1Lookupvs

Customers.ai

The 5 best Customers.ai alternatives in 2026 start with 1Lookup, which prints its price per identified person, 2.5¢ on Starter, where Customers.ai starts from $269 a month on a 12-month contract.

1Lookup is the best Customers.ai alternative when you want a named person with a work email at a price you can read per person: $99 a month for 4,000 identified people, and nothing for a visitor it cannot identify. Opensend, SiteID, Bullseye and RB2B are the other picks here, each with the case where it fits better.

5 credits for each identified person, and nothing for a visitor who is not identified
A name, work email, LinkedIn profile URL, job title and company for each identified visitor, with a phone number on about 1 in 4, worldwide outside Europe, by API, webhook or CSV
Unused subscription credits roll over for up to 3 months, with no fee per seat

Prices verified October 2026 on each vendor’s own pricing page.

These are the reasons teams look beyond Customers.ai.

The price follows your Klaviyo profile count, not the visitors it identifies, so the cost of one identified visitor cannot be read from the page.
Gold fidelity and 250,000 or more profiles are priced on request.

1Lookup leads the shortlist, followed by the closest swaps.

1. 1LookupTop pick, our product

Best for a named person with a work email on every identified visit

Pick 1Lookup when you want the person behind a visit, not just the company: a name, work email, LinkedIn profile URL, job title and company for each identified visitor, and a phone number for about 1 in 4, anywhere outside Europe, billed per identified person and delivered by API, webhook or CSV. It starts with a 7-day free trial and a short access application.

Starting price: $99 a month for 4,000 identified people.
Free option: Visitors who are not identified are never billed; it starts with a 7-day free trial and a short access application.
Where it wins: 5 credits for each identified person, and nothing for a visitor who is not identified, so the bill follows the people you actually get.

The price of one identified person on each 1Lookup plan, falling from Starter to Enterprise because a larger plan buys credits at a lower price, while the person always costs the same number of credits

See Website Visitor ID

2. Opensend

Best for ecommerce stores that live in Klaviyo

Pick Opensend when you sell to consumers and want identified shoppers synced in real time into Klaviyo, Meta, Google and TikTok, with unused credit rolling over.

Starting price: $400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1.
Free option: A 14-day trial, advertised for $1.
The catch: Each tier is tied to a band of monthly site visitors, so a low-traffic site cannot buy a bigger tier.

1Lookup vs Opensend: full comparison

3. SiteID

Best for consumer identities with verified phones at agency scale

Pick SiteID when you need US consumer and B2B identities with a verified email, a phone and an NCOA-cleaned address, and you can commit to three months at $4,800 or more a month.

Starting price: $4,800 a month for 4,000 resolved identities (SMB, one pixel), on a three-month commitment.
Free option: None published
The catch: The smallest package is $4,800 a month for 4,000 identities, on a three-month commitment.

1Lookup vs SiteID: full comparison

4. Bullseye

Best for B2B and B2C modes with an API on every plan

Pick Bullseye when you identify consumers as well as businesses, or you want an API and webhooks on the smallest plan, and about 200 to 5,000 identified visitors a month covers you.

Starting price: $82.50 a month billed annually ($99 billed monthly) for about 200 identified visitors on Lite.
Free option: A 14-day trial with no card.
The catch: Overage, when you turn it on, costs $0.60 a credit on Lite, $0.55 on Starter, $0.48 on Growth, $0.34 on Scale and $0.24 on Expansion.

1Lookup vs Bullseye: full comparison

5. RB2B

Best for a free plan and a price printed at every volume

Pick RB2B when you want to start on a free plan that has no end date, or you need a price printed at every step up to 12,500 identified people a month, with Slack and Teams alerts on every plan.

Starting price: $79 a month for Starter (300 resolutions, LinkedIn URLs pushed to Slack or Teams, no email addresses); $149 a month for Pro, which adds business email addresses and all integrations (600 resolutions).
Free option: A Free plan with no end date: company-level identification and 150 resolutions a month, pushed to Slack, with no person-level identification and no email addresses.
The catch: Person-level identification is US only: the page says Company-Level ID is global on every plan, but contact-level (person) ID covers US visitors only.

