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Apollo.io vs Close

A detailed comparison of Apollo.io and Close. Find out which AI SDR solution is right for your team.

📌Key Takeaways

  • 1Apollo.io vs Close: Comparing 6 criteria.
  • 2Apollo.io wins 4 categories, Close wins 2, with 0 ties.
  • 3Apollo.io: 4.5/5 rating. Close: 4.3/5 rating.
  • 4Overall recommendation: Apollo.io edges ahead in this comparison.
Option A

Apollo.io

4.5

End-to-end B2B sales intelligence and engagement platform with 265M+ contacts, AI-powered research, and multi-channel outreach automation

4 wins
View full review →
Option B

Close

4.3

Sales CRM built for SMBs with built-in calling, email, and SMS automation plus AI-powered features for high-velocity sales

2 wins
View full review →

4

Apollo.io wins

0

Ties

2

Close wins

Feature Comparison

CriteriaApollo.ioCloseWinner
Email Deliverability45Close
Personalization53Apollo.io
Automation Level53Apollo.io
CRM Integration34Close
Ease of Use53Apollo.io
Multi-channel Support53Apollo.io

Detailed Analysis

Email Deliverability

Close

Apollo.io

Apollo.io's email deliverability capabilities

Close

Close's email deliverability capabilities

Comparing email deliverability between Apollo.io and Close.

Personalization

Apollo.io

Apollo.io

Apollo.io's personalization capabilities

Close

Close's personalization capabilities

Comparing personalization between Apollo.io and Close.

Automation Level

Apollo.io

Apollo.io

Apollo.io's automation level capabilities

Close

Close's automation level capabilities

Comparing automation level between Apollo.io and Close.

CRM Integration

Close

Apollo.io

Apollo.io's crm integration capabilities

Close

Close's crm integration capabilities

Comparing crm integration between Apollo.io and Close.

Ease of Use

Apollo.io

Apollo.io

Apollo.io's ease of use capabilities

Close

Close's ease of use capabilities

Comparing ease of use between Apollo.io and Close.

Multi-channel Support

Apollo.io

Apollo.io

Apollo.io's multi-channel support capabilities

Close

Close's multi-channel support capabilities

Comparing multi-channel support between Apollo.io and Close.

Feature-by-Feature Breakdown

Massive AI‑enhanced contact database

Close

Apollo.io

Provides access to over 270 million verified contacts and 30 million companies, continuously enriched by AI algorithms that validate emails, phone numbers, and firmographic data, ensuring high‑quality prospect lists for outbound campaigns. Higher lead accuracy reduces bounce rates and improves conversion.

Higher lead accuracy reduces bounce rates and improves conversion

Close

Close's AI calling feature revolutionizes outbound prospecting by conducting autonomous phone conversations with prospects using advanced natural language processing. The system dials through prospect lists, engages in natural dialogue, handles common objections with trained responses, and qualifies leads based on your specific criteria—all without human intervention. Every call is automatically transcribed in real-time, with key information like budget, timeline, and decision-maker status extracted and logged directly to the CRM. This enables sales teams to scale their outreach to hundreds of prospects daily while ensuring human reps only spend time on pre-qualified opportunities. Scale prospecting 24/7 without hiring additional SDRs while ensuring reps only engage with pre-qualified leads.

Scale prospecting 24/7 without hiring additional SDRs while ensuring reps only engage with pre-qualified leads

Both Apollo.io and Close offer Massive AI‑enhanced contact database. Apollo.io's approach focuses on provides access to over 270 million verified contacts and 30 million companies, continuously enriched by ai algorithms that validate emails, phone numbers, and firmographic data, ensuring high‑quality prospect lists for outbound campaigns., while Close emphasizes close's ai calling feature revolutionizes outbound prospecting by conducting autonomous phone conversations with prospects using advanced natural language processing.. Choose based on which implementation better fits your workflow.

Multi‑channel sequence automation

Close

Apollo.io

Allows users to create email, phone, LinkedIn, and social media sequences with conditional triggers, A/B testing, and automated follow‑ups, all managed from a single dashboard. Saves time and ensures consistent outreach cadence.

