Looking for a tool that can access over 275 million contacts and 73 million companies? While Seamless AI alternatives like Persana AI offer this massive reach, choosing the right platform isn't just about the numbers.

If you're tired of your current solution or just starting your search, I've compiled an honest, hands-on review of the top 10 Seamless AI alternatives. Let's find the perfect fit for your specific needs and budget.

What is Seamless.AI?

Seamless.AI functions as a real-time search engine specifically designed for B2B companies seeking accurate sales leads. Unlike traditional lead databases, Seamless.AI actively scours the public web whenever you search, delivering fresh contact information rather than potentially outdated stored data.

Key capabilities include:

• AI-powered real-time search for discovering lead data

• Contact and company search functions with filtering options

• Data enrichment to update and complete existing contact records

• Integration with popular CRMs like Salesforce and HubSpot

• Buyer intent data to identify high-potential prospects (in higher-tier plans)

Here’s our list of 10 best Seamless.ai competitors and alternatives.

1. Persana AI: All-in-One Sales Intelligence Platform

As a first stop in our journey through Seamless AI alternatives, Persana AI stands out as a robust contender in the sales intelligence space. During my testing, I found this platform offers a unique blend of contact discovery and AI-powered analytics that addresses many pain points sales teams face daily.

Persana AI key features and capabilities

Persana AI delivers a comprehensive suite of tools designed to streamline prospecting workflows. The platform excels in several areas:

• Real-time contact validation that ensures you're working with accurate data

• Advanced filtering options allowing teams to narrow searches by industry, company size, and technology stack

• Engagement tracking to monitor prospect interactions across channels

• Chrome extension for quick access while browsing LinkedIn or company websites

What impressed me most was Persana's accuracy rate for email addresses—noticeably higher than what I experienced with Seamless AI. The platform also offers intent data that helps identify companies actively researching solutions in your space, a valuable feature for prioritizing outreach.

Persana AI Integration

Integration capabilities make or break sales intelligence tools. Fortunately, Persana AI connects smoothly with popular CRMs including:

• Salesforce

• HubSpot

• Pipedrive

• Zoho CRM

• 
  

Persana AI pricing and plans

Persana AI offers a tiered pricing structure that accommodates various team sizes:

• Starter: $68/month per user (includes 100 credits)

• Professional: $151/month per user (includes 300 credits and advanced filtering)

• Enterprise: Custom pricing (unlimited credits, dedicated support)

Each credit typically equals one contact verification. The platform also offers a 7-day free trial with 25 credits, allowing teams to test functionality before committing.

Pros and cons based on our testing

Pros:

• Exceptional data accuracy compared to similar platforms

• Intuitive interface requiring minimal training

• Responsive customer support with quick resolution times

• Flexible API for custom integrations

Cons:

• Higher per-contact cost than some competitors

• Limited historical data compared to established platforms like ZoomInfo

• Advanced features locked behind higher-tier plans

• Occasional lag when processing large data requests

Overall, Persana AI presents a compelling alternative to Seamless AI, especially for teams prioritizing data accuracy over sheer volume. The platform strikes a nice balance between functionality and usability, though budget-conscious teams might find the credit consumption rate challenging for large-scale prospecting efforts.

2. Apollo.io

Apollo.io stands as one of the most popular Seamless AI alternatives, serving over 500,000 companies as an end-to-end AI sales platform. After extensive testing, I found its comprehensive approach combines lead generation, outreach, and analytics in a single unified system.

Apollo.io Features

Apollo's massive database spans over 275+ million contacts, providing essential access for sales teams targeting specific prospects. The platform's strength lies in its advanced filtering capabilities, allowing searches based on:

• Industry, job title, and location specifics

• Intent data signals for identifying high-potential leads

• Company technographics and growth indicators

The AI capabilities deserve special mention, as Apollo provides AI-assisted email writing, pre-meeting insights, and automatic transcription services. This automation extends to data enrichment, continuously updating your contacts with fresh information.

Apollo.io pricing structure

Apollo offers flexible pricing based on team needs:

• Free Plan: 10,000 credits monthly with limited functionality

• Basic: USD 49.00/month (annual billing) or USD 59.00/month (monthly billing) - includes unlimited email credits, 250 export credits, and basic sequence capabilities

• Professional: USD 79.00/month (annual) or USD 99.00/month (monthly) - adds 1,000 export credits, AI email writing, and advanced analytics

• Organization: USD 119.00/month (annual) or USD 149.00/month (monthly) - includes custom plans, call transcripts, and API access

All paid plans include a 20% discount for annual billing. Additionally, the platform operates on a credit system, with credits refreshing monthly and usage limitations varying by tier.

Apollo.io Pros & cons

Pros:

• Extensive database with advanced filtering options

• Unified platform covering the entire sales cycle

• Strong intent data for identifying ready-to-buy prospects

• Seamless CRM integrations with Salesforce, HubSpot, and others

• Cost-effective compared to enterprise alternatives like ZoomInfo

Cons:

• Export limitations on lower-tier plans restrict scalability

• Data accuracy issues with some contacts being outdated

• Credit-based system can become restrictive for high-volume users

• Learning curve due to feature-rich platform

• Occasional duplicated records when syncing with CRMs

Fundamentally, Apollo serves as a compelling alternative to Seamless AI, particularly for teams seeking an all-in-one solution rather than piecing together multiple specialized tools.

3. ZoomInfo

Among enterprise-grade Seamless AI alternatives, ZoomInfo stands as a powerhouse in the B2B intelligence space. Headquartered in Vancouver, this market leader has built its reputation on an extensive contact database that helps eliminate friction in lead generation processes.

ZoomInfo Features

ZoomInfo's core strength lies in its massive database containing over 321 million contacts, compiled from public records, annual reports, and business websites. Its flagship product, SalesOS, offers advanced search capabilities with filtering options and intent data to identify qualified leads.

• MarketingOS: An all-in-one account-based marketing solution with cross-channel advertising and website engagement tools

• OperationsOS: Handles data management through deduplication, cleaning, and enrichment functionalities

• TalentOS: Provides talent search and candidate outreach capabilities with employer branding tools

Additionally, ZoomInfo recently launched Copilot, an AI assistant that leverages customer data to personalize outreach and alert sales teams to engagement opportunities.

ZoomInfo pricing (Updated for 2025)

ZoomInfo operates on a tiered pricing structure with annual contracts:

• Professional Plan: Starts at $14,995 per year with 5,000 annual bulk credits for up to three users

• Advanced Plan: Starts at $24,995 per year with 10,000 bulk credits plus 1,000 monthly credits per user

• Elite Plan: Starts at $39,995 per year with enhanced customization options and premium support

Notably, ZoomInfo also offers ZoomInfo Lite, a free version with limited functionality (10-25 credits initially, then 10 monthly) for those using supported versions of Microsoft Outlook or Google Apps.

ZoomInfo Pros and cons

Pros:

• Exceptional data breadth with detailed company profiles and organizational charts

• Real-time buying intent signals for identifying high-potential prospects

• Robust integration capabilities with major CRMs and marketing platforms

• Comprehensive intelligence for sales, marketing, and recruitment teams

Cons:

• Significantly higher price point compared to most Seamless AI alternatives

• Complex interface with steep learning curve according to user feedback

• Obnoxious free trial process requiring demo calls with sales representatives

• Credit-based system that can become restrictive for high-volume users

4. Kaspr

For sales teams seeking quick access to verified contact information, Kaspr offers a powerful Chrome extension that transforms LinkedIn prospecting. Whenever you visit a LinkedIn profile, Kaspr instantly extracts emails, phone numbers, and other contact details in seconds.

Kaspr Features

Kaspr stands out through its real-time data verification capabilities, pulling information from over 150 sources to provide access to more than 500 million phone numbers and email addresses. The Chrome extension works directly on LinkedIn profiles, allowing users to:

• Extract contact information from individual profiles, groups, posts, and events

• Save prospects to the Kaspr dashboard with notes and follow-up reminders

• Bulk enrich lead lists by uploading CSVs with LinkedIn URLs

One particularly valuable capability is Kaspr's automated workflow system, which streamlines outreach through three options—LinkedIn, Enrichment, and Integrations. These workflows can auto-feed prospects into platforms like HubSpot, Salesforce, and Pipedrive based on rules you configure.

Kaspr pricing

Kaspr operates on a credit-based system across four pricing tiers:

Free Plan: 5 phone credits, 5 direct email credits, and 10 export credits monthly—perfect for testing data quality.

Starter Plan: USD 49.00 per user monthly (billed annually), including 1,200 phone credits, 60 direct email credits, and 3,000 export credits.

Business Plan: USD 79.00 per user monthly (billed annually), with 2,400 phone and direct email credits plus 12,000 export credits.

Organization Plan: USD 99.00 per user monthly (billed annually), providing 24,000 monthly phone and email credits plus 120,000 export credits.

