Seamless.ai is a sales prospecting platform that finds B2B contact data through a real-time search engine and a Chrome extension. Its own pricing page lists three tiers, Free, Pro, and Enterprise, with both paid tiers marked “Contact sales” and no public price, and its site publishes no accuracy figure for phone numbers (seamless.ai/pricing, checked September 15, 2026). On G2, Seamless.ai holds about 5,300 reviews at a 4.4 average as of the same date; the recurring themes in 2025 and 2026 reviews are data accuracy, credits spent on lookups that return nothing, and billing and cancellation terms. Those are user reports, not vendor statements, and you can read them on G2.
If you are looking for direct dials you can trust, a price you can see before you talk to sales, or a simpler workflow, this guide covers the best Seamless.ai alternatives, with every product and pricing fact taken from the vendor’s own live site on September 15, 2026. Where a vendor does not publish a figure, we say so.
Top 3 Seamless.ai Alternatives at a Glance
| Tool Name | Best For | What the vendor publishes about phone data |
| Lusha | US direct dials, self-serve, public pricing | Phone and email accuracy figures with method on lusha.com/data; 2x US contacts with a direct phone number vs ZoomInfo in a published August 2026 coverage test* |
| Apollo.io | Data plus sequencing in one tool | “Less than 1% invalid direct phone numbers” (apollo.io/product/b2b-data) |
| ZoomInfo | Enterprise market intelligence | Hit rates published: mobile 87%, direct dial 72% (zoominfo.com/data) |
*Coverage figures from a test of five US ICPs on both platform interfaces, 11 August 2026. Quantity and fill rate only: accuracy not tested. ZoomInfo led on work email fill rate in the same test. Full methodology.
Lusha
Lusha is the alternative to pick if the reason you are leaving Seamless.ai is direct dials. Lusha publishes its phone and email accuracy figures and how they were measured on its data page, shows plans and prices on lusha.com/pricing, and starts with a free plan that needs no credit card. In a published test of five US ICPs on 11 August 2026, Lusha returned twice as many US contacts with a direct phone number as ZoomInfo; the test measured quantity and fill rate, not accuracy, and ZoomInfo led on work email fill rate in the same test.
Features
- 290M+ business contacts overall.
- 165M+ verified emails.
- Phone and email accuracy published with method on lusha.com/data.
- 26 live buying signals, including funding, hiring surges, and job changes.
- GDPR, CCPA, ISO 27001, ISO 27701, SOC 2 Type II.
- Continuous CRM enrichment for Salesforce and HubSpot.
- MCP server and API, so Claude, ChatGPT, and your own agents work from the same data your reps use.
- Plans and prices published; Free plan with no credit card.
- Chrome extension for LinkedIn and the web.
Seamless.ai vs Lusha: Who is better?
Two differences you can check on each vendor’s site today. Seamless.ai’s pricing page shows paid plans as “Contact sales” and publishes no accuracy figure for phone numbers; Lusha publishes both prices and accuracy figures with method. Seamless.ai lists SOC 2 Type 2 on its pricing page; Lusha lists GDPR, CCPA, ISO 27001, ISO 27701, and SOC 2 Type II on its data page. Seamless.ai’s data volume claims on its own site are larger: 1.3B+ verified contacts and 414M+ mobile numbers (platform overview). If headline volume is the deciding factor, that is the number to weigh against a published accuracy method.
- Compare Seamless.ai vs Lusha
Apollo.io
Apollo.io is the alternative if you want the database and the email sequencing in one product. Apollo publishes prices: Free at $0, Basic at $49, Professional at $79, and Organization at $119 per user per month on annual billing, with credits per plan stated on the pricing page (apollo.io/pricing, September 15, 2026).
Features
- 240M+ contacts and 30M+ companies, per Apollo’s data page.
- Apollo states “98% email accuracy” and “less than 1% invalid direct phone numbers” on the same page.
- Built-in email sequencing and a US dialer from the Professional plan.
- Free tier with 900 credits a year.
- Salesforce and HubSpot bi-directional sync.
