ContactOut vs Seamless.AI: Data Enrichment Tool Comparison
Compare ContactOut and Seamless.AI side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
ContactOut provides 300M+ professional profiles with LinkedIn-focused browser extension and AI email campaigns starting at $49/month for 300 exports. Seamless.AI offers a real-time B2B contact search engine with pitch intelligence starting at $147/month for 250 credits. Both offer free tiers and enterprise plans with custom pricing. ContactOut suits teams prioritizing LinkedIn prospecting and affordable email campaigns, while Seamless.AI fits teams needing real-time search and pitch intelligence capabilities.
Key takeaways
- ContactOut's paid plans start at $49/month for 300 exports, while Seamless.AI's Basic plan costs $147/month for 250 credits.
- ContactOut maintains 300 million professional profiles with LinkedIn-focused browser extension capabilities.
- Both platforms were founded in 2015 and offer free entry tiers for testing before commitment.
- ContactOut integrates with 8 platforms including Greenhouse and Lever, while Seamless.AI connects with 7 platforms including Outreach and SalesLoft.
- Seamless.AI offers 10 listed capabilities including buyer intent data and job changes tracking as add-ons, compared to ContactOut's 9 features.
Reviewed and updated February 6, 2026
ContactOut vs Seamless.AI: Data Enrichment Tool Comparison
ContactOut and Seamless.AI 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
ContactOut stands out with 300m+ professional profiles and browser extension for linkedin. Seamless.AI differentiates itself through real-time b2b contact search engine and email and cell phone lookups.
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 can deliver. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
ContactOut is Email and phone finder with 300M+ professional profiles, LinkedIn-focused browser extension, and AI-powered email campaigns.
Seamless.AI is AI-powered sales lead platform with real-time contact search engine, pitch intelligence, and data enrichment for B2B prospecting.
Both platforms offer data enrichment. Where they diverge is in their approach to pricing tiers and advanced capabilities.
Pricing Comparison
ContactOut Pricing (as of February 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Free | Free | 5 emails/day, 5 phones/day | N/A |
| $49/mo | 300 exports/month | Unlimited emails | |
| Email + Phone | $99/mo | 600 exports/month | Unlimited emails and phones |
| Team / API | Contact Sales | Custom | Custom |
Source: ContactOut Pricing
Seamless.AI Pricing (as of February 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Free | Free | 50 credits | N/A |
| Basic | $147/mo | 250 credits/month | N/A |
| Pro | Contact Sales | Daily credit refresh | N/A |
| Enterprise | Contact Sales | Custom credits | N/A |
Source: Seamless.AI 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
ContactOut Key Features
- 300M+ professional profiles
- Browser extension for LinkedIn
- Email campaigns
- AI email writer
- Data enrichment
- List builder
- Search portal
- Bulk license (700M+ profiles on Team)
- CSV export
Seamless.AI Key Features
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Data enrichment
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- Autopilot list building (add-on)
- AI writing assistant
- Chrome extension
- Enterprise security and compliance
Shared Capabilities
Both ContactOut and Seamless.AI include:
- Data enrichment
Unique to ContactOut
- 300M+ professional profiles
- Browser extension for LinkedIn
- Email campaigns
- AI email writer
- List builder
- Search portal
- Bulk license (700M+ profiles on Team)
- CSV export
Unique to Seamless.AI
- Real-time B2B contact search engine
- Email and cell phone lookups
- Pitch intelligence
- Buyer intent data (add-on)
- Job changes tracking (add-on)
- Autopilot list building (add-on)
- AI writing assistant
- Chrome extension
- Enterprise security and compliance
Integration Ecosystem
ContactOut Integrations
ContactOut connects with: Salesforce, HubSpot, Greenhouse, Lever, Bullhorn, Zapier, Gmail, Outlook.
Seamless.AI Integrations
Seamless.AI connects with: Salesforce, HubSpot, Outreach, SalesLoft, Pipedrive, Microsoft Dynamics 365, Zapier.
Shared Integrations
Both tools integrate with: Salesforce, HubSpot, Zapier.
ContactOut exclusively offers: Greenhouse, Lever, Bullhorn, Gmail, Outlook.
Seamless.AI exclusively offers: Outreach, SalesLoft, Pipedrive, Microsoft Dynamics 365.
Use Case Recommendations
Best Fit for ContactOut
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for Seamless.AI
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that need a wide feature set (10 capabilities listed)
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | ContactOut | Seamless.AI |
|---|---|---|
| Starting Price | Free | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 9 | 10 |
| Integrations | 8 | 7 |
| Founded | 2015 | 2015 |
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
ContactOut and Seamless.AI both serve the B2B lead data and contact enrichment market well. ContactOut offers a more accessible entry point, while Seamless.AI 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.
Related Reading
- Best ContactOut Alternatives in 2026
- Best Seamless.AI Alternatives in 2026
- Apollo.io vs ContactOut: Data Enrichment Tool Comparison
- ContactOut vs ZoomInfo: Data Enrichment Tool Comparison
- Apollo.io vs Seamless.AI: Data Enrichment Tool Comparison
Pricing and features verified as of February 2026. Visit ContactOut and Seamless.AI for current information.
Frequently asked questions.
Frequently asked questions- Which is cheaper, ContactOut or Seamless.AI?
- ContactOut is more affordable at the entry paid tier, charging $49/month for 300 exports compared to Seamless.AI's $147/month for 250 credits. Both offer free plans to start, with ContactOut providing 5 emails and phones per day, while Seamless.AI offers 50 credits. For enterprise needs, both require contacting sales for custom pricing.
- What's the main difference between ContactOut and Seamless.AI?
- ContactOut focuses on email and phone finding with 300M+ professional profiles and LinkedIn browser extension, emphasizing email campaign capabilities. Seamless.AI positions itself as an AI-powered sales lead platform with real-time contact search engine, pitch intelligence, and buyer intent data. ContactOut suits LinkedIn-heavy prospecting workflows, while Seamless.AI targets teams needing real-time search and intelligence features.
- Do ContactOut and Seamless.AI integrate with the same CRM platforms?
- Both integrate with Salesforce, HubSpot, and Zapier as shared platforms. ContactOut exclusively offers connections to Greenhouse, Lever, Bullhorn, Gmail, and Outlook, totaling 8 integrations. Seamless.AI uniquely integrates with Outreach, SalesLoft, Pipedrive, and Microsoft Dynamics 365, providing 7 total integrations. Choose based on your existing sales engagement and ATS tools.
- Can I try ContactOut and Seamless.AI before paying?
- Yes, both platforms offer free tiers for testing. ContactOut's free plan includes 5 emails and 5 phone numbers per day. Seamless.AI provides 50 credits on its free plan. Both companies were founded in 2015 and allow you to evaluate core features before committing to paid plans, making it possible to test both platforms side-by-side with your actual prospecting workflow.
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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