Seamless.AI alternatives and competitors in 2026: 9 tools compared

The best Seamless.AI alternatives and competitors in 2026 are Scalelist, Apollo.io, ZoomInfo, Lusha, RocketReach, UpLead, Lead411, ContactOut and Swordfish AI. Eight of the nine publish a price you can pay by card today. Seamless.AI’s paid plans, like ZoomInfo’s, start with a sales call.

Every tool below gets the same seven fields, taken from its own pricing page on 27 September 2026: what it is, entry price, how pricing works, mobile numbers and their cost, whether a miss is charged, who it fits and where it falls short. When a vendor does not publish something, we write “not published”.

Why people look for Seamless.AI alternatives

Most teams look for Seamless.AI alternatives because of how Seamless.AI sells, not because it lacks data. Its pricing page and help center describe quote-only annual credit packages, and several terms are hard to pin down before you sign.

• No public price. Pro and Enterprise both say “Contact sales”. Vendr, a software buying marketplace, shows an estimate tool for Seamless.AI but no median contract, so there is no outside benchmark either.
• Annual credit packages. Pro is sold per user as “Annual Credit Packages”. A monthly paid option is not published.
• Two different allowances. The pricing FAQ says Pro starts at “10,000 annual credits”. The help center says Pro users “receive 10,000 Universal Credits per month”. Ask which one your contract means.
• Credits that do not come back. Free-license credits “do not replenish”, and bulk pool credits “do not automatically replenish”.
• Add-ons. Buyer Intent, Data Enrichment, Autopilot and the AI Assistant are listed as add-ons, and integration access “depends on the individual plan”.
• No published miss rule. Seamless.AI refunds the credit when a returned email does not work. What happens when research finds no email or phone at all is not published.

To be fair to Seamless.AI: one credit researches a contact and returns all of its titles, emails and phone numbers, which keeps the math simple. It claims 1.6B+ verified business emails and 448M+ phone numbers, it is SOC 2 Type II certified, and its free plan gives one user 50 credits.

If a large annual pool suits how your team works, it is still a reasonable buy. Our Seamless.AI pricing breakdown explains the credit types. This page is for teams that want to see what else is out there first.

Seamless.AI alternatives and competitors compared at a glance

The 9 Seamless.AI alternatives differ most on four things that change your bill: the entry price, the billing model, what a mobile number costs and whether you pay when nothing is found.

Tool	Best for	Entry price	Mobile numbers	Charged on a miss
Scalelist	Teams that call and email	29 USD/mo for 500 credits	Yes, 20 credits each	No
Apollo.io	Data plus sequences per seat	49 USD/seat/mo, billed yearly	Yes, 8 credits each	No, on Apollo’s own data
ZoomInfo	Enterprise data and intent	Not published (quote, annual)	Yes, on paid plans	Not published
Lusha	Individual reps, self-serve	37.45 USD/mo, billed yearly	Yes, 5 credits each	Partly
RocketReach	Low-cost annual lookups	27 USD/mo yearly, email only	Yes, from the Pro plan	No, lookup refunded
UpLead	Small teams, month to month	99 USD/mo for 170 credits	Yes, in 1 credit per contact	No, if the email fails
Lead411	Lowest entry with direct dials	49 USD/mo for 1,000 exports	Yes, included	Not published
ContactOut	One user, flat monthly price	49 USD/mo, email only	Yes, on the 99 USD plan	Not published
Swordfish AI	Phone-first teams outside the EU	49 USD/mo, billed yearly	Yes, unlimited under fair use	No per-contact credits

For reference, Seamless.AI itself: paid plans are quote only, one credit per researched contact covers emails and phones, and the miss rule is not published.

Which Seamless.AI alternative is best?

The best Seamless.AI alternative depends on why you are leaving. If you want the same annual, all-in-one model with deeper intent and company data, ZoomInfo is the step up, and it is quote-only too. If you want contact data plus sequences and a dialer on a per-seat plan you can buy today, Apollo.io is the most direct swap.

