Clay vs Apollo.io (2026)

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Weighing a third option?

Not sure either one fits?

We're PipeRocket, a B2B SaaS specialist. If you want an outside read on which way to go, we'll give you an honest one.

The short answer

Clay and Apollo.io both show up in modern GTM data stacks, and plenty of teams run both at once (Clay even lists Apollo as one of its own data sources). Clay is an AI-powered data enrichment and workflow automation platform: it doesn’t own a first-party contact database, and instead orchestrates 100+ external providers in a “waterfall” sequence, plus an AI research agent (Claygent) for custom, per-lead research, priced on usage (actions and data credits) with unlimited seats on every plan. Apollo.io is an all-in-one sales intelligence and engagement platform: a large first-party contact and company database bundled with multi-step sequencing, a built-in dialer, and native CRM sync, priced per seat. The honest split is build-your-own data orchestration versus a ready-made prospecting and outreach suite.

Choose Clay Custom enrichment workflows across many data sources

If you want to build custom, no-code enrichment and research workflows pulling from 100+ data providers (including Apollo), need an AI agent (Claygent) for per-lead research beyond what any single database offers, and are comfortable with usage-based, credit-metered pricing, Clay is the stronger fit (Free tier available; Launch reported from ~$167/mo as of July 2026).

Choose Apollo.io Ready-made prospecting, sequencing, and dialer in one tool

If you want a first-party contact and company database plus built-in email sequencing, a dialer, and native CRM sync in one interface without building custom workflows, and prefer transparent per-seat pricing, Apollo.io is the more accessible pick (Free tier; Basic ~$49/user/mo, Professional ~$79/user/mo, billed annually).

At a glance

	Clay	Apollo.io
Founded / Vendor	Clay (clay.com)	Apollo.io (apollo.io)
Category	AI data enrichment + GTM workflow automation	All-in-one prospecting + engagement platform
Starting price	$0 (Free tier); Launch reported ~$167/mo	$0 (Free tier); Basic ~$49/user/mo (annual)
Public rating	~4.7 to 4.9 G2 (split listings, unverified live); 4.7 Capterra (10 reviews)	~4.7 G2 (~9,300+ reviews, unverified live); 2.9 Trustpilot
Best for	Teams building custom, multi-source enrichment and research workflows	Teams wanting an all-in-one prospecting, sequencing, and dialer suite

Vendor profile

Clay

AI data enrichment + workflow automation platform · web app · usage-based pricing, free tier

Clay is a New York based AI-powered data enrichment and GTM workflow automation platform, founded in 2017 by Kareem Amin (CEO) and Varun Anand (COO, joined 2021). Its core mechanic is “waterfall enrichment”: for any data point, Clay queries more than 100 external providers in sequence, including Apollo itself, until it finds a match, then layers on an AI research agent (Claygent) for custom, prompt-driven research per row inside a spreadsheet-style, no-code workflow builder. The company has raised more than $210M, including a $100M Series C in June 2025, with a reported $5B valuation from a January 2026 tender offer, reflecting fast recent momentum. Reported employee counts vary widely across aggregators (roughly 300 to over 1,100), a gap large enough to flag as unverified rather than resolve; treat Clay as a high-growth company of several hundred to low-thousands of employees. Clay states more than 2,500 customers, with named, verifiable logos including Anthropic, Notion, Intercom, Vanta, and Verkada.

Vendor: Clay (clay.com)
Platform: Web app (SaaS)
Category: AI data enrichment + GTM workflow automation
Pricing model: Usage-based (actions + data credits); unlimited seats; free tier
Starting price: $0 (Free); Launch reported ~$167/mo billed monthly (Clay pricing page, July 2026)
Public rating: ~4.7 to 4.9/5 G2 (split listings, unverified live); 4.7/5 Capterra (10 reviews, non-statistical)

Apollo.io

All-in-one prospecting + engagement platform · web app · per-seat pricing, free tier

Apollo.io is a San Francisco based all-in-one sales intelligence and engagement platform. It launched in 2015 as ZenProspect (founders Tim Zheng, Ray Li, and Roy Chung), graduated Y Combinator in 2016, and rebranded to Apollo.io in 2018. Unlike Clay, Apollo owns a large first-party contact and company database and pairs it with multichannel sequencing (email plus a built-in dialer), native bi-directional CRM sync, and an in-app AI assistant. The company has raised roughly $251M from investors including Sequoia, Bain Capital Ventures, and Y Combinator, reaching a reported $1.6B valuation on an estimated $150M to $200M in ARR. Apollo employs roughly 800 to 900 people, most commonly cited at 850. Verifiable customer case studies include Cyera, Instabug, Autodesk, Smartling, Customer.io, Ashby, and Kinsta.

