VS
Seamless.AI vs ZoomInfo
Seamless.AI and ZoomInfo both stop publishing prices as soon as you leave the free tier. Seamless.AI lists $0 with 50 credits for one user, then quotes Pro and Enterprise through sales on annual credit packages, from their published pricing, August 2026. ZoomInfo publishes nothing beyond its free Lite community edition, and per their 2025 annual report paid subscriptions are quoted on the functionality, users and records under management in each product edition. The unit of consumption differs. Seamless.AI spends one credit each time the platform researches a contact for emails, phone numbers and insights, with bulk credits sold separately for larger enrichment runs. ZoomInfo Lite grants a set amount of monthly credits, with extra credits available for joining their contributory network, while paid editions are sized on records under management rather than per lookup. Scope is the other difference. Seamless.AI bundles the outreach that follows the data: Connect for multichannel campaigns, built in emailing, an AI powered dialer and social selling. ZoomInfo bundles the go to market layer around it instead, with intent, website visitor identification, lead scoring, routing, enrichment and department level editions.
Both hide their real prices behind a sales call, so the choice is between Seamless.AI bundling the sending on top of the data and ZoomInfo bundling the intent, routing and enrichment layer around it.
Pick Seamless.AI if
- You want data and the sending that follows it in one subscription: Connect for multichannel campaigns, built in emailing, an AI powered dialer and social selling.
- API access matters early, since Seamless.AI made its REST API available on every plan including Free in May 2026, alongside an MCP server.
- You want to test the search properly before a sales call, using the free tier with 50 credits for one user.
- Ecosystem ties help your stack: it powers HubSpot's Breeze Prospecting Agent as of June 2026 and announced native n8n workflows in July 2026.
Pick ZoomInfo if
- Buying intent, website visitor identification, lead scoring and routing are the reason for the purchase, not contact records alone.
- The data has to serve marketing, operations and talent, which ZoomInfo packages as separate product editions.
- You want a large integration marketplace spanning CRMs, dialers, data warehouses and AI assistants including Claude and ChatGPT.
- Contracted enterprise scale matters: more than 35,000 customers and about $1.25 billion of 2025 revenue, per their annual report.
Seamless.AIZoomInfoSeamless.AIZoomInfoSeamless.AI1 user, 50 credits, no add-ons such as AI Assistant, Data Enrichment, Autopilot or Buyer Intent, self-serve support
50 credits, Email and phone lookup with real-time search, Exports, integrations, Pitch Intelligence, Connect and the job changes filter, API access included since May 2026
Credit volume set by the annual package you buy, quoted by sales
Annual credit packages, Unlimited exports, Free admin seat and advanced org management, All add-ons included, priority support queue and live chat
Custom, quoted by sales
Unlimited users, Custom credit packages, Dedicated success manager, quarterly business reviews and phone support
From their published pricing, August 2026. Only the Free tier carries a published price: $0 with 50 credits for one user. Pro and Enterprise are quoted by sales with annual credit packages, so no entry price for paid plans is published. Check their pricing page.
ZoomInfoA set amount of monthly credits, with additional credits available only by participating in their contributory network
Set amount of monthly credits, Extra credits for joining their contributory network, Access to contact data
Quoted per account on functionality, users and records under management
AI sales agent layer over their data, Account and buyer recommendations
Quoted per account on functionality, users and records under management
Company and contact search, Buying intent signals, Sales automation and engagement
Quoted per account on functionality, users and records under management
Account based marketing and audience activation, Website visitor identification, Ad targeting and form optimization
Quoted per account on functionality, users and records under management
CRM enrichment and data cleansing, Deduplication and lead routing, Data as a service delivery
Quoted per account on functionality, users and records under management
Candidate sourcing on the same data set, Recruiting workflows
ZoomInfo does not publish prices. Subscriptions are quoted per account based on the functionality, users and records under management included in each product edition, per their 2025 annual report, checked August 2026. Check their pricing page.
Seamless.AI pros
- Real-time verification model rather than a static list, with 1.3B+ contacts and 121M+ companies claimed
- Data and outreach in one subscription: Connect, emailing, an AI dialer and social selling sit on top of the search
- API access on every plan including the free tier since May 2026, plus an MCP server for AI tooling
- Buyer intent, job changes and CRM enrichment cover the signals most enrichment tools charge separately for
- GetApp reviewers rate it 4.5 from 571 reviews, with ease of use at 4.6
Seamless.AI cons
- Only the free tier has a published price, so Pro and Enterprise require a sales conversation and an annual credit package
- Reviewers report occasional data inaccuracies and high email bounce rates
- Reviewers describe the pricing as confusing or steep, with limited transparency and a restrictive free credit allowance
- Users report slow customer support responses on unresolved issues
ZoomInfo pros
- One contracted source covering contact and company data, buying intent, website visitor identification, enrichment and routing
- Product editions map to whole departments: Sales, Marketing, Operations and Talent, rather than one generic seat
- Large integration marketplace spanning CRMs, dialers, data warehouses and AI assistants including Claude and ChatGPT
- AI layers shipped rather than promised, with Copilot, GTM Workspace, GTM Studio and an MCP server
- A free community edition, ZoomInfo Lite, with a monthly credit allowance
ZoomInfo cons
- No published pricing at all, so cost cannot be compared without a sales conversation
- Growth has flattened, with Q2 2026 revenue up 1.2 percent year over year and a $650.5 million goodwill impairment in the same quarter
- Net revenue retention was 90 percent at the end of 2025 and 87 percent a year earlier, meaning existing customers on average spent less than the year before
- Recent Trustpilot reviews are dominated by data removal and consent complaints rather than product criticism
Neither, once you go past free. Seamless.AI publishes $0 with 50 credits for one user, and quotes Pro and Enterprise through sales on annual credit packages, from their published pricing, August 2026. ZoomInfo publishes no prices at all, and per their 2025 annual report subscriptions are quoted per account on the functionality, users and records under management in each edition. Budget for a sales conversation with either.
Seamless.AI markets itself as a real time search engine rather than a static list, at 1.3B+ verified contacts and 121M+ companies, with 1.8B+ business emails and 414M+ phone numbers claimed on their homepage. ZoomInfo does not publish a record count on the sources reachable for this listing, describing coverage instead through org charts, hierarchies, locations, technographics and funding details. Both sets of figures are vendor claims and are not independently audited here.
Both records are two sided. Seamless.AI scores 4.5 from 571 reviews on GetApp, with ease of use at 4.6, against 1.3 out of 5 on Trustpilot where cancellation, payment and subscription are top mentions, and reviewers report occasional inaccuracies and high email bounce rates. Recent ZoomInfo Trustpilot reviews are dominated by data removal and consent complaints rather than product criticism. Test a sample against your own ICP before signing an annual package.
Seamless.AI does both through its Engagement Hub, which adds Connect for multichannel campaigns, built in emailing, an AI powered dialer and social selling on top of the data products, so contacts can be worked without exporting them first. ZoomInfo lists sales automation and engagement in its Sales edition and integrates with dialers including Aircall, Five9, Dialpad and Genesys, so the calling usually happens in a connected tool.
One of these tools is ours.
Weezly is in this directory too: LinkedIn outreach with AI clone videos, a 300M+ leads database and booking, from $59 per month. See if it earns a spot in your stack.