Tools like Seamless.AI differ most in how they sell the phone number. If your reps live on the phone, Scalelist sells mobile numbers you pay for only when they are found, with no seats and no annual contract. Swordfish AI and ContactOut sell flat plans with phone lookups under fair-use caps. For the lowest self-serve bill, Lead411, RocketReach and Lusha all start under 50 USD a month.

How we picked and compared these tools

We picked the Seamless.AI competitors that buyers shortlist for the same job, emails and cell phone numbers for outbound, then checked each one against the same criteria on its own website.

• Published price: the cheapest paid plan, with both billing options where the page shows them. Quote-only means “not published”.
• Billing model: seats, credits, lookups, exports or flat fees, and whether monthly billing is allowed.
• Mobile numbers: sold or not, and what one costs in credits and in dollars at the entry plan.
• Misses: whether a lookup that finds nothing costs you anything, in the vendor’s own words.
• Evidence: coverage numbers only from our own published benchmark, and only for tools that were in it. Vendor claims are labeled as claims.
• Date: every pricing page was rendered in a US-locale browser on 27 September 2026. Prices change, so check before you sign.

The 9 best Seamless.AI alternatives in 2026

The tools are grouped by how they sell: Scalelist first, then the per-seat and quote-only platforms, the self-serve databases, and two flat-price phone tools.

1. Scalelist

• What it is: Scalelist is an AI Lead Finder. You describe the people you want in one sentence, see how many match for free, then get them with verified work emails and mobile numbers.
• Entry price: 29 USD a month for 500 credits (Scaler 500), or 290 USD a year. Plans go up to 649 USD a month for 20,000 credits, with custom plans above that (Scalelist pricing).
• How pricing works: Credits, with no seats and no annual contract. 1 credit per lead found, 1 per email found, 20 per mobile found. Unused credits roll over, up to 2x the monthly allocation, while you stay subscribed.
• Mobile numbers: Yes, 20 credits per mobile found. That is about 1.16 USD on the 500-credit plan, 0.80 USD at 5,000 credits and 0.65 USD at 20,000.
• Charged on a miss: No. Nothing is charged when nothing is found, and every email comes back labeled Valid or Risky.
• Best for: Teams that call as much as they email and want a public price instead of a quoted annual pool.
• Where it falls short: It is not the cheapest per phone (see Apollo.io, Lusha, Lead411 and ContactOut below). No intent data, no sequencer or dialer. HubSpot is the only native CRM; Salesforce and others connect through Zapier or the API.

2. Apollo.io

• What it is: Apollo.io is an all-in-one sales platform: a B2B contact database plus sequences, a dialer and deal tools, sold per seat with a credit allowance.
• Entry price: 49 USD per seat a month billed yearly (Basic, 30,000 credits per seat a year), or 65 USD billed monthly (2,500 credits a month). Free plan available (Apollo pricing page).
• How pricing works: Per seat plus credits. An email costs 1 credit and a phone number 8. The Organization plan is annual only, with a 3-seat minimum.
• Mobile numbers: Yes, 8 credits per phone number: about 0.21 USD on Basic billed monthly and 0.16 USD billed yearly. Apollo does not charge for HQ lines, and it does not refund credits for mobile numbers.
• Charged on a miss: No for Apollo’s own data: “You aren’t charged if a source can’t find any data.” Its multi-source enrichment can bill for unverified results from connected providers.
• Best for: SMB and mid-market teams that want data, sequencing and a dialer in one per-seat tool.
• Where it falls short: Seats add up as the team grows. In our benchmark, Apollo found a phone number for 50% of the North America list, 63% in EMEA and 8% in APAC.
• Read next: Apollo pricing, plan by plan · Scalelist vs Apollo.io · Apollo.io alternatives