Kaspr Pros and cons

From my testing, Kaspr excels at speed and accuracy. The extension retrieves contact information instantly, eliminating the tedious process of manual research. Nevertheless, its credit-based system becomes a significant limitation, as even upper-tier plans restrict usage.

Pros

• Real-time data enrichment for accurate contact details.

• Affordable pricing compared to competitors.

Cons

• Limited integrations with major CRMs and sales tools.

• Smaller database than leading alternatives like Seamless.AI.

5. Lead411

Lead411 stands as a veteran in the B2B data landscape, boasting over 20 years of experience in transforming prospects into viable sales pipelines. As another robust Seamless AI alternative, this platform has earned recognition as the #1 ZoomInfo competitor according to G2.

Lead411 Feature

Key capabilities include:

• Search and filtering options for identifying targeted prospects

• Growth intent triggers that signal when companies are expanding or hiring

• Bombora intent data (on annual subscriptions) to identify active buyers

• Chrome extension for seamless access while browsing LinkedIn or company websites

What truly sets Lead411 apart is its unlimited B2B data offering—a rare find among Seamless AI alternatives. The database encompasses more than 450 million global contacts and 20+ million companies, providing extensive coverage for sales outreach.

RocketReach pricing plans

Lead411 offers flexible pricing options tailored to various team sizes:

• Free Trial: 7-day access with 50 exports, verified emails, and direct phone numbers

• Basic Plus Unlimited: USD 99.00 monthly per user with 200 contacts monthly

• Enterprise Limited: Custom pricing with flexible export limits and additional features like API access, website tracking, and dedicated support

Annual subscribers gain access to valuable Bombora intent data, enhancing prospecting efficiency.

Lead411 Pros and cons

From my testing, Lead411 delivers exceptional value, albeit with some limitations. Users consistently praise its comprehensive contact data and easy-to-navigate interface. The platform excels at providing accurate direct dials and mobile numbers—crucial for high-touch sales approaches.

Pros:

• Cost-effective solution for smaller companies

• Triple-verified email accuracy

• Extensive international coverage

• Flexible data access options

Pros:

• Relatively short 7-day free trial

• Higher pricing may challenge startup budgets

• Limited country coverage compared to global alternatives

Essentially, Lead411 offers a compelling balance of data quality and affordability among Seamless AI alternatives, particularly for teams requiring verified contact information without enterprise-level budgets.

6. Hunter.io

Hunter.io emerges as a specialized email discovery platform among Seamless AI alternatives, focusing exclusively on professional email addresses with over 102 million entries in its database.

Hunter.io's Features

The platform centers around three core functionalities. First, the Domain Search allows users to find all email addresses associated with a specific company website, displaying results with names, positions, and departments when publicly available. Second, the Email Finder helps locate specific individuals' contact information by entering their name and company. Finally, the Email Verifier validates addresses through a multi-level process checking format, domain, and mail server responses.

Hunter.io distinguishes itself through its confidence score system, which indicates the likelihood of email deliverability when addresses can't be fully verified. The platform offers various productivity tools, including:

• Chrome and Firefox extensions for finding emails while browsing websites

• Google Sheets add-on for email discovery directly in spreadsheets

• Bulk operations for processing up to 200 emails per domain at once

Additionally, the free Campaigns feature connects to Gmail or Outlook accounts, enabling personalized cold email outreach with tracking capabilities.

Hunter.io pricing structure

Hunter operates on a dual credit system for searches and verifications:

• Free Plan: 25 monthly searches, limited functionality

• Starter: USD 34.00/month (annual) or USD 49.00/month (monthly), 500 searches, 1,000 verifications

• Growth: USD 104.00/month (annual) or USD 149.00/month (monthly), 5,000 searches, 10,000 verifications

• Business: USD 349.00/month (annual), 50,000 searches, 100,000 verifications

Importantly, searches in Domain Search count as one credit per 10 email addresses returned.

Hunter.io Pros and cons

Pros:

• Triple verification process ensuring 96%+ accuracy

• Intuitive interface requiring minimal learning curve

• Detailed contact information including positions and social profiles

• Transparent sourcing showing where email addresses were found

Cons:

• Restrictive credit system even on higher-tier plans

• Limited to professional emails (no Gmail/Yahoo addresses)

• Emails removed from source websites disappear from Hunter's database

• No AI email writing assistant or A/B testing capabilities

7. Lusha

Lusha positions itself as a formidable Seamless AI alternative, focusing primarily on providing accurate B2B contact information through its global database of over 150 million business profiles. This AI-powered platform helps sales teams connect directly with decision-makers at the right time.

