Apollo

The AI GTM System for Go-to-Market Teams

Sales EngagementSan Francisco, CA501–1,000 employeesFounded 2015

#4 of 59 in Sales Engagement600,000 customers (per apollo.io)60% positive in AI answers

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Visibility score

51%

−2.8% vs last week

Weekly run · Nov 3

Data collected Nov 3, 2026·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run Nov 9, 2026

Apollo ranks #4 of 59 in Sales Engagement with an AI visibility score of 51 (SlateIndex, Nov 3, 2026).
Apollo's visibility fell 2.8 points since the previous weekly run.
Apollo is most visible on ChatGPT (70.6) and least on Google AI Mode (39.1).
AI engines name Apollo in 36 of the 90 Sales Engagement buyer prompts SlateIndex tracks.
apollo.io is the source AI engines cite most in answers about Apollo, with 38 citations.

About

Company details for Apollo

Apollo is a go-to-market platform that combines a B2B database of over 240 million contacts and 30 million accounts with AI agents for research, list building, outreach and meeting booking. Its GTM Harness runs goal-based work across Workspace, Apollo Anywhere and Builder Studio, and the product connects to CRMs and other sales tools. Teams use it for prospecting, outreach, dialing and enrichment. It ranks #4 of 59 in Sales Engagement on SlateIndex and has a visibility score of 51 in the latest weekly run.

Founded in 2015 and headquartered in San Francisco, CA, the company employs 501–1,000 people. It has raised about $250M. Its differentiator: one connected GTM system that combines proprietary B2B data, AI intelligence and execution in a single loop.

Website: apollo.io
Categories: Sales Engagement, Sales Enablement, Email Marketing
Company size: 501–1,000 employees
Headquarters: San Francisco, CA
Founded: 2015
Company type: Private, venture-backed
Funding: Series D · $250M raised
Customers: 600,000 · per apollo.io
Pricing: Contact sales · per seat
Free trial: Free plan available
Deployment: Cloud platform
Integrations: 200+ native
Compliance: GDPR, SOC 2, CCPA, ISO/IEC 27001, CASA Tier 2, CPRA, EU-US DPF, PCI DSS
Support: Email support at support@apollo.io, Dedicated support on Custom plans, Sales team for Custom plan discussions

LinkedIn · linkedin.com/company/apolloio/X · x.com/useapolloio YouTube · youtube.com/c/apolloio Instagram · instagram.com/useapollo.io/Facebook · facebook.com/UseApolloIo

Read from linkedin.com, apollo.io, g2.com, pipeline.zoominfo.com, trueup.io, bouncewatch.com · refreshed Nov 2, 2026.

AI visibility

Latest weekly run · Nov 3 · next run Nov 9

Visibility score

51%

across Sales Engagement answers, weighted by position

ChatGPT70.6%

AI Mode39.1%

Perplexity43.3%

Change

−2.8%

vs last week’s run

Category rank

#4 of 59

in Sales Engagement

Mentions

in this week’s run

Share of voice

9.4%

of AI mentions in Sales Engagement

Visibility score trend

Weekly runs over the last 60 days, with up to 7 competitors. Click a name to hide or show its line.

Now51%

30-day changedown−2.799999999999997pp

High · low53.8% · 51%

Rank#2 → #4

Compare in

Apollo lost 2.8 points over 1 weekly run in Sales Engagement. HubSpot leads the category at 55.6%.

Media

Website and product screenshots for Apollo

All media

Home page

Pricing page

AI mentions & citations

Recent answers that name Apollo

All prompts

Best sales engagement platform for startups

For most early-stage startups, Apollo.io is the best overall sales engagement platform because it combines prospecting, contact data, email sequences, calling, and CRM functionality without requiring an expensive…

ChatGPT · run of Nov 3

Most affordable sales engagement platform that is still reliable

My recommendation: Apollo.io for an all-around sales engagement platform, or Smartlead if your primary goal is affordable cold email outreach.

ChatGPT · run of Nov 3

Which sales engagement platform offers a free trial?

Based on current vendor information, Apollo.io and Reply.io are two strong options.

ChatGPT · run of Nov 3

Is there a free sales engagement platform for small teams?

My recommendation is to start with Apollo.io or HubSpot, depending on whether your priority is outbound prospecting or managing the entire sales process.

ChatGPT · run of Nov 3

Which Sales Engagement tools offer annual discounts?

ChatGPT · run of Nov 3

Where can I sign up for a sales engagement platform?

If you're just starting, I'd look at Apollo.io first because you can create a free account and explore its prospecting and sales engagement features.

ChatGPT · run of Nov 3

Who makes the most used sales engagement platform?

Apollo.io, made by Apollo.io, appears to be the most widely used sales engagement platform by current technology-adoption estimates in 2026.

ChatGPT · run of Nov 3

Most affordable sales engagement platform that is still reliable

Apollo.io — Best Overall Value & All-in-One Data

Google AI Mode · run of Nov 3

Products & features

What Apollo sells

Apollo Data

B2B contact and account data with waterfall enrichment, buying signals and first-party data integration.

GTM Harness

Intelligence engine that holds business context, plans multi-step work and keeps actions reviewable.

Workspace

Workspace for prospecting, outreach and dialing.

Apollo Anywhere

Access to Apollo from a CRM, ChatGPT, Claude, Gmail and the browser.

Builder Studio

Apollo product listed as coming soon on the vendor site.

Apollo Profile

Unified person and company profiles built from CRM, product usage, call recordings and buying signals.

Strengths engines cite

Large B2B contact database combined with prospecting and email sequencing
Transparent self-serve per-user pricing with a free tier
Strong all-in-one value for prospecting and outreach
Affordable, reliable choice for small teams and startups
Widely used and highly rated by reviewers

Target market & buyers

Sales and go-to-market teams, from rapidly growing startups to large global enterprises

Notable customers include Intel, AT&T, Adobe, SAP, Shopify.

Funding & recent developments

Funding

Round	Year	Amount
Seed	2016	—
Series A	2018	$7M
Series B	2021	$32M
Series C	2022	$110M
Series D	2023	$100M

Latest known round	Total raised
Series D	$250M

Recent developments

Sep 2026ProductApolloNEXT unveiled
Apollo unveiled ApolloNEXT, with an Intelligence Layer and Builder Studio.
Sep 2026PartnershipFlagship data partner for Hunter
Apollo was named flagship data partner for Hunter, Salesforce's outbound sales agent.
Aug 2026CompanyChief Product Officer appointed
Mark Sieglock was appointed Chief Product Officer.
Mar 2026CompanyAcquisition of Pocus
Apollo acquired Pocus, a sales-signals startup.
Feb 2026CompanyMatt Curl named CEO
Matt Curl was named CEO, and Tim Zheng continues as chairman.

Competitive landscape

How Apollo compares with its top three alternatives

All alternatives

Apollo most often appears alongside HubSpot, Outreach, Salesloft in AI answers.

vsApollo vs HubSpot51% vs 73.1% visibility · HubSpot leadsFull comparison vsApollo vs Outreach51% vs 55.1% visibility · Outreach leadsFull comparison vsApollo vs Salesloft51% vs 51.2% visibility · Salesloft leadsFull comparison

Brand	Visibility	Share of voice	vs last week	Starting price
Apollo	51%	9.4%	down−2.8%	Free plan
HubSpot	73.1%	13.1%	New	Free plan
Outreach	55.1%	10.1%	down−20.3%	Contact sales
Salesloft	51.2%	10.1%	up+1.4%	Pricing not available
Salesforce	46.2%	9.6%	New	Pricing not available