3. ZoomInfo

• What it is: ZoomInfo is an enterprise B2B go-to-market data platform (contacts, companies and intent) sold on custom-quoted annual contracts, with a free ZoomInfo Lite tier.
• Entry price: Not published. Paid plans are custom-quoted; ZoomInfo Lite is free with 10 credits a month (ZoomInfo pricing article). Vendr reports a median contract of 33,500 USD across 1,573 purchases.
• How pricing works: Quote only, annual, with a minimum number of seats. “For each exported record, one credit is charged,” and monthly credits cannot be rolled over.
• Mobile numbers: Yes, on paid plans, which add “direct dials, mobile numbers, org chart data”. A price per number is not published.
• Charged on a miss: Not published.
• Best for: Larger teams that want one enterprise data, intent and engagement platform and can commit to an annual contract.
• Where it falls short: It is the same buying model as Seamless.AI, at a larger scale: no public price, annual upfront billing, and ZoomInfo’s own note that “renewal pricing can increase”. Two users exporting the same record pay two credits.
• Read next: ZoomInfo pricing · Scalelist vs ZoomInfo · ZoomInfo competitors compared · ZoomInfo review

4. Lusha

• What it is: Lusha is a self-serve B2B contact data platform (web app, browser extension, API and MCP) that sells verified emails and phone numbers on credit plans.
• Entry price: 37.45 USD a month billed yearly (Starter, 4,800 credits a year), or 49.90 USD billed monthly (400 credits a month). Free plan: 40 credits a month (Lusha pricing page).
• How pricing works: Credits. An email costs 1 credit and a phone number 5. Monthly Pro and Premium plans roll credits over up to 2x; annual credits reset at the end of the year.
• Mobile numbers: Yes, 5 credits each: about 0.62 USD on Starter billed monthly and 0.47 USD billed yearly.
• Charged on a miss: Partly. CSV rows with no match are free, but every API request costs at least 1 credit, and bulk reveals charge for contacts with partial data.
• Best for: Individual reps and small teams that want month-to-month access from a browser extension.
• Where it falls short: Teams above 5 users must go through sales, CSV exports cost 1 credit per 25 rows, and per-user credit limits need the Scale plan.
• Read next: Lusha pricing · Scalelist vs Lusha · Lusha alternatives

5. RocketReach

• What it is: RocketReach is a self-serve contact lookup tool that returns verified emails and, on higher plans, mobile and direct phone numbers.
• Entry price: 27 USD a month billed yearly (Essentials, 329 USD a year, email only), or 49 USD billed monthly. Phone numbers start on Pro at 69 USD a month billed yearly or 99 USD monthly (RocketReach pricing page).
• How pricing works: Per seat. Monthly plans cap lookups at 100, 250 or 1,000 a month; annual plans list unlimited lookups and cap exports at 1,200, 3,600 or 20,000 a year.
• Mobile numbers: Yes on Pro and Ultimate, inside the same lookup as the email. On Pro billed monthly that is about 0.40 USD per lookup.
• Charged on a miss: No. “A lookup is used if we find and verify email or phone, otherwise it is refunded.”
• Best for: Individuals and small teams that want a low annual price and no charge for contacts that are not found.
• Where it falls short: No phones on Essentials, pooled team credits need a custom plan from 6,000 USD a year, and email sending is capped at 500 a day.
• Read next: RocketReach pricing explained · RocketReach alternatives

6. UpLead

• What it is: UpLead is a B2B contact database that sells verified emails and mobile direct dials on monthly credit plans, where one credit covers one contact.
• Entry price: 99 USD a month (Essentials, 170 credits, 1 user). Free trial: 5 credits over 7 days (UpLead pricing page).
• How pricing works: Credits, 1 per contact, covering both the email and the mobile. Extra credits cost 0.60 USD on Essentials and 0.50 USD on Plus. Monthly plans have no contract; Professional is annual only.
• Mobile numbers: Yes, included in the 1 credit per contact: about 0.58 USD per contact on Essentials.
• Charged on a miss: No for emails that fail verification: UpLead’s API deducts a credit only when the email comes back “Valid” or “Accept All”.
• Best for: Small teams that want email and mobile in one simple per-contact price, month to month.
• Where it falls short: 1 user per plan below Professional. Buyer intent, full API access and bi-directional CRM sync are Professional only, which is billed yearly.
• Read next: UpLead pricing · Scalelist vs UpLead