Vendor: Apollo.io (apollo.io)
Platform: Web app (SaaS)
Category: All-in-one prospecting + engagement platform
Pricing model: Per-seat tiered; free tier; annual or monthly
Starting price: $0 (Free); Basic ~$49/user/mo (annual)
Public rating: ~4.7/5 G2 (~9,300 to 9,600 reviews, unverified live); 2.9/5 Trustpilot

Pricing: what you'll actually pay

The two vendors price on fundamentally different axes. Clay charges for usage (actions and data credits) with unlimited seats; Apollo charges per seat regardless of usage. Clay figures come from Clay’s own pricing page (verified live); Apollo figures are drawn from third-party pricing trackers, since Apollo’s own pricing page did not return a parseable tier table via automated fetch. Verify both live before buying.

	Clay	Apollo.io
Starting price	$0 (Free: 500 actions/mo, 100 data credits/mo)	$0 (Free: 900 credits/seat/yr, 2 sequences)
Entry paid tier	Launch, reported ~$167/mo billed monthly as of July 2026 (annual-equivalent figures vary by usage block)	Basic ~~$49/user/mo billed annually (~~$59/mo monthly)
Mid tier	Growth, reported ~$446/mo (40,000 actions/mo, 6,000 data credits/mo, CRM auto-sync)	Professional ~~$79/user/mo billed annually (~~$99/mo monthly)
Full-capability tier	Enterprise, custom pricing (200,000+ actions/mo, SSO, RBAC, dedicated strategist)	Organization ~$119/user/mo billed annually (3-seat minimum, SSO)
Pricing structure	Usage-based (actions + data credits); unlimited seats on every plan	Per-seat; cost scales with headcount, not usage
Example team cost	Growth tier ~~$446/mo (~~$5,352/yr) covers a whole team regardless of seat count, capped at 40,000 actions/mo	A 5-seat Professional team runs ~~$4,740/yr (~~$79/user/mo x 5 x 12), reported
Overages / rollover	Data credits from $0.05 each; unused actions do not roll over; data credits roll over up to 2x monthly (Launch/Growth) or 15% annually (Enterprise)	Credit overages ~$0.20/credit, 250-credit minimum purchase; no rollover; Fair Use Policy caps ‘unlimited’ usage

Capability comparison

The two tools solve adjacent but different problems. Clay leads on data breadth (via orchestration, not ownership) and custom AI-driven research workflows; Apollo leads on owning a first-party database and bundling outbound execution (sequencing, dialer, CRM sync) into one ready-made tool. Several rows below cut against each vendor and are reported as-is.

Service	Clay	Apollo.io
Waterfall enrichment across 100+ providers	✓ (core mechanic, incl. Apollo as one source)	✕ (single first-party source only)
Owns first-party contact/company database	✕ (orchestrates third-party sources)	✓ (own database is the core asset)
AI research agent for custom per-lead work	✓ (Claygent)	Partial (AI assistant / deal insights, not per-row custom research)
No-code, spreadsheet-style workflow builder	✓	✕
Built-in outbound sequencing	✓ (Clay Sequencer)	✓ (multi-step, A/B tests, reply detection)
Built-in dialer / call coaching	✕	✓ (Pro+ tiers; recording, transcription)
Native, bi-directional CRM sync	Partial (Growth tier+)	✓ (Salesforce, HubSpot, Pipedrive, Zoho)
Signal monitoring (job changes, intent, etc.)	✓	✓ (job-change, hiring, funding, technographic)
SSO / RBAC	✓ (Enterprise tier)	✓ (Organization tier)
Free tier	✓ (500 actions/mo, 100 data credits/mo)	✓ (900 credits/seat/yr, 2 sequences)
Unlimited seats on every plan	✓	✕ (cost scales per seat)

Decision matrix - who fits which side

Criterion	Clay	Apollo.io
Need waterfall enrichment across 100+ data providers	✓	✕
Want a single first-party database as source of truth	✕	✓
Need a custom AI research agent for per-lead workflows	✓	-
Want a built-in dialer and call coaching	✕	✓
Comfortable building no-code workflows or spreadsheet logic	✓	-
Want an all-in-one tool with no workflow-building required	✕	✓
Need native, bi-directional CRM sync out of the box	-	✓
Want predictable per-seat pricing at entry	✕	✓
Need the deepest, most verifiable review pool to de-risk buying	✕	✓
Want unlimited seats regardless of team size	✓	✕

Check = clear edge. Dash = capable but not the stronger pick. Cross = outside the model.

