Company profile
Apollo
Live profile
Who is Apollo.io? Founded in 2015, Apollo is a leading data intelligence and sales engagement platform trusted by 40,000 paying customers, from rapidly ...
2015
1001-5000
Series D ($100M)
Cloudflare
3.0/5 · 1.2k reviews
Software Company
AI Classification
Apollo.io is an AI-powered B2B sales platform offering a 230M+ contact database, outbound/inbound automation, data enrichment, and deal execution tools in one unified product. It serves over 600,000 companies globally, positioning itself as a full-stack replacement for fragmented sales tech stacks.
Deep Intelligence
Account Scoring
- Series D — mature / stable
- Thin digital footprint
- 1206 reviews — entrenched
Tech Stack
CDN
Similar Companies
Social Links
Apollo is one of 2,673 B2B companies in the Kustiq directory.
Apollo sits among 219 martech vendor companies in our MarTech directory.
Similar profiles: Gainsight, Derrick, Activecampaign, and Bonterratech.
Both sit in the 1001-5000 headcount band, and both are at Series D. See Apollo vs Gainsight side by side.
Derrick sits in the 1-10 headcount band while Apollo is at 1001-5000. See Apollo vs Derrick side by side.
Both sit in the 1001-5000 headcount band. See Apollo vs Activecampaign side by side.
How Apollo compares with other MarTech Vendor companies
Apollo is one of 219 MarTech Vendor companies profiled in the Kustiq MarTech directory, which holds 311 MarTech companies in total. Every number below is computed from those profiles.
Apollo sits in the 1001-5000 headcount band. 91% of the 159 segment peers with a known team size are smaller. 8% of those peers share the same band.
The most common tech detections across the 79 peers with a visible stack are Cloudflare (53%), Google Analytics (19%), and WordPress (16%). Apollo runs Cloudflare.
Among the 87 segment companies with disclosed funding, Growth is the most common stage (70%). Apollo is at Series D.
The median founding year across 54 peers with a known founding date is 2014. Apollo was founded in 2015.
London is the most common HQ city in this segment, home to 7% of the 44 peers with a known location.
Benchmarks are recomputed from live directory data, so they move as profiles refresh. Counts cover Kustiq-profiled companies, not the whole market.
Sizing up Apollo?
Apollo is a sequencer with a DB. Kustiq is intelligence-first with $0.60 verified prospects and built-in ICP scoring. See the side-by-side: pricing, feature gaps, and when Apollo is still the right call.
How this profile was built
- Live web rendering via Browserless headless Chrome, not a stale cached scrape.
- Search intelligence via Serper API across the company site, LinkedIn, press, and GitHub.
- Claude only picks the buckets. It never decides facts.
- 12-factor churn engine. Deterministic score, zero LLM at scoring time.
- SMTP RCPT TO handshake on every contact, at delivery time on full profiles (paid plan).
This profile was built from 1 rendered page of apollo.io, search coverage across the live web, and a review parse of 1,206 ratings on .
Read the full methodology in our LLM-readable reference or compare against the deterministic-vs-AI framework.
Frequently asked questions
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