7. Lead411

• What it is: Lead411 is a B2B contact database with verified emails, direct dials and Bombora intent data, sold on export-based plans.
• Entry price: 49 USD a month (Spark, 1,000 exports a month) or 490 USD a year (12,000 exports). Free trial: 50 exports over 7 days (Lead411 pricing page).
• How pricing works: Exports, not credits per data point. Unused exports roll over to the next billing cycle. Ignite starts at 150 USD a month and adds API access.
• Mobile numbers: Yes, included: every plan lists “Direct Phone Numbers Included”. On Spark that is about 5 cents per export.
• Charged on a miss: Not published.
• Best for: SMB outbound teams that want the lowest entry price with direct dials included.
• Where it falls short: Buyer intent and unlimited exports are annual only, the API starts on Ignite, and Lead411 does not say whether an export with no email or phone counts.
• Read next: Lead411 pricing

8. ContactOut

• What it is: ContactOut is an email and phone finder (browser extension, search portal and API) sold as flat monthly plans with export limits.
• Entry price: 49 USD a month for the Email plan with US and UK data included, or 25 USD if you exclude US and UK data. Email + Phone is 99 USD a month (ContactOut pricing page). Annual prices: not published.
• How pricing works: Flat monthly plans for 1 user per company. “Unlimited” lookups sit under a fair-use limit of 2,000 email credits and 1,000 phone credits per account a month, and exports are capped at 300 (Email) or 600 (Email + Phone) a month.
• Mobile numbers: Yes, on Email + Phone only: about 0.17 USD per export if you use all 600 exports.
• Charged on a miss: Not published.
• Best for: One recruiter or seller who wants flat-price email and phone lookups within a monthly cap.
• Where it falls short: One user per company on self-serve plans, the discounted prices carry a “Limited time only” label, and team plans and the API are contact-sales only.
• Read next: ContactOut pricing · Scalelist vs ContactOut · ContactOut alternatives

9. Swordfish AI

• What it is: Swordfish AI is a contact data platform that sells uncapped, fair-use access to mobile numbers and emails for recruiters and sales teams.
• Entry price: 49 USD a month billed yearly (Professional), or 99 USD billed monthly. Team & Scale for up to 5 users is 149 USD a month billed yearly or 299 USD monthly (Swordfish AI pricing page).
• How pricing works: Flat plans with no credits: “Unlimited contact unlocks (mobiles + emails) under fair use.” The fair-use thresholds are not published.
• Mobile numbers: Yes, it is the core product: “verified cell phone numbers and email addresses”. Not priced per number.
• Charged on a miss: Not applicable. Paid plans have no per-contact credits (“No Credits. No Surprises.”).
• Best for: Recruiters and phone-first sales teams outside the EU who want flat-price mobile lookups.
• Where it falls short: No contact data on EU-based individuals. Bulk enrichment, CRM integrations and the API need Team & Scale, and the 7-day trial needs a card and turns into a paid plan unless you cancel.
• Read next: Swordfish AI alternatives

What does a mobile number cost with each Seamless.AI alternative?

At each tool’s cheapest plan with phones, billed monthly, one mobile number costs from about 5 cents to 1.16 USD. The low end comes from tools that bundle the phone into an export or lookup; Seamless.AI and ZoomInfo do not publish a figure to compare.

