The Companies API vs Vainu: Data Enrichment Tool Comparison
Compare The Companies API and Vainu side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Compare The Companies API and Vainu side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Reviewed and updated September 4, 2026
The Companies API vs Vainu: Data Enrichment Tool Comparison
The Companies API and Vainu compete head-to-head in the B2B lead data and contact enrichment space. This guide compares their pricing tiers, feature sets, and integration ecosystems to help you make a confident decision.
The Quick Answer
By each vendor's own wording, The Companies API lists domain to company profile enrichment and access to all 50m companies, while Vainu lists company database for denmark, finland, norway and sweden and prospecting lists. A capability both offer can appear under different names, so read both feature lists below.
The Companies API publishes an entry price of $0/mo; Vainu uses custom pricing, so the two cannot be compared on list price.
If your priority is finding accurate contact data for target accounts, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
The Companies API is The Companies API is a company enrichment API that turns a domain name into a structured company profile with firmographics such as industry, employee count, founding year and revenue across 50 million companies. Plans are monthly credit allowances with a request-rate limit.
Vainu is Vainu is a Nordic company and contact data platform for B2B prospecting, CRM enrichment and data delivery, with databases for Denmark, Finland, Norway and Sweden. Products are Vainu for Prospecting, Vainu for CRM and Vainu for Data, priced per year in euros with a one-time onboarding fee.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Free
Vainu for Prospecting
The Companies API Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Free | Free | 500 credits |
| Startup | $95/mo | 50000 credits per month |
| Scaleup | $295/mo | 250000 credits per month |
| Enterprise | $595/mo | 500000 credits per month |
Source: The Companies API Pricing
Vainu Pricing (as of September 2026)
| Plan | Price |
|---|---|
| Vainu for Prospecting | Contact Sales |
| Vainu for CRM | Contact Sales |
| Vainu for Data | Contact Sales |
Source: Vainu Pricing
Pricing Analysis
One or both platforms use custom or contact-based pricing for some tiers. Reach out to their sales teams for exact quotes based on your usage needs.
The Companies API offers 4 pricing tiers compared to Vainu's 3, giving you more granularity as you scale.
The Companies API includes a free tier, letting you test the platform before committing financially.
Features Breakdown
- Domain to company profile enrichment
- Access to all 50M companies
- Firmographics: industry, employee count, founding year, revenue
- Company lists
- Additional credits at a per-1,000 rate
- Rate-limited API by plan
- Company database for Denmark, Finland, Norway and Sweden
- Prospecting lists
- CRM enrichment
- Data delivery and API
- Preview file before download
The Companies API Key Features
- Domain to company profile enrichment
- Access to all 50M companies
- Firmographics: industry, employee count, founding year, revenue
- Company lists
- Additional credits at a per-1,000 rate
- Rate-limited API by plan
Vainu Key Features
- Company database for Denmark, Finland, Norway and Sweden
- Prospecting lists
- CRM enrichment
- Data delivery and API
- Preview file before download
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by The Companies API
- Domain to company profile enrichment
- Access to all 50M companies
- Firmographics: industry, employee count, founding year, revenue
- Company lists
- Additional credits at a per-1,000 rate
- Rate-limited API by plan
Listed only by Vainu
- Company database for Denmark, Finland, Norway and Sweden
- Prospecting lists
- CRM enrichment
- Data delivery and API
- Preview file before download
Integration Ecosystem
The Companies API Integrations
The Companies API connects with: .
Vainu Integrations
Vainu connects with: Salesforce, HubSpot, Pipedrive, Microsoft Dynamics.
Integrations listed only by Vainu: Salesforce, HubSpot, Pipedrive, Microsoft Dynamics.
Use Case Recommendations
Best Fit for The Companies API
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that need a wide feature set (6 capabilities listed)
- Teams that want to start free and scale up as needs grow
Best Fit for Vainu
- Organizations with complex tech stacks needing broad integration support (4 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
Feature Comparison Summary
| Feature | The Companies API | Vainu |
|---|---|---|
| Starting Price | Free | Contact Sales |
| Top Tier Price | $595/mo | Contact Sales |
| Total Features Listed | 6 | 5 |
| Integrations | 0 | 4 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected data credits or contact lookups to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
The Companies API and Vainu both serve the B2B lead data and contact enrichment market. The Companies API publishes an entry price (a free tier), while Vainu uses custom pricing for its plans, so compare on features and on the quote you receive. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit The Companies API and Vainu for current information.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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