Saves time and ensures consistent outreach cadence

Close

Close's machine learning-powered lead scoring system analyzes hundreds of data points including prospect engagement patterns, company demographics, industry signals, and historical interaction data to predict conversion likelihood with remarkable accuracy. The system continuously learns from your actual deal outcomes, adapting its scoring models to reflect your specific sales patterns and ideal customer profile. Leads are automatically ranked and prioritized, with transparent scoring explanations that help reps understand why certain prospects are flagged as high-value. This eliminates guesswork from prospecting and ensures your team focuses energy on opportunities most likely to close. Identify high-probability opportunities before they're contacted and continuously improve targeting based on actual results.

Identify high-probability opportunities before they're contacted and continuously improve targeting based on actual results

Both Apollo.io and Close offer Multi‑channel sequence automation. Apollo.io's approach focuses on allows users to create email, phone, linkedin, and social media sequences with conditional triggers, a/b testing, and automated follow‑ups, all managed from a single dashboard., while Close emphasizes close's machine learning-powered lead scoring system analyzes hundreds of data points including prospect engagement patterns, company demographics, industry signals, and historical interaction data to predict conversion likelihood with remarkable accuracy.. Choose based on which implementation better fits your workflow.

Integrated CRM and data enrichment

Close

Apollo.io

Bidirectional sync with Salesforce, HubSpot, Microsoft Dynamics, Pipedrive and others, plus real‑time enrichment that updates contact records with new job changes, intent signals, and company data. Eliminates duplicate data entry and keeps the sales pipeline up‑to‑date.

Eliminates duplicate data entry and keeps the sales pipeline up‑to‑date

Close

Create sophisticated multi-step email campaigns with AI-optimized subject lines, personalized content, and intelligent send-time optimization based on historical engagement data. Close's sequence engine automatically adjusts the cadence based on prospect behavior—skipping steps when prospects respond, accelerating outreach for engaged leads, or pausing sequences when negative signals are detected. Built-in A/B testing capabilities allow you to experiment with different approaches while comprehensive analytics track open rates, click-through rates, reply rates, and conversion metrics across all campaigns. The system learns from performance data to continuously improve recommendations. Scale personalized outreach while improving engagement rates through AI-driven optimization and behavioral triggers.

Scale personalized outreach while improving engagement rates through AI-driven optimization and behavioral triggers

Both Apollo.io and Close offer Integrated CRM and data enrichment. Apollo.io's approach focuses on bidirectional sync with salesforce, hubspot, microsoft dynamics, pipedrive and others, plus real‑time enrichment that updates contact records with new job changes, intent signals, and company data., while Close emphasizes create sophisticated multi-step email campaigns with ai-optimized subject lines, personalized content, and intelligent send-time optimization based on historical engagement data.. Choose based on which implementation better fits your workflow.

AI Assistant & AI Projects

Close

Apollo.io

AI‑driven assistants generate personalized email copy, recommend next‑best actions, and can be prompted to build targeted prospect lists or trigger workflows, acting as a co‑pilot throughout the sales process. Accelerates content creation and improves relevance of outreach.

Accelerates content creation and improves relevance of outreach

Close

Close eliminates the fragmentation that plagues sales teams by combining contact management, deal tracking, activity logging, and multi-channel communication into a single unified platform. Every email, call, SMS, and task is automatically captured and associated with the appropriate contact record, creating a complete audit trail of all customer interactions accessible to the entire team. Custom fields, configurable pipelines, and flexible workflows can be tailored to match your specific sales process, while role-based permissions ensure appropriate access control. The platform's architecture ensures zero data silos and complete context for every customer interaction. Eliminate context-switching between tools and maintain complete visibility into all customer interactions across your team.

Eliminate context-switching between tools and maintain complete visibility into all customer interactions across your team

Both Apollo.io and Close offer AI Assistant & AI Projects. Apollo.io's approach focuses on ai‑driven assistants generate personalized email copy, recommend next‑best actions, and can be prompted to build targeted prospect lists or trigger workflows, acting as a co‑pilot throughout the sales process., while Close emphasizes close eliminates the fragmentation that plagues sales teams by combining contact management, deal tracking, activity logging, and multi-channel communication into a single unified platform.. Choose based on which implementation better fits your workflow.

Advanced analytics & reporting

Close

Apollo.io

Tracks sequence performance, open/click/reply rates, buyer intent scores, and provides built‑in dashboards for A/B testing, pipeline forecasting, and revenue attribution. Gives sales leaders data‑driven insights to optimize strategies.