Two things change the real number. First, a bundled export is only cheap if it contains a phone you can dial, and Lead411 and ContactOut do not publish their miss rules. Second, yearly billing and bigger plans cut most of these prices: Apollo.io drops to 0.16 USD, Lusha to 0.47 USD and Scalelist to 0.65 USD at 20,000 credits.

Why Scalelist is the better fit for teams that call and email

Scalelist fits teams whose reps pick up the phone, because it prices the mobile number openly and charges only when one is found. Here is the case, and where it stops.

A public price instead of a quoted pool

Seamless.AI’s paid plans start with a sales call. Scalelist starts at 29 USD a month for 500 credits and moves up in six public steps to 649 USD for 20,000 credits, billed monthly or yearly, with no seats. You also see how many people match your description before you spend a credit, so you can size a market for free.

Mobiles you pay for only when they are found

A mobile costs 20 credits, an email 1 and a lead 1, and a miss costs nothing. Seamless.AI does not publish whether research that finds nothing uses a credit. With Scalelist, a list of 300 contacts from your own file where 200 mobiles are found costs 4,000 credits, not 6,000.

Coverage we measured and published

We ran the same list of founders through 8 data providers in North America, EMEA, APAC and Latin America, and published the raw data in our B2B data provider comparison. Scalelist found a phone number for 87% of the North America list, 73% in EMEA, 75% in APAC and 85% in Latin America.

Seamless.AI was not in that test. Apollo.io, the only tool on this page that was, found 50%, 63% and 8% (it was not tested in Latin America). It is our own test, not an independent study, so run 100 of your own contacts through your shortlist before you sign. Our provider test method shows how.

One sentence instead of a search form

You describe the audience, for example “VPs of Sales at US logistics companies with 50 to 500 employees”. The Scalelist Lead Finder shows what it understood (title, industry, location, company size) and how many people match. Then you export to CSV, push to HubSpot or send to lemlist, Instantly or Smartlead.

Leaving Seamless.AI with an export of names and companies? Upload the file to the Mobile Finder and pay 20 credits only for the mobiles it finds.

Where Scalelist is not the best choice

• Cheapest phone credit: on paper, Apollo.io (0.16 to 0.21 USD per number), Lusha (0.47 to 0.62 USD), and the bundled exports of Lead411 and ContactOut cost less per number than Scalelist’s 0.65 to 1.16 USD. Compare the cost per number that connects, not per credit.
• Flat pricing for heavy dialers: Swordfish AI and ContactOut sell flat plans. If your team stays inside their fair-use caps, a flat fee can beat any per-result price.
• Intent and account data: Scalelist does not sell intent data. ZoomInfo and Lead411’s annual plans do.
• One tool for everything: Scalelist has no sequencer or dialer. Apollo.io includes both.
• Security reviews: Scalelist operates under the GDPR and Singapore’s PDPA, with a Data Processing Agreement, Standard Contractual Clauses and a published sub-processor list. Scalelist holds no SOC 2 or ISO 27001 certification. Seamless.AI, ZoomInfo, Apollo.io, Lusha, RocketReach and ContactOut each publish one, which some procurement teams require.
• Email-only volume: if you never call, email-only tools are cheaper per email; see our Hunter.io alternatives.

How to choose a Seamless.AI alternative

Choose a Seamless.AI alternative by the one job you bought Seamless.AI for, then by how you want to pay for it.

1. Pull last quarter’s usage. Count the contacts you researched and how many phone numbers your reps actually dialed. That is the volume you are buying.
2. Price mobiles and emails separately. A phone costs 5 to 20 times an email on most credit plans (Lusha 5, Apollo.io 8, Scalelist 20), so price your real mix.
3. Ask how a miss is billed. Get the answer in writing, in the vendor’s words.
4. Check the term and the pool. Annual-only plans, credits that reset and pools that do not replenish change the real price more than the list price. Our guide to how credits and seats compare walks through each model.
5. Read the fair-use limits. ContactOut publishes its caps (2,000 email and 1,000 phone credits a month); Swordfish AI does not. Ask before you rely on “unlimited”.
6. Test before you sign. Run the same 100 contacts through your top two or three tools and count connected calls, not returned numbers.