- ISO 27001, SOC 2, GDPR stated on the data page.
- MCP server, plus use inside ChatGPT and Claude.
Apollo.io vs Seamless.ai: Who is better?
Apollo is the choice for a team that wants to prospect and send from one screen, and it publishes its prices where Seamless.ai does not. Seamless.ai’s own site claims a larger database (1.3B+ contacts vs Apollo’s 240M+). Apollo is the only one of the two to publish a phone accuracy statement.
- Compare Apollo.io vs Lusha
- See top Apollo.io alternatives
ZoomInfo
ZoomInfo is the enterprise option: quote-based pricing, no public prices, and a 7-day trial with no credit card (zoominfo.com/pricing, September 15, 2026). It is the one vendor in this list that publishes hit rates by field.
Features
- 500M+ professional profiles and 135M+ direct dial numbers, per zoominfo.com/data.
- Published hit rates: business email 96%, mobile phone 87%, direct dial 72%.
- North America coverage stated: 157.8M+ contacts, 77.7M+ mobile numbers.
- Intent data, org charts, and workflow automation on the higher plans.
- Salesforce, HubSpot, Marketo, Outreach, Salesloft integrations.
- MCP server and a ChatGPT integration.
ZoomInfo vs Seamless.ai: Who is better?
ZoomInfo publishes what Seamless.ai does not: coverage by region and hit rate by field. Neither publishes a price. ZoomInfo’s plans are built for enterprise procurement, so a team that wants to sign up and start today is better served by a self-serve tool on this list.
- Compare ZoomInfo vs Lusha
- See top ZoomInfo alternatives
Cognism
Cognism is the alternative for teams selling into Europe as well as the US. Pricing is quote-based with no self-serve free plan (cognism.com/pricing, September 15, 2026). Its phone positioning rests on Diamond Data, a set of numbers Cognism says it verifies by calling.
Features
- 10M+ phone-verified contacts globally, per cognism.com/diamond-data.
- Cognism states a “3x connect rate” for Diamond Data; it publishes no percentage accuracy figure on its live pages.
- Do Not Call screening across US, UK, and other national lists.
- ISO 27001, ISO 27701, SOC 2 Type II, GDPR, CCPA on its security page.
- Salesforce, HubSpot, Dynamics, Outreach, Salesloft integrations.
- Cognism does not publish a headline contact total; its FAQ says it does not make general coverage claims.
Cognism vs Seamless.ai: Who is better?
Cognism publishes the strongest compliance list on this page and screens against Do Not Call lists, which Seamless.ai does not mention on its pricing page. Cognism does not publish prices or a free plan, so it suits a team buying through procurement, not a rep signing up on a Tuesday.
- Compare Cognism vs Lusha
- See top Cognism alternatives
UpLead
UpLead publishes prices and a guarantee. Essentials is $99 a month and Plus is $199 a month, or $74 and $149 on annual billing, with a 7-day free trial of 5 credits (uplead.com/pricing, September 15, 2026).
Features
- “95% data accuracy” stated on the pricing page; the guarantee is worded around email verification.
- Mobile direct dials labeled separately from HQ lines.
- Technographic search across 16,000+ technologies.
- Monthly plans with no contract, and annual plans at a lower rate.
- Salesforce, HubSpot, Zoho, Pipedrive, Outreach, Salesloft and more.
- UpLead does not publish a headline contact total or a phone accuracy figure on its site.
UpLead vs Seamless.ai: Who is better?
UpLead publishes its prices and an accuracy guarantee; Seamless.ai publishes neither. UpLead’s guarantee is written around email, so if direct dials are the reason you are switching, ask for the phone figure before you buy.
- Compare UpLead vs Lusha
- See top UpLead alternatives
RocketReach
RocketReach is a lookup tool built around its browser extension and API. Its site describes coverage of 700M+ professionals. Plans are on rocketreach.co/pricing; the page did not render for verification on September 15, 2026, so we state no prices here.
Features
- 700M+ professionals, per RocketReach’s site description.