Gives sales leaders data‑driven insights to optimize strategies

Close

Close's AI-powered call analytics engine automatically analyzes every phone conversation to extract actionable insights about sales performance. The system measures talk-to-listen ratios, identifies objection patterns, tracks keyword mentions, and predicts call outcomes based on conversation dynamics. Individual rep scorecards compare performance against team benchmarks, highlighting specific coaching opportunities with timestamped examples from actual calls. Managers can quickly identify winning techniques from top performers and replicate them across the team, while struggling reps receive targeted feedback based on concrete data rather than subjective impressions. Transform call recordings into actionable coaching insights that systematically improve team performance and conversion rates.

Transform call recordings into actionable coaching insights that systematically improve team performance and conversion rates

Both Apollo.io and Close offer Advanced analytics & reporting. Apollo.io's approach focuses on tracks sequence performance, open/click/reply rates, buyer intent scores, and provides built‑in dashboards for a/b testing, pipeline forecasting, and revenue attribution., while Close emphasizes close's ai-powered call analytics engine automatically analyzes every phone conversation to extract actionable insights about sales performance.. Choose based on which implementation better fits your workflow.

Strengths & Weaknesses

Apollo.io

Strengths

  • Massive B2B database with 270M+ verified contacts and 30M+ companies, continuously enriched by AI for high data accuracy and low bounce rates.
  • All-in-one platform combines prospecting, sequencing, CRM sync, and analytics - eliminates need for multiple point solutions and reduces tool sprawl.
  • AI-powered email writer and assistant generates personalized outreach at scale, recommends next-best actions, and builds targeted prospect lists from natural language prompts.
  • Bidirectional CRM integration with Salesforce, HubSpot, and others keeps data synchronized in real-time and eliminates duplicate data entry.
  • Flexible pricing with free tier and credit-based model makes enterprise-grade sales intelligence accessible to startups and SMBs.

Weaknesses

  • Credit system can be confusing - mobile numbers cost extra credits, and heavy users may find credit consumption adds up quickly.
  • Data accuracy varies by region - while US/EU contact data is strong, international markets may have less reliable information.
  • Per-user pricing on higher tiers can become expensive for large sales teams compared to flat-rate competitors.
  • Learning curve for advanced features - workflow automation and AI assistant require time to configure optimally.

Close

Strengths

  • AI Voice Calling: Close's AI calling feature revolutionizes outbound prospecting by conducting autonomous phone conversations with prospects using advanced natural lang...
  • Intelligent Lead Scoring: Close's machine learning-powered lead scoring system analyzes hundreds of data points including prospect engagement patterns, company demographics, in...
  • Multi-Channel Email Sequences: Create sophisticated multi-step email campaigns with AI-optimized subject lines, personalized content, and intelligent send-time optimization based on...
  • Unified CRM Platform: Close eliminates the fragmentation that plagues sales teams by combining contact management, deal tracking, activity logging, and multi-channel commun...
  • Real-Time Call Analytics: Close's AI-powered call analytics engine automatically analyzes every phone conversation to extract actionable insights about sales performance. The s...

Weaknesses

  • Learning curve for advanced automation features - optimal configuration may require experimentation and iteration.
  • Data accuracy varies by region - international markets may have less comprehensive or current contact information.
  • AI-generated content requires human review to ensure accuracy and brand voice consistency.