Lusha's Features

Lusha's prospecting capabilities center around three core components. First, its powerful search functionality allows filtering prospects using advanced criteria including industry, job title, and even buyer intent. Second, the Lusha Everywhere Chrome extension enables immediate contact discovery while browsing company websites or LinkedIn profiles. Third, its bulk enrichment feature automatically updates contact lists with verified information.

Lusha Pricing

Lusha operates on a credit-based system across four tiers:

• Free: 5 phone numbers and 50 emails monthly for one user

• Pro: $36/month per user (annual billing) with 40 monthly credits

• Premium: $59/month per user (annual billing) with 80 monthly credits

• Scale: Custom pricing with unlimited contacts (subject to fair usage)

Each credit consumption varies by data type—emails cost 1 credit while phone numbers require 10 credits. Subsequently, all plans include basic features like direct phone numbers, email addresses, and the Chrome extension.

Lusha pros and cons

Pros

• High-quality contact data with verified emails and phone numbers.

• Easy-to-use Chrome extension for quick prospecting.

Cons

• Expensive pricing for advanced features and higher limits.

• Limited free plan with restricted credits.

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8. UpLead

UpLead distinguishes itself in the B2B lead generation landscape with its real-time verification process, ensuring 95% data accuracy for all contacts. This Seamless AI alternative prioritizes quality over quantity, making it an attractive option for sales teams tired of bounced emails.

UpLead's Features

UpLead's platform revolves around accessing over 160 million business contacts across 200+ countries. The prospecting tool offers:

• More than 50 advanced search filters including job title, industry, location, and management level

• Real-time email verification before every download

• Technographic data showing what technologies companies currently use

• Chrome extension for finding verified contacts while browsing LinkedIn or company websites

• API access for customized integrations

The platform's data enrichment capabilities add 50+ data points to existing contacts, while the email finder helps locate decision-makers at target companies. In fact, UpLead's accuracy consistently outperforms competitors, with users reporting 80% email reply rates.

UpLead Pricing

UpLead operates on a credit-based system with several tiering options:

• Free Trial: 7-day access with 5 credits

• Essentials: $99/month for 170 credits

• Plus: $199/month for 400 credits

• Professional: Custom pricing with unlimited credits (annual billing only)

Each credit unlocks one contact's information, including email and mobile direct dial. Annual subscriptions receive approximately 25% discount.

UpLead Pros and Cons

Based on user feedback and testing, UpLead offers several advantages:

Pros:

• Exceptional data quality with 95% accuracy guarantee

• User-friendly interface requiring minimal training

• Responsive 24/7 customer support

• Cost-effective at roughly 1/3 the price of leading competitors

Cons:

• Limited international database outside the US

• Occasional incomplete information for some contacts

• Credit restrictions can limit high-volume prospecting

• Professional plan requires annual commitment

Obviously, UpLead delivers strong value, primarily for teams prioritizing data quality in their outreach efforts.

9. Clearbit

Recently acquired by HubSpot, Clearbit has evolved its focus from providing email addresses and company phone numbers to specializing in data enrichment and website visitor tracking, positioning it uniquely among Seamless AI alternatives.

Clearbit's Features

Clearbit offers five distinct product offerings that form its data activation platform:

• Advertising: For targeted B2B campaigns

• Reveal: Identifies anonymous website visitors using IP intelligence

• Enrichment: Adds 100+ B2B attributes to your databases

• Prospector: Finds new leads matching your criteria

• Alerts: Notifies teams of buying signals

What makes Clearbit stand out is its comprehensive dataset comprising 100+ firmographic and technographic attributes distilled from 250+ data sources. The platform automatically refreshes records when changes are detected, ensuring data remains current. Meanwhile, its millisecond API response times enable seamless integration into existing workflows.

Clearbit Pricing

Clearbit operates on a credit-based system with volume-based pricing. Their most basic enrichment API package starts at $99/month for 275 data enrichment requests. Importantly, Clearbit charges per request regardless of whether the call is successful.

A free option is available with 25 credits per month that refresh at midnight (UTC), although unused credits don't carry over. For enterprise needs, pricing starts at $20,000 annually.

