TheirStack vs ZoomInfo: Data Enrichment Tool Comparison
Compare TheirStack and ZoomInfo side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
TheirStack and ZoomInfo both start free, but they solve the enrichment problem differently. TheirStack offers job search, company lookup, and technographics with an API tier at $49 per month, while ZoomInfo provides 260 million professional profiles and intent data with paid tiers reaching $3333 per month. Choose based on budget, feature needs, and integrations.
Key takeaways
- TheirStack's API, Webhooks and MCP plan costs $49 per month and includes 1,500 API credits per month.
- ZoomInfo's paid tiers range from $1250 per month for Professional to $3333 per month for Elite.
- TheirStack lists 8 features and 5 integrations, including Clay, LinkedIn Audiences, Make, N8N, and Zapier.
- ZoomInfo lists 9 features and 6 integrations, including Salesforce, HubSpot, Microsoft Dynamics 365, Marketo, Outreach, and SalesLoft.
- TheirStack was founded in 2021, while ZoomInfo's founding year is not listed in the comparison.
Reviewed and updated September 4, 2026
TheirStack vs ZoomInfo: Data Enrichment Tool Comparison
TheirStack and ZoomInfo are both data enrichment tools. Choosing between them depends on your team size, budget, and specific B2B lead data and contact enrichment requirements. Here is what each vendor publishes about pricing, features, and integrations.
The Quick Answer
By each vendor's own wording, TheirStack lists job search and company search, while ZoomInfo lists 260m+ published professional profiles and 100m+ company profiles. A capability both offer can appear under different names, so read both feature lists below.
Both start at the same price point ($0/mo), so the decision comes down to features and workflow fit.
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
TheirStack is Job posting and technographics database for sales teams. Finds companies by the technologies they use and the roles they are hiring for, and enriches a company list with technographics and buying intent.
ZoomInfo is Enterprise B2B database with 260M+ professional profiles, intent data, and comprehensive company intelligence.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
TheirStack Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 50 company credits and 200 API credits per month |
| App | Usage-based | Company credit packs from 1,000 to 200,000 credits |
| API, Webhooks & MCP | $49/mo | 1,500 API credits per month |
| Datasets | Contact Sales | Jobs, Technographics and Buying intents datasets |
Source: TheirStack Pricing
ZoomInfo Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Lite (Free) | Free | 10-25 credits/month | N/A |
| Professional | $1250/mo | 5,000 credits/year | N/A |
| Advanced | $2083/mo | 10,000 credits/year | N/A |
| Elite | $3333/mo | 10,000 credits/year | N/A |
Source: ZoomInfo Pricing
Pricing Analysis
Both platforms start at the same $0/mo price point. The decision comes down to which feature set and tier structure works better for your expected usage.
Both platforms offer free tiers, so you can test each one before spending anything.
Features Breakdown
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- and 2 more listed below
- 260M+ published professional profiles
- 100M+ company profiles
- 150M+ direct emails
- 135M+ verified phone numbers
- 65M+ direct dials
- Intent signals (11K+ topics)
- and 3 more listed below
TheirStack Key Features
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
ZoomInfo Key Features
- 260M+ published professional profiles
- 100M+ company profiles
- 150M+ direct emails
- 135M+ verified phone numbers
- 65M+ direct dials
- Intent signals (11K+ topics)
- Technographic data
- ZoomInfo Copilot AI
- GTM Studio
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 TheirStack
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
Listed only by ZoomInfo
- 260M+ published professional profiles
- 100M+ company profiles
- 150M+ direct emails
- 135M+ verified phone numbers
- 65M+ direct dials
- Intent signals (11K+ topics)
- Technographic data
- ZoomInfo Copilot AI
- GTM Studio
Integration Ecosystem
TheirStack Integrations
TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.
ZoomInfo Integrations
ZoomInfo connects with: Salesforce, HubSpot, Microsoft Dynamics 365, Marketo, Outreach, SalesLoft.
Integrations listed only by TheirStack: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Integrations listed only by ZoomInfo: Salesforce, HubSpot, Microsoft Dynamics 365, Marketo, Outreach, SalesLoft.
Use Case Recommendations
Best Fit for TheirStack
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for ZoomInfo
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that need a wide feature set (9 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (6 integrations)
- Teams that want to start free and scale up as needs grow
Feature Comparison Summary
| Feature | TheirStack | ZoomInfo |
|---|---|---|
| Starting Price | Free | Free |
| Top Tier Price | Contact Sales | $3333/mo |
| Total Features Listed | 8 | 9 |
| Integrations | 5 | 6 |
| Founded | 2021 | N/A |
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
TheirStack and ZoomInfo both serve the B2B lead data and contact enrichment market. TheirStack offers a more accessible entry point, while ZoomInfo starts at $0/mo. 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 TheirStack and ZoomInfo for current information.
Frequently asked questions.
Frequently asked questions- Which is cheaper, TheirStack or ZoomInfo?
- Both platforms offer a free tier at $0 per month. Beyond that, TheirStack's paid API, Webhooks and MCP plan starts at $49 per month, while ZoomInfo's paid tiers start at $1250 per month for Professional and reach $3333 per month for the Elite plan.
- What integrations does TheirStack support?
- TheirStack connects with Clay, LinkedIn Audiences, Make, N8N, and Zapier, totaling 5 listed integrations. These are the integrations TheirStack publishes on its own site and are not shared with ZoomInfo's listed integrations.
- What integrations does ZoomInfo support?
- ZoomInfo connects with Salesforce, HubSpot, Microsoft Dynamics 365, Marketo, Outreach, and SalesLoft, totaling 6 listed integrations. These focus heavily on CRM and sales engagement tools, which differs from TheirStack's integration list.
- What is the main difference between TheirStack and ZoomInfo?
- TheirStack is built around job postings, technographics, and company search for finding companies by hiring activity and tech stack. ZoomInfo is an enterprise B2B database with 260 million plus professional profiles, intent data across 11,000 plus topics, and broader company intelligence.
- Which tool has more features listed?
- ZoomInfo lists 9 features compared to TheirStack's 8, based on each vendor's own published feature list. The comparison notes that a capability offered by both tools can appear under different names, so the feature counts reflect wording rather than total capability.
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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