Strengths & tradeoffs

Both tools show up in modern GTM stacks, often together, and each wins rows the other does not. The honest differences are data ownership, workflow flexibility, and how outbound execution actually happens.

Axis	Clay	Apollo.io
Scope	Data enrichment and workflow automation layer; not a ready-made outbound suite	All-in-one: database, sequencing, dialer, and CRM sync in one tool
Data model	Orchestrates 100+ third-party providers (including Apollo) via waterfall; no first-party database of its own	Owns a large first-party contact and company database
AI / automation	Claygent AI research agent plus a spreadsheet-style, no-code workflow builder for custom logic	In-app AI assistant and deal insights; not built for custom, per-row research workflows
Outbound execution	Clay Sequencer for outbound sequencing; no built-in dialer	Multi-step email sequencing plus a built-in dialer with recording and coaching
Learning curve	Steeper; several third-party reviews describe real ramp-up time before a team sees ROI	Lower; ready-made database and workflows out of the box
Pricing model	Usage-based (actions + data credits), unlimited seats; reviewers call the credit system unpredictable at scale, with no action rollover	Per-seat tiers; transparent headline price, but real team cost is understated (a 5-seat Professional team runs ~$4,740/yr, not $79/mo)
Integrations	100+ integrations including Salesforce, HubSpot, Clearbit, Apollo, Hunter, People Data Labs, OpenAI/Claude, Google Sheets, Crunchbase	Native bi-directional sync with Salesforce, HubSpot, Pipedrive, Zoho; one-way to Outreach and SalesLoft; Zapier bridge to 7,000+ apps
Public proof	G2 rating fragmented across duplicate or split listings (reported ~4.7 to 4.9); Capterra 4.7/5 but only 10 reviews	G2 reports ~4.7/5 across roughly 9,300+ reviews, a statistically meaningful sample, though Trustpilot sits far lower at 2.9/5

Ratings & track record

Metric	Clay	Apollo.io
G2 rating	~4.7 to 4.9/5 (split/duplicate listings; not independently confirmed live, G2 returned 403)	~4.7/5 (not independently confirmed live, G2 returned 403)
G2 reviews	~312 on one listing; far fewer on a second, differently-slugged listing	~9,300 to 9,600 (source-dependent)
Capterra rating	4.7/5 (10 reviews, non-statistical)	Profile exists; rating/count not independently confirmed
Trustpilot	No Trustpilot data found in this research pass	2.9/5, notably lower than G2, driven by billing disputes and support complaints on lower and free tiers
Category	AI data enrichment + workflow automation	All-in-one prospecting + engagement
Notable signal	Fast recent funding momentum ($100M Series C, reported $5B valuation, Jan 2026); reviews praise waterfall enrichment but flag pricing unpredictability	Largest, most statistically meaningful review pool in the category; a real reputational gap between its G2 and Trustpilot scores

Clay’s social proof is genuinely harder to sanity-check than Apollo’s. Its G2 presence appears split across duplicate or differently-slugged product listings, with reported ratings ranging from roughly 4.7 to 4.9 and review counts that vary sharply by listing, none of it independently confirmed via a direct fetch (G2 returned a 403 to automated fetchers on both products). Its Capterra rating is a clean 4.7/5, but on only 10 reviews, too small a sample to treat as statistical. Apollo’s G2 rating is reported around 4.7/5 across roughly 9,300 to 9,600 reviews, one of the largest pools in the category and a meaningful sample size, though also not independently re-confirmed live. Apollo’s Trustpilot score (2.9/5) is a different, harsher audience than G2, and is driven largely by billing disputes and account or support complaints concentrated on lower and free tiers rather than the core prospecting workflow. Confirm both companies’ current ratings directly on G2, Capterra, and Trustpilot before treating either number as decisive.

Both tools’ data is sourced from publicly available information and third-party cross-checks as of July 2026. Clay’s and Apollo’s G2 profiles could not be confirmed via direct automated fetch (both returned 403), and several Apollo pricing figures come from third-party trackers rather than a parsed apollo.io/pricing page; treat all flagged numbers as reported and verify directly with each vendor before buying. This comparison is independent; we take no affiliate or referral fees from either vendor.

Frequently asked questions

What is the difference between Clay and Apollo.io?

Clay is an AI-powered data enrichment and workflow automation platform. It doesn’t own a contact database; instead it orchestrates 100+ external data providers (including Apollo) in a “waterfall” and adds an AI research agent (Claygent) for custom, per-lead research, all inside a no-code workflow builder priced on usage. Apollo.io is an all-in-one sales intelligence and engagement platform with its own first-party contact and company database, bundled with sequencing, a built-in dialer, and native CRM sync, priced per seat. Clay builds and enriches custom workflows; Apollo executes ready-made outbound out of the box.