- Browser extension that works on LinkedIn and across the web.
- Bulk lookups and an API.
- ISO 27001 and SOC 2 stated on its security post.
- RocketReach publishes no phone accuracy figure on its site.
RocketReach vs Seamless.ai: Who is better?
RocketReach is the lighter tool: a lookup extension with an API, without the sequencing or signals of the larger platforms. Neither vendor publishes a phone accuracy figure. Check the RocketReach pricing page directly for current plans.
- Compare RocketReach vs Lusha
- See top RocketReach alternatives
Lead411
Lead411 sells on unlimited views. Its pricing page lists unlimited email and direct phone number views with a monthly export allowance, a 7-day trial of 50 exports, and per-export overage rates, but no monthly dollar price for the plans themselves (lead411.com/pricing, September 15, 2026).
Features
- Unlimited direct phone number views on the Basic Plus Unlimited plan, with 200 exports a month.
- “Double verified direct dials” and “human verified” phone numbers stated on the pricing page.
- Bombora intent data on Pro and Enterprise annual plans.
- 25+ CRM and SaaS integrations included.
- Lead411 publishes no phone accuracy figure and no compliance certifications on its pricing or home page.
Lead411 vs Seamless.ai: Who is better?
Lead411’s unlimited-view model removes the “credit spent on a bad number” problem that Seamless.ai users report. Neither vendor publishes a phone accuracy figure, and Lead411 publishes no certifications, so ask for both before signing.
LeadIQ
LeadIQ is built for reps who work inside LinkedIn Sales Navigator and their CRM: capture a contact from a profile and sync it to Salesforce, HubSpot, or Outreach in one click. Product and pricing details are on leadiq.com.
Features
- One-click capture from LinkedIn to Salesforce, HubSpot, and Outreach.
- Team governance to limit duplicate records.
- Account-based prospecting views.
LeadIQ vs Seamless.ai: Who is better?
LeadIQ is a workflow layer on top of LinkedIn; Seamless.ai is a search destination. Teams that live in Sales Navigator and want clean CRM sync pick LeadIQ. Check its site for current data and pricing terms.
Kaspr
Kaspr is a LinkedIn extension for individual SDRs and small teams that want a number and an email while browsing a profile. Product and pricing details are on kaspr.io.
Features
- Data retrieval from LinkedIn profiles through a Chrome extension.
- Lead management in a simple dashboard.
- Free plan for testing.
Kaspr vs Seamless.ai: Who is better?
Kaspr is the simpler tool for LinkedIn-only prospecting. Seamless.ai searches beyond LinkedIn. Check Kaspr’s site for current plan terms.
Hunter
Hunter is an email finder and verifier. If you do not need phone numbers and only want professional email addresses tied to a domain, it is a low-cost option. Product and pricing details are on hunter.io.
Features
- Domain search for all emails at a company.
- Email verifier.
- Firefox and Chrome extensions, and an API.
Hunter vs Seamless.ai: Who is better?
Hunter is the pick for email-only outreach on a budget. It does not provide phone numbers, so it is not an alternative for direct dials.
- Compare Hunter vs Lusha
- See top Hunter alternatives
How to compare direct-dial providers before you switch
Four questions, each answerable from a vendor’s own site in five minutes. Does it publish prices? Only Apollo, UpLead, and Lusha do on this list. Does it publish a phone accuracy figure and how it was measured? Apollo, ZoomInfo, and Lusha publish a figure; Cognism publishes a connect-rate claim; Seamless.ai, UpLead, RocketReach, and Lead411 publish none. Does it publish coverage by region? ZoomInfo and Lusha do. Which certifications does it name? Cognism and Lusha publish the longest lists; Seamless.ai names SOC 2 Type 2 on its pricing page. A vendor that answers all four in public is a vendor you can hold to its numbers.
All vendor facts in this article were checked against each vendor’s own live website on September 15, 2026. Vendors change pricing and claims without notice; follow the links to confirm before you buy. User review figures are from G2 as displayed on the same date.