Industry-Specific Fit

IndustryApollo.ioCloseBetter Fit
All IndustriesApollo.io’s flexible data filters, AI‑driven intent detection, and customizable workflows allow any vertical—from SaaS to manufacturing—to build precise prospect lists, automate outreach, and integrate with existing CRMs, making the platform universally applicable.Not specifiedApollo.io
SaaSProvides deep technographic filters and product‑usage intent signals that help SaaS companies target accounts showing trial usage or recent funding, enabling timely outreach and faster customer acquisition.Not specifiedApollo.io
HealthcareOffers compliance‑ready GDPR and HIPAA‑compatible data handling, along with industry‑specific filters for hospital systems and medical device manufacturers, helping sales teams reach decision‑makers while maintaining regulatory standards.Not specifiedApollo.io
Financial ServicesIncludes financial‑industry SIC codes, intent data for regulatory compliance software, and secure data encryption, allowing banks and fintech firms to prospect safely and efficiently.Financial services organizations including insurance agencies, wealth management firms, and lending companies use Close to manage prospect relationships while maintaining compliance with industry regulations. Call recording and complete communication logging support audit requirements, while the platform's security features meet the data protection standards required in financial services. The multi-channel capabilities enable outreach across the channels prospects prefer, and the pipeline management tools help track complex financial products with long consideration cycles.Close
E‑commerceLeverages buying‑intent signals such as recent cart activity or ad spend spikes to identify high‑value merchants, and integrates with e‑commerce platforms for seamless lead capture.Not specifiedApollo.io
ManufacturingProvides extensive SIC code filtering (see source 13) and equipment‑specific contact data, enabling manufacturers to target procurement officers and engineering leads.Not specifiedApollo.io
EducationOffers filters for K‑12, higher‑education, and ed‑tech organizations, plus intent data around curriculum purchases, helping vendors engage administrators and IT directors.Not specifiedApollo.io
Real EstateSupports property‑management and commercial‑real‑estate contact enrichment, allowing brokers to locate owners, investors, and leasing managers with high‑precision targeting.Real estate brokerages and agents use Close to manage buyer and seller relationships through lengthy transaction cycles. The platform's communication tools—particularly calling and SMS—align with the high-touch, responsive communication style that real estate requires. Pipeline visualization helps agents track multiple deals at various stages, while the mobile app enables productivity during property showings and client meetings. Automation features ensure consistent follow-up with leads who may not be ready to transact for months or years.Close

Our Verdict

Apollo.io and Close are both strong AI SDR solutions. Close stands out for massive ai‑enhanced contact database. Choose based on which specific features and approach best fit your workflow and requirements.

Choose Apollo.io if you:

  • You operate in All Industries
  • You prefer Apollo.io's approach to ai sdr
  • You prefer Apollo.io's approach to ai sdr
View Apollo.io

Choose Close if you:

  • You need massive ai‑enhanced contact database capabilities
  • You need multi‑channel sequence automation capabilities
  • You operate in SaaS & Technology
View Close

Need Help Choosing?

Get expert guidance on selecting between Apollo.io and Close for your specific use case.

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Frequently Asked Questions

It depends on your specific needs. Apollo.io and Close each have strengths in different areas. Compare features, integrations, and pricing to determine which is best for your use case.
In some cases, yes. Many teams use complementary tools together. Check if both platforms offer integrations or APIs that allow them to work together.
Both platforms offer different onboarding experiences. Apollo.io and Close each have their own setup processes. Most users can get started with either within a few hours.
The main differences are in their approach, feature set, and target use cases. Review the comparison criteria above to see detailed breakdowns of how they differ.
For small teams, consider factors like ease of use, pricing tiers, and the specific features you need most. Both Apollo.io and Close can work for small teams depending on your priorities.

Sources & Evidence

  • Fully agentic end‑to‑end GTM platform with AI agents that orchestrate prospecting, engagement, and deal execution across the entire sales funnel

    Source: Apollo.io introduced the industry’s first fully agentic GTM platform in Oct 2025, enabling AI assistants to automate list building, outreach sequencing, and deal workflow without manual intervention (source 12).

  • AI-powered lead qualification and automated outreach sequencing that learns from sales interactions to prioritize high-value prospects and automatically adjust engagement strategies in real-time

    Source: Close's AI engine analyzes conversation data and engagement patterns to automatically score leads and recommend next best actions. The platform uses machine learning trained on millions of sales interactions to optimize outreach timing and messaging based on historical conversion data. According to Close's documentation, their AI can identify buying signals from email opens, click patterns, and response sentiment to dynamically reprioritize leads and adjust sequence cadences—enabling sales teams to focus on the most promising opportunities without manual lead scoring or constant pipeline review.

  • Apollo Wins “Best AI‑Powered Sales Solution” in 2025 MarTech Breakthrough Awards

    Source: Apollo News - View source

  • Apollo.io Unveils Industry’s First Fully Agentic End‑to‑End GTM Platform

    Source: Apollo News - View source

  • A complete overview of Apollo AI for 2025 - eesel AI

    Source: eesel.ai - View source

  • Sales Development Representative – Role, Skills & Success Tips

    Source: apollo.io - View source

  • Apollo.io

    Source: knowledge.apollo.io - View source

Last updated: January 30, 2026

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