Clearbit Pros and cons

Pros:

• Exceptional integration options with sales and marketing platforms

• Fast API response times for real-time data enrichment

• Reduced form friction through dynamic form shortening

• Highly reliable data enrichment capabilities

Cons:

• Credit-based system restricts viewing and exporting data

• Some users report data being 2-3 years outdated

• Limited EMEA (Europe, Middle East, Africa) enrichment capabilities

• Not all contacts match even at Clearbit-known accounts

As a result, Clearbit works best for marketing teams seeking database enrichment rather than individual prospecting. The platform excels at identifying company visitor intent and enhancing existing records rather than building prospecting lists from scratch.

10. LeadIQ

In the competitive landscape of lead generation tools, LeadIQ positions itself as a workflow optimization platform that streamlines prospecting through verified data and intelligent integrations.

LeadIQ Features

LeadIQ centralizes its value proposition around accelerating pipeline generation with reliable B2B contact data and efficient workflows. The platform's Chrome extension enables users to capture prospect information directly from LinkedIn Sales Navigator and instantly sync it to CRMs and sales engagement tools. Furthermore, LeadIQ offers AI-powered email generation through its Scribe feature, creating personalized messages for any prospect within seconds.

What makes LeadIQ distinctive among Seamless AI alternatives is its emphasis on contact tracking and job change signals. The platform actively monitors key accounts, alerting teams when prospects change roles or companies. Consequently, sales teams can maintain relationships with champions even as they move between organizations.

LeadIQ pricing structure

LeadIQ offers four distinct pricing tiers:

• Free: 50 verified emails and 5 mobile numbers monthly, plus 40 AI email generations

• Essential: USD 36.00/month per user (annual billing) with 1,000 emails and 50 mobile numbers

• Pro: USD 79.00/month per user with 2,000 emails and 100 mobile numbers

• Enterprise: Custom pricing with 10,000 monthly emails per user

Each plan includes account tracking capabilities, with higher tiers offering expanded limits and additional features.

LeadIQ Pros & Cons

Based on extensive user feedback, LeadIQ excels at streamlining the prospecting process. Users consistently praise:

Pros

• Accurate data with verified emails and direct dials.

• Seamless CRM integration with Salesforce, HubSpot, and more.

Cons

• Limited free plan with restricted lead access.

• Higher pricing compared to some alternatives.

Tips for choosing a quality Seamless.AI competitor

Selecting the right Seamless.AI alternative requires careful evaluation of several critical factors that align with your business objectives. After testing numerous platforms, I've identified the key considerations that truly matter when making this important decision.

Firstly, verify the data accuracy of any potential tool. Some alternatives offer better data coverage and features at higher price points, whereas others provide more affordable options that might lack essential capabilities. Examine if the platform updates their database regularly and how they verify contact information.

Beyond that, consider your specific prospecting needs. Perhaps mobile numbers or GDPR-compliant contact data are crucial for your workflow, yet not all Seamless.AI alternatives supply these features. Similarly, some tools offer insights into buyer intent, while others simply provide basic contact information.

The pricing structure deserves careful attention as well. Many vendors operate on credit systems with limits on all but their most expensive plans. Examine whether the price point matches your budget and if the platform offers the scale you need regarding monthly lookups.

Conclusion

After testing these Seamless AI alternatives extensively, my research shows each platform offers unique advantages.

Budget-conscious teams should consider Apollo.io or Lead411, offering comprehensive features at more accessible price points. Teams needing specialized capabilities might find Persana enrichment tools or LeadIQ's workflow automation more suitable for their needs.

My testing revealed Persana AI delivers exceptional value through its balanced combination of accurate data, intuitive interface, and responsive support. Therefore, sales teams should evaluate their specific requirements, available budget, and desired features before choosing their ideal platform.

FAQ

Which Seamless.AI competitor is the best?

The best Seamless.AI competitor depends entirely on your specific business needs. For teams prioritizing data accuracy, Persana AI stands out with its 95% accuracy guarantee and enterprise-level requirements.

Is Seamless.AI better than Lusha?

Seamless.AI provides more accurate and complete information than Lusha. While Lusha relies heavily on public databases with community contributions for validation, Seamless.AI uses artificial intelligence to research and verify data in real-time.

Is Seamless.AI better than ZoomInfo?

According to user reports, Seamless.AI offers superior real-time data updates compared to ZoomInfo, which sometimes contains outdated information. ZoomInfo has faced criticism for limited search capabilities and poor customer service.

How much does seamless AI cost?

Seamless.AI offers four pricing tiers: Free, Basic, Pro, and Enterprise. The Free plan provides 50 credits, while the Basic package starts at $147 per month when billed annually. For businesses with over 1,000 employees, pricing can reach approximately $91,900 monthly.