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FullEnrich vs AI Ark · which job is actually stuck?
You're here because FullEnrich and AI Ark keep getting pitched as rivals. They aren't. FullEnrich is a managed multi-provider cascade for email and mobile resolve. It doesn't own a first-party list-build engine. AI Ark is database plus lookalike and semantic list-build with cheap enrich. It is not a 20-plus vendor waterfall (try several data providers in order until one finds a match). This page settles which job is your bottleneck, and whether you should buy one, the other, or stack both.
who wins
Who wins
Default FullEnrich if the list already exists and hard email or mobile resolve is the job. Default AI Ark if volume TAM, lookalike, or cheap first-pass is the job. Most production teams stack both.
- FullEnrich wins when you already have the list and need hard email gaps or EU and US mobiles.
- AI Ark wins when the stuck job is lookalike or semantic TAM build plus cheap first-pass enrich.
- Mobile coverage and dollars per found trade off hard. On one agency set FullEnrich hit about 96% EU and 98% US mobile versus AI Ark at about 11% and 48%, while AI Ark landed near $0.05 versus FullEnrich near $0.55 per found mobile at list prices.
- AI Ark is not a managed 20-plus waterfall. FullEnrich is not a list-build engine.
- Gate FullEnrich spend. Mobile is 10 credits, about $0.55 at the $55 per 1K pack. Miss costs $0, but dial-heavy volume burns fast.
- The production pattern is AI Ark or Sales Nav as source, FullEnrich for hard gaps, then Clay logic if needed.
- A/B 100 to 500 of your own rows before you trust any find-rate story.
The tools
Scorecard
| Fullenrich | AI ARK | |
|---|---|---|
| Category | Managed waterfall and enrichment API across 20 to 25-plus providers. | Hybrid database plus AI list-build plus enrich API. Not a multi-vendor waterfall. |
| Best for | Resolve email and mobile on high-ROI lists without wiring fifteen keys yourself. | Lookalike or semantic TAM build plus cheap first-pass enrich. |
| Entry paid (Sep 2026) | Pro starts at $29 for 500 credits or $55 for 1,000. | From $49 for 5,000 credits. Free includes 100 credits per month. |
| Work email credit | 1 credit. Miss costs 0. | About 1 credit (0.5 profile plus 0.5 email), or Clay single at 1 if found and 0 if not. |
| Mobile credit | 10 credits. Landline costs 0. Miss costs 0. | 5 credits. Miss costs 0 per FAQ. |
| Approx $/found mobile at list prices | About $0.55 at the $55 per 1K pack. | About $0.05 at the $49 per 5K pack. |
| Mobile coverage (agency test set) | About 96% EU and 98% US on one published July 2026 agency set. | About 11% EU and 48% US on the same agency set. |
| Speed / overall on that set | Median around 2 minutes. Overall score statistically tied. | Median around 2.3 seconds. Wins price, accuracy, and speed on their axes. |
| Seats | Unlimited on every plan. | Volume-linked seat bands in FAQ. Confirm live billing UI. |
| Clay / API fit | HTTP, API, and MCP. Common last-resort cascade column. | REST plus Clay v2 endpoints plus MCP. Often upstream source before Clay. |
Who for
pick Fullenrich
- You already have the list. The job is resolve email and mobile, not discover companies.
- EU or hard US mobiles matter more than sticker dollars per found.
- You want one managed cascade with miss costing $0 and will not wire provider keys yourself.
- You will gate spend to high-ROI lists. FullEnrich credits burn fast on dial-heavy volume.
- You need a last-resort Clay, HTTP, or MCP column after cheaper finders miss.
pick AI ARK
- The job is build or expand TAM with lookalike or semantic search.
- You need cheap first-pass email before any cascade.
- Unit economics and speed matter more than max mobile coverage.
- You will verify or waterfall downstream for long-tail and phones.
- You want a bulk source layer upstream of Clay, not the whole cascade.
FAQ
Is FullEnrich the same product as AI Ark?▾
No. FullEnrich is a managed multi-provider waterfall for contact resolve. AI Ark is database plus lookalike and semantic list-build with verified export. Same outbound stack, different jobs. Buying them as rivals is a category error.
Do I need both?▾
Often yes at production. The common pattern is pull lists from AI Ark or Sales Nav, then use FullEnrich for hard email gaps and mobiles. Keep AI Ark in the lead-source layer upstream of Clay, not as the waterfall.
Who is cheaper?▾
On sticker dollars per found mobile at published packs, AI Ark usually wins at about $0.05 on the $49 per 5K pack versus about $0.55 on FullEnrich's $55 per 1K pack. You are buying cascade coverage with FullEnrich, not the cheapest sticker. Model your phone mix before you crown a winner.
Does AI Ark replace a waterfall?▾
For first-pass email, sometimes. Some operators treat AI Ark enrich as verified at source and skip a cascade on that path. If phones and long-tail matter, plan FullEnrich or a Clay cascade under it.
Why does FullEnrich mobile feel expensive?▾
Published math: FullEnrich mobile is 10 credits, about $0.50 to $0.55 at Pro list prices. AI Ark mobile is 5 credits, about $0.05 at the $49 per 5K pack on dollars-per-found math. Miss costs $0 on both for mobile on those mobile paths. You pay for coverage depth.
Who should NOT buy FullEnrich?▾
Skip FullEnrich if your main job is cheap list-build, if you will not gate mobile spend, or if you already own a Clay bring-your-own-key cascade and only need cheaper hops. Also skip if you are shopping on a vendor find-rate claim with no methodology.
Who should NOT buy AI Ark?▾
Skip AI Ark if EU mobile coverage is the product, if you need a managed 20-plus vendor waterfall in one call, or if you need native CRM connectors today. CSV, API, and Clay HTTP are the real paths.
Can I trust bounce or find-rate percentages?▾
No. Vendor claims around 80% or 70% lack public methodology. Agency leaderboard percentages and campaign self-reports are on their sets. A/B 100 to 500 of your own rows. Trust that.
Clay fit?▾
Both plug in. A common Clay waterfall ending is cheaper finders first, FullEnrich last. AI Ark sits upstream as source or as a Clay enrich hop, not as the whole cascade.
What should I do next?▾
Name the stuck job. Hard mobiles or email gaps on a list you already have? Open FullEnrich and gate spend. Volume TAM or cheap first-pass? Open AI Ark. Already shipping outbound? Stack both and A/B your rows before you scale credits.
next step
Closing
If you already have a list and hard mobiles or email gaps are the problem, open FullEnrich and gate spend to high-ROI rows. If the stuck job is volume TAM, lookalike, or cheap first-pass email, open AI Ark and stop debating. If you're past both, build source to FullEnrich or Clay cascade to dedicated sender and stop arguing which logo wins. Stack them.