Source: RB2B pricing page, rb2b.com/pricing, captured October 2026

1Lookup vs RB2B: full comparison

This table compares all 5 on the same criteria.

Product	Starting price	Free option
1Lookup	$99 a month for 4,000 identified people.	Visitors who are not identified are never billed; it starts with a 7-day free trial and a short access application.
Opensend	$400 a month billed annually ($500 billed monthly) for 2,000+ identities on Tier 1.	A 14-day trial, advertised for $1.
SiteID	$4,800 a month for 4,000 resolved identities (SMB, one pixel), on a three-month commitment.	None published
Bullseye	$82.50 a month billed annually ($99 billed monthly) for about 200 identified visitors on Lite.	A 14-day trial with no card.
RB2B	$79 a month for Starter (300 resolutions, LinkedIn URLs pushed to Slack or Teams, no email addresses); $149 a month for Pro, which adds business email addresses and all integrations (600 resolutions).	A Free plan with no end date: company-level identification and 150 resolutions a month, pushed to Slack, with no person-level identification and no email addresses.

Prices verified from each vendor’s public pricing page as of October 2026. Pricing models differ (subscriptions, pay-as-you-go credits, per-lookup metering), so compare at your real monthly volume; the full per-vendor volume tables are on each linked comparison page.

This is who should choose each one.

1Lookup: Best for a named person with a work email on every identified visit.
Opensend: Best for ecommerce stores that live in Klaviyo.
SiteID: Best for consumer identities with verified phones at agency scale.
Bullseye: Best for B2B and B2C modes with an API on every plan.
RB2B: Best for a free plan and a price printed at every volume.

This is how much work a switch takes.

On the 1Lookup side the move is one script on the pages where you want visitors identified and a place for the records to go: an API, a webhook or a CSV. Customers.ai is built for shoppers and 1Lookup for business visitors, so check that the people you want are at work when they visit before you move over. Run Customers.ai and Website Visitor ID side by side on the same pages for a month and compare the number of named people you get before you cancel anything.

How Website Visitor ID bills: every visit to your pages is seen, the visitors who can be named become identified people with a work email and are billed once each, and the visitors who cannot be named are dropped at no charge

The same identified-person record for a fictional visitor arriving three ways from Website Visitor ID: read by API, posted to your URL by webhook, or downloaded as a CSV file, with the same fields each time

These are the questions people ask about Customers.ai alternatives.

What is the best Customers.ai alternative?

1Lookup, if you want a named person with a work email for each identified visitor, from $99 a month for 4,000 identified people. Customers.ai stays the better fit if you run a Klaviyo store and want identified shoppers synced to Klaviyo and your ad accounts: Customers.ai is built around that, from $269 a month on a 12-month contract.

Is there a cheaper Customers.ai alternative?

Customers.ai prices by your Klaviyo profile count, not by identified visitors, so the two cannot be set side by side per person from its page: $299 a month at 1,000 profiles on a 6-month contract. 1Lookup Starter is $99 a month for 4,000 identified people.

Does Customers.ai identify people or companies?

People, for ecommerce: the X-Ray pixel resolves shoppers and syncs them to Klaviyo, ad accounts and CRMs. 1Lookup's Website Visitor ID identifies business visitors, with a work email and a LinkedIn profile.

What does 1Lookup return for each visitor?

Identified people come back by API, by webhook or in a CSV file, each with a name, a work email, a LinkedIn profile URL, a job title and a company, and a phone number with its do-not-call flag for about 1 in 4 people. Website Visitor ID identifies visitors worldwide outside Europe: every country except the European Union, Iceland, Liechtenstein, Norway, the United Kingdom and Switzerland. A visitor it cannot identify, wherever they are, costs no credits, because only identified people are billed.

Start your free trial and see Website Visitor ID on your own site.

Website Visitor ID requires approval: start the 7-day free trial, then send a short application about your website. It costs 5 credits for each identified person and nothing for a visitor it cannot identify.

Start free trial 1Lookup vs Customers.ai in depth