Key takeaways
- Seamless.AI centres on a real-time search engine for contact details, with a free start on credits.
- ZoomInfo sells separate sales and marketing packages that add intent, visitor data, dialling and chat.
- Neither product is rated here; the right pick depends on how much of a data platform you need.
- Pebbles Ai finds work emails at up to ten named companies a run, with no phone numbers or intent data.
What is the difference between Seamless.AI and ZoomInfo
The difference is scope: Seamless.AI is built around searching for contacts in real time, while ZoomInfo is a data platform sold as packages for sales and marketing teams. Seamless.AI groups its product into a Data Engine, an Engagement Hub and AI Agents, so the search sits at the centre and the other parts help you act on what it returns.
ZoomInfo sells several products. Its sales packages run from Professional to two AI-assisted tiers, and its marketing side offers Marketing Demand, ABM Lite and ABM Enterprise. Buyer intent, website visitor data, Chorus conversation intelligence and a chat product all sit in the same catalogue.
Where each one is stronger
Seamless.AI is stronger for a seller who wants to type a name or company and get contact details back quickly, and who wants to try that before talking to a salesperson. Its free start on credits makes a small trial easy to arrange.
ZoomInfo is stronger when several teams share one data source. Mobile numbers, AI email generation, intelligent dialling and buyer intent serve sales, while the ABM packages serve marketing. Plans are quoted, so buying it is a sales conversation rather than a sign-up.
Should you choose Seamless.AI or ZoomInfo
Choose Seamless.AI if your need is contact lookup for a few reps and you would rather start small; choose ZoomInfo if marketing and sales both need intent and account data from one contract. Picture an illustrative five-person founder-led team: it mainly needs contact details for accounts it already knows, which points to the lighter tool.
A revenue team running account-based campaigns with marketing and a calling floor points the other way, because ZoomInfo bundles those motions into its packages.
Where Pebbles Ai fits as a third option
Pebbles Ai fits when the hard part is not data volume but doing something useful with a short list of target companies. You name between one and ten companies, a role and a location, and Find fresh leads returns up to one hundred leads a run from Pebbles Ai's own growing B2B contact database, GDPR compliant, each with a work email where one is found and a confidence score.
It does not fit if you need phone numbers, buyer intent or website visitor identification: Pebbles Ai has none of those. Where it adds value is the step after the lookup, with assistants that research each account and draft email and LinkedIn messages from your Company Intel.
What to check before buying a contact data tool
Check how each vendor counts usage and what you need beyond the lookup itself, because both products bundle different extras.
- Whether you need mobile numbers or only work emails.
- Whether marketing will use intent or visitor data, or only sales.
- How credits or seats are counted on the plan you would buy.
- Which CRM the data must reach, and how it gets there.
- Each vendor's own trust pages for how it handles personal data.
Seamless.AI, ZoomInfo and Pebbles Ai side by side
What each product offers on the points buyers ask about, in its own terms.
| Seamless.AI | ZoomInfo | Pebbles Ai | |
|---|---|---|---|
| Positioning | A real-time search engine for B2B contacts | A data platform with sales and marketing packages | AI assistants for research, leads, CRM and drafted outreach |
| Main parts | Data Engine, Engagement Hub and AI Agents | Sales packages, Marketing Demand, ABM Lite and ABM Enterprise | Assistants, built-in CRM (Beta), Smartbox and Socialbox |
| Contact details | Contacts found by real-time search | Contact data including mobile numbers | Work emails with a confidence score and catch-all flag; no phone numbers |
| Intent and visitor data | See their site | Buyer intent and website visitor data | None |
| Writing outreach | See their site | AI email generation | Email and LinkedIn drafts in your brand voice, saved to Gmail or Outlook |
| Calling | See their site | Intelligent dialling | None |
| How plans are sold | Free start with credits | Quote-based | Seat-based plans; see the pricing page |
Checked 2 November 2026 on each vendor's public pages. The two named products' cells state only what their own sites say; where a site says nothing on a point, the cell reads See their site.
The products compared
Seamless.AI
Real-time B2B contact search
A B2B contact search engine that finds sales leads in real time, with a data engine, an engagement hub and AI agents, and a free start with limited credits.
Best for: Sellers who want to look up contact details for named prospects quickly.
Pricing model: Plans and prices are on their own pricing page. Source: Seamless.AI pricing
ZoomInfo
B2B data and sales intelligence platform
An enterprise B2B data platform for sales and marketing teams, offering contact and company data, buyer intent, website visitor data and AI email generation in packaged, quote-based plans.
Best for: Larger sales and marketing organisations that need deep contact coverage, intent signals and conversation intelligence under one enterprise contract.
Pricing model: Packages priced by features, licences and credits (1 export = 1 credit); quote-based. Source: ZoomInfo pricing
We make Pebbles Ai. Facts about other products come from their own public pages, checked on .
Where Pebbles Ai fits
- CapabilityProspecting & customer recordsFind fresh leads searches up to ten named companies by role and location and adds each lead to the CRM with a work email where found and a confidence score.
- CapabilityOutreach contentThe assistants draft email and LinkedIn touches from Company Intel and save emails as drafts in your connected mailbox.
Common questions
Which of the two offers buyer intent data?
ZoomInfo lists buyer intent and website visitor data among its products. Seamless.AI's own pages focus on contact search, so check with them directly. Pebbles Ai has no intent data.
How do Seamless.AI and ZoomInfo sell their plans?
Seamless.AI lets you start free on credits, and ZoomInfo sells its packages on quotes. This page does not compare their prices; each vendor's own pricing page is the place to check.
Can Pebbles Ai replace Seamless.AI or ZoomInfo?
Only for some teams. If you prospect into a short list of named companies and need emails rather than phone numbers, Pebbles Ai can cover lead finding and drafting; for open market search, intent or dialling, keep a data platform.
Can I bring contacts from either tool into Pebbles Ai?
Yes, as a CSV. The Pebbles Ai CRM imports contacts from a CSV file as well as from Google and Microsoft accounts.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .
