limits
API limits depend on the OpenCorporates plan and endpoint. Use the provider's current API documentation when specifying exact request limits.
How Much Does a Company Data API Cost?
Comparing company data APIs only by their monthly subscription price can be misleading.
Most providers use credits, successful matches, API calls, or different charges for different types of data. One company lookup may cost much less than a lookup that also requests workforce, contact, or premium attributes.
So instead of asking only “How much does the API cost?”, calculate what you pay for each usable company record.
Example calculation
Suppose an API costs:
$500/month
You submit:
10,000 companies
And the API successfully returns useful records for:
7,000 companies
Your actual cost is:
$500 ÷ 7,000 = $0.071 per usable company
That is more useful than saying the API costs $500/month.
You can also compare the providers using:
Cost per usable record = Total API cost ÷ Successfully enriched companies
Pricing comparison
Credit models can become particularly difficult to compare because the same “credit” does not necessarily represent the same amount of data. Current API pricing from PDL, Coresignal, CompanyEnrich, Apollo, and Diffbot demonstrates that providers meter different actions differently.
What Company Data Fields Should You Enrich?
You don't need every possible field.
The right fields depend on what you are trying to do with the enriched company record.
The important distinction is between data you can collect and data you actually need.
If your workflow only needs to segment companies by industry and employee count, paying for funding, technology, and intent data may add unnecessary cost.
How to Test a Company Data API Before Buying
A small test can tell you more than a vendor's database-size claim.
Step 1: Build a representative test set
Start with around 100–500 companies that resemble your actual ICP.
Include a mix of:
- Different industries
- Different company sizes
- Different countries
- Startups
- Established companies
- Companies with strong and weak web presence
Don't test only well-known companies because they are usually easier for data providers to identify.
Step 2: Test the fields you actually need
For every provider, measure:
- Match rate: How many companies were identified?
- Field fill rate: How many requested fields were populated?
- Accuracy: How many returned values were correct?
- Freshness: How recently was the information updated?
- Duplicate rate: How often were companies represented more than once?
Step 3: Calculate cost per usable record
Don't compare only:
$49 vs. $149 vs. $500
Instead compare:
Total cost ÷ usable enriched companies
This gives you a more realistic view of economics.
Step 4: Test API performance
Check:
- Response time
- Batch limits
- Rate limits
- Error rate
- Retry behavior
- Webhooks
- Pagination
- Async processing
A provider can have good data and still create implementation problems if the API cannot handle your workload.
Step 5: Test downstream compatibility
Finally, ask:
Can the returned data flow directly into your CRM, warehouse, enrichment workflow, AI agent, or sales automation system?
A technically impressive API can still create extra work if your team needs to transform every response before using it.
Suggested Reading:
10 Proactive Recruitment Strategies to Build a Talent PipelineCompany Data APIs Become More Powerful When You Add Waterfall Enrichment
Even a strong company database will have gaps.
One provider may return a company but miss its technology stack. Another may have stronger international coverage. A third may provide better hiring or funding signals.
That is why many modern enrichment workflows use multiple sources instead of relying on one database.
Single-provider model
Company → Provider A → Result / No Result
If Provider A cannot find the company or a required field, your workflow stops.
Waterfall model
Company → Provider A → Provider B → Provider C → Verified Result
The second provider is queried only when the first source cannot supply the required information.
This can improve coverage while letting you control how much you spend on enrichment.
The important thing is to define your waterfall rules carefully. You don't want to call every provider for every company because that can increase costs without improving the final record.
Using Oppora to Enrich and Activate Company Data
Choosing a company data API solves only one part of the outbound problem.
Once the data is available, you still need to identify decision-makers, enrich and verify contacts, personalize messages, send outreach, handle replies, and push activity into your CRM.
Oppora approaches this as one connected workflow rather than treating enrichment as a standalone task.
Its product information describes 8 AI sales agents that can work across prospecting, enrichment, emailing, replying, and CRM workflows. It also supports multiple enrichment providers and lets users connect their own data-provider API.
Company data workflow inside Oppora
Find companies
↓
Identify decision-makers
↓
Enrich company and contact data
↓
Verify
↓
Score
↓
Personalize
↓
Send outreach
↓
Handle replies
↓
Book meetings
↓
Sync with CRM
The important part is what happens after enrichment.
Instead of exporting enriched data into another system and manually continuing the workflow, Oppora.ai is designed to connect data sourcing with the rest of the outbound process.
Its current product material also describes waterfall sourcing, multiple enrichment providers, real-time email verification, and optional data-provider API integrations.
That makes the company data API one component of a larger automated sales workflow rather than the entire solution.
How to Choose the Right Company Data API
There isn't one provider that fits every company-data use case.
Start with the type of information you actually need.
The key is to match the provider to the job you need the data to perform.
A large database is useful if you need broad discovery.
A real-time enrichment API is more useful if you already have company domains and need current information.
A funding database matters more if investment activity drives your targeting.
And a multi-source workflow becomes more useful when no single provider consistently covers your entire ICP.
Key Metrics to Compare Before Choosing
Before you commit to a provider, compare these metrics using the same test dataset.
You should also test the metrics against your own ICP.
A provider can report strong overall coverage while producing weaker results for your specific industries, regions, or company sizes.
Final Takeaway
A company data API can save you from manually researching every business, but the right provider depends on what you need from the data.
Some platforms focus on large company datasets. Others specialize in real-time enrichment, hiring signals, funding information, technology data, or enterprise sales intelligence.
So don't choose based only on database size or monthly price.
Test the providers against your own companies and compare:
match rate + field coverage + accuracy + freshness + cost per usable record.
That gives you a much more realistic view of which company data API fits your B2B workflow.
Frequently Asked Questions
Can a company data API enrich a company using only its domain name?
Yes. Many company enrichment APIs can use a domain as the primary input and return details such as company name, industry, location, employee count, technologies, funding, and other firmographic data.
How accurate is data returned by a company database API?
Accuracy varies by provider, geography, company size, and data field. You should test match rates, field-level accuracy, duplicate rates, and data freshness using companies that represent your actual target market.
How should you compare the cost of different company data APIs?
Don't compare subscription prices alone. Calculate the cost per usable company record after considering match rates, included fields, credits consumed, failed lookups, and the amount of data you actually receive.
What should you test before committing to a company data API?
Test a representative sample of your target companies and measure match rate, field completeness, accuracy, freshness, response time, API limits, duplicate handling, and cost per usable record.
Summarize with AI
Share