Is Clay better than Apollo.io?

Neither is better in the abstract; they solve different problems. Clay is better for teams that want to build custom enrichment and research workflows across many data sources and are comfortable with a learning curve and usage-based pricing. Apollo is better for teams that want a ready-made database plus sequencing and dialer in one tool without building anything custom, and prefer predictable per-seat pricing. Many teams use Clay to enrich and research leads, then push them into Apollo (or another tool) to execute outbound.

Which is cheaper, Clay or Apollo.io?

It depends on usage, not just headline price. Clay’s Growth tier is reported around $446/mo and covers an entire team regardless of seat count (unlimited seats on every plan), but is capped at 40,000 actions/mo and its credit system can get unpredictable at scale, according to reviewer commentary. Apollo’s Professional tier is reported around $79/user/mo, so a 5-seat team runs closer to $4,740/yr, a real cost the $79 headline number understates. Small teams doing light enrichment often land cheaper on Clay; larger seat counts doing heavy end-to-end outbound often land cheaper on Apollo. Verify both live before budgeting.

Can you use Clay and Apollo.io together?

Yes, and it’s a common pairing. Clay lists Apollo as one of its 100+ integrations and can pull Apollo data into a waterfall enrichment alongside dozens of other providers, then hand enriched, researched leads to Apollo (or another outbound tool) for sequencing and dialing. The two aren’t mutually exclusive; Clay is enrichment and research infrastructure, while Apollo is a database plus execution suite.

Does Clay have its own contact database?

No. Clay has no first-party contact or company database of its own at the scale of Apollo’s. Its value comes from orchestrating 100+ third-party data providers, including Apollo itself, in a waterfall sequence per data point, rather than owning primary data. This is the single biggest structural difference between the two tools.

Which has better reviews, Clay or Apollo.io?

This is genuinely hard to pin down for Clay. Its G2 presence is split across duplicate or differently-slugged product listings (reported figures range roughly 4.7 to 4.9/5, with review counts as low as several hundred on one listing), and neither number could be independently confirmed via a direct G2 fetch. Its Capterra rating (4.7/5) is based on only 10 reviews, too small to be statistical. Apollo’s G2 rating (reported ~4.7/5 across roughly 9,300 to 9,600 reviews) is a far larger, more statistically meaningful sample, though also not independently re-confirmed live, and its Trustpilot score (2.9/5) sits notably lower, driven by billing and support complaints on lower and free tiers. Confirm both live before treating either number as a clean signal.

Sources and references

Clay homepage (accessed July 2026)
Clay pricing (accessed July 2026)
Clay customer stories (accessed July 2026)
Clay customer story: Anthropic (quote) (accessed July 2026)
Clay funding / dossier (accessed July 2026)
Clay reviews (G2, verify live) (accessed July 2026)
Clay reviews (Capterra, 10 reviews) (accessed July 2026)
Clay company profile (Built In NYC) (accessed July 2026)
Clay team size estimate (LeadIQ) (accessed July 2026)
Clay integrations (accessed July 2026)
Apollo.io homepage (accessed July 2026)
Apollo.io reviews (G2, verify live) (accessed July 2026)
Apollo.io reviews (Trustpilot) (accessed July 2026)
Apollo.io reviews (Capterra) (accessed July 2026)
Apollo.io customer story: Cyera (quote) (accessed July 2026)
Apollo.io customer story: Instabug (quote) (accessed July 2026)
Apollo.io pricing guide (PhantomBuster) (accessed July 2026)
Apollo.io company profile (Built In SF) (accessed July 2026)
Apollo.io funding / revenue estimate (Latka) (accessed July 2026)

Written by Vishnu Prasadh PPC Manager at PipeRocket

Vishnu is a paid marketing manager focused on building high-ROI acquisition engines for B2B SaaS companies. Playing a key role in building PipeRocket Digital, he designs and scales paid media programs across Google, LinkedIn, and other performance channels — turning ad spend into qualified pipeline. With a revenue-first approach to every campaign, Vishnu helps SaaS brands move beyond vanity metrics and drive growth that actually closes.

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Reviewed by Praveen Ravi Co-Founder, PipeRocket Digital

Praveen is a performance-driven marketing leader with over a decade of experience in paid acquisition and demand generation for B2B SaaS companies. As Co-Founder of PipeRocket Digital, he specializes in building high-ROI paid media strategies, scaling pipeline through data-driven experimentation, and aligning marketing efforts directly with revenue outcomes.

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