For a head-to-head on cost per contact, read Scalelist vs Seamless.AI. More side-by-side comparisons are on the Scalelist blog.

FAQ

What is the best alternative to Seamless.AI?

It depends on what you need. For mobile numbers charged only when found, with a public price and no seats, Scalelist. For data plus sequences and a dialer, Apollo.io. For an enterprise platform with intent data, ZoomInfo. For flat-price phone lookups, Swordfish AI or ContactOut. For the lowest monthly bill, Lead411, RocketReach or Lusha, all under 50 USD a month.

Is there a cheaper alternative to Seamless.AI?

Seamless.AI does not publish paid prices, so there is no list price to beat. Most Seamless.AI alternatives do publish one: RocketReach from 27 USD a month billed yearly, Scalelist from 29 USD for 500 credits, Lusha from 37.45 USD, and Lead411 and Swordfish AI from 49 USD. ZoomInfo is the exception; it is quote-only too.

Which Seamless.AI alternative is best for cell phone numbers?

It depends on where you call and how you want to pay. In our own benchmark of 8 providers across 4 regions, Scalelist found phone numbers for 87% of a North America list and 73% to 85% elsewhere, while Apollo.io found 50% in North America and 8% in APAC. The other tools here were not in that test, so run your own 100 contacts.

Does Seamless.AI charge a credit when it finds nothing?

Not published. Seamless.AI says one credit researches one contact and returns its titles, emails and phone numbers, and it refunds the credit when a returned email does not work. Its pages do not say what happens when research finds no email or phone. Scalelist, Apollo.io and RocketReach all publish a no-charge rule for misses.

Can you pay for Seamless.AI monthly?

A monthly paid plan is not published. Seamless.AI sells Pro and Enterprise as annual credit packages through sales, and its free plan gives one user 50 credits that do not replenish. Scalelist, Apollo.io, Lusha, RocketReach, UpLead, Lead411, ContactOut and Swordfish AI all offer monthly billing on at least one plan.

How does Cognism compare with Seamless.AI?

Cognism is the closest match to how Seamless.AI sells: both are quote only. Cognism packages list 5 seats included and use 1 credit per revealed contact, with emails and mobiles not priced separately, much like Seamless.AI’s 1 credit per researched contact. Cognism sells phone-verified mobiles, screens numbers against Do Not Call registries including the US list, and says it is SOC 2 Type II and ISO 27001 certified and follows GDPR. Neither vendor publishes a price or a rule for contacts where nothing is found.

Is Scalelist a good Seamless.AI alternative?

For emails and mobile numbers, yes. Scalelist, an AI Lead Finder, returns verified work emails and mobile numbers from a one-sentence description, charges 20 credits per mobile and 1 per email only when found, and starts at 29 USD a month with no seats or annual contract. It does not include intent data, sequences or a dialer.

Sources

• Seamless.AI: Pricing
• Seamless.AI: Homepage
• Seamless.AI: Credit and license types
• Seamless.AI: Integrations
• Seamless.AI: security certification announcement
• Vendr: Seamless.AI
• Apollo.io: Pricing
• Apollo.io: How data requests work
• Apollo.io: Security
• ZoomInfo: How much does ZoomInfo cost
• ZoomInfo help center: Overview of credits
• ZoomInfo: Trust center
• Vendr: ZoomInfo pricing data
• Lusha: Pricing
• Lusha: How credits are counted
• Lusha: Trust center
• RocketReach: Pricing
• RocketReach: Security
• UpLead: Pricing
• UpLead: API documentation
• Lead411: Pricing
• ContactOut: Pricing
• ContactOut: Terms
• Swordfish AI: Pricing
• Swordfish AI: FAQ