Knock2 starts at $199 a month for 600 identified people, and 1Lookup starts at $99 a month for 4,000 identified people.

If you want auto-prospecting in the same tool as identification, Knock2 is built for that: Knock2 includes contact and account identification and auto-prospecting on every plan, and annual billing takes two months off. If you want the individual person as data, by API, webhook or CSV, at 5 credits per person on a balance that also pays for phone, email and IP lookups, 1Lookup's Website Visitor ID is the alternative. Website Visitor ID requires approval. Start the 7-day free trial, then send the short application inside your account: we review each website before we switch on visitor identification.

Plans by contacts identified a month, from 600 to 7,500, with the full platform on every plan. Annual billing gives two months free, and above 7,500 contacts the price is set with sales. A 7-day free trial of the full platform. Checked October 2026 on knock2.ai.

5 credits for each identified person, and nothing for a visitor who is not identified. Starter ($99 a month) covers up to 4,000 identified people at $0.02475 each, Growth ($299 a month) covers up to 17,000 identified people at $0.0176 each, Professional ($799 a month) covers up to 50,000 identified people at $0.016 each and Enterprise ($1,999 a month) covers up to 200,000 identified people at $0.01 each. Credits come from a plan that also pays for every other 1Lookup product, and unused subscription credits roll over for up to 3 months.

On month-to-month billing 1Lookup costs less at 1 to 7,500 people a month. Knock2 never costs less than a 1Lookup plan in its published range. At 600 identified people a month, 1Lookup Starter costs $99 and Knock2 600 contacts costs $199. At 2,500 identified people a month, 1Lookup Starter costs $99 and Knock2 2,500 contacts costs $499.

Both: Knock2 identifies US contacts and the accounts they work for. A contact uses 6 credits from the monthly pool and an account 1, and its plans are named by the contacts they cover.

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. Knock2's own page says "Person-level identification runs on US traffic only, by design." (https://www.knock2.ai/pricing), so it names US visitors only, where 1Lookup names visitors worldwide outside Europe.

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.

1Lookup subscription credits roll over for up to 3 months, so a quiet month does not waste a plan. On Knock2: credits reset every month.

Add one script to the pages where you want visitors identified, and pick where the people go: an API, a webhook or a CSV. Knock2 also auto-prospects from the accounts it sees, so decide whether you still need that before you cancel, and send 1Lookup's records to the place your prospects go today. Run Knock2 and Website Visitor ID side by side for a month and compare the named people you get before you cancel anything.

Yes, if you want account identification and auto-prospecting in the same plan as contact identification, and you are happy to bill annually for two months free. If you want a named person with a work email for each identified visitor, from $99 a month for 4,000 identified people, compare 1Lookup.