Abstract API Does Everything.1Lookup Does It Better.
Abstract API offers dozens of generic APIs, but they're all basic implementations. 1Lookup covers three of those jobs, phone, email, and IP validation, and goes deeper on each. A phone lookup, for example, returns line type, carrier, DNC status, and a fraud score.
Specialized Expertise
Abstract API spreads across dozens of generic APIs with basic functionality. 1Lookup focuses exclusively on phone, email, and IP intelligence with deep expertise, advanced features, and carrier-grade accuracy that generic solutions can't match.
Performance Excellence
While Abstract API handles dozens of services with varying quality, 1Lookup delivers consistent sub-300ms response times and reliable uptime for our specialized validation services. Built for mission-critical applications.
Abstract API vs 1Lookup FAQ
Common questions about Abstract API and switching to 1Lookup
What is Abstract API?
Abstract API is a suite of individual, single-purpose data APIs covering tasks like email validation, phone validation, and IP geolocation, along with utilities such as company enrichment and more. Each capability is offered as its own separate API, with its own endpoint, key, and subscription. Developers typically use it when they need a quick, focused check for one specific type of data.
How much does Abstract API cost?
Abstract API uses a freemium, per-service pricing model: every API has its own free tier and its own paid plans that scale with request volume. As of publication, paid plans start at roughly $17-20 per month per service, so costs add up when you subscribe to several APIs at once. Because each capability is billed separately, teams that need multiple types of validation often find the combined total harder to predict.
What is the best Abstract API alternative?
The best alternative depends on how many data types you need to verify. If you only need one narrow check, Abstract API's single-purpose APIs work fine, but if you need phone, email, and IP validation together, 1Lookup is a strong option because it combines all three in one API with a single universal credit system. That unified approach means one integration and one balance instead of separate subscriptions per service, and there is a free trial so you can test it on your own data first.
How is 1Lookup different from Abstract API?
Abstract API splits phone, email, and IP into separate products, each with its own key, plan, and billing. 1Lookup delivers phone, email, and IP verification through one API and one universal credit system, with data drawn from FCC and carrier sources. It also adds carrier and HLR lookup, reverse lookup, and fraud and IP intelligence, so a single vendor and credit balance can cover several verification types.
Can I try 1Lookup for free?
Yes. 1Lookup offers a 7-day free trial so you can validate your own phone numbers, emails, and IP addresses before committing to a paid plan. Because every lookup type draws from the same universal credit balance, you can try different checks during the trial without managing separate plans.
Is Abstract API worth it in 2026?
Abstract API is a good fit for developers who want one vendor across email, phone, and IP with a cheap entry point: each API has a real free tier (100 email, 100 phone, and 1,000 IP checks per month) and paid plans start at $19/mo. The buying-shape catch is that every API is a separate subscription with its own quota, so covering all three channels means buying and managing multiple plans with no unified credit pool. Unused volume resets at the end of each billing period, overage is billed per call at rates not published on the pricing pages, and entry paid plans are capped at 3 requests per second for email and phone. If you would rather run phone, email, and IP checks against a single balance with per-lookup pricing, a unified API like 1Lookup removes the plan juggling.
Choose Specialized Excellence
Stop settling for generic solutions. Get phone, email, and IP intelligence with the accuracy and features your business deserves.
1Lookup vs Abstract API: the same criteria, side by side
Both products measured on identical criteria, with Abstract API’s numbers taken from its own published pricing.
1lookup1lookup.ioMulti-channel validation- Phone
- IP
abstractapi.comMulti-channel validation- Phone
- IP
- Abstract API · Starts at
- $19/mo for 5,000 email verifications/mo (annual billing discounted); phone validation starts at the same $19/mo for 5,000 checks; IP geolocation starts at $19/mo for 200,000 lookups
- 1Lookup: $99/mo for 20,000 credits ($4.95 per 1,000, down to $2.00 on Enterprise)
- Abstract API · Cheapest published per 1,000
- $1.00 at their largest published tier
- 1Lookup: $2.00 per 1,000 at 1,000,000 lookups/mo
- Abstract API · Free trial
- No separate time-limited trial; the per-API free tier serves as the trial (site FAQ: "try before you buy... each of our API's has a free tier"), no credit card required. Site FAQ also states free tiers may not be used in commercial projects
- 1Lookup: 7-day free trial on every plan: $5 of credits on Starter, $20 on Growth, Professional, and Enterprise (card required, nothing charged up front)
- Abstract API · Do credits expire?
- Not a purchased-credit model, plans are subscription quotas. Per the live FAQ, usage resets at the end of each billing period and calls over the plan limit incur a per-call overage fee, so unused allowance does not carry over
- 1Lookup: Unused monthly credits roll over for 3 months; separately purchased credits last 1 year
| Criteria |  1Lookup | |
|---|---|---|
| Contact-data coverage | EmailPhoneIP | EmailPhoneIP |
| Pricing model | Monthly plans with universal credits; core phone, email and IP lookups cost 1 credit, enrichment and intelligence products cost more | Per-API monthly or annual subscription. Each API, email validation, phone validation, IP geolocation, etc., is a separate subscription with its own free tier and paid plans; there is no shared credit pool across APIs. Paid pricing is presented as three feature tiers per API (Starter, Standard, Professional) each with a dropdown of fixed request volumes, price steps between fixed volume points, with no interpolation in between, and richer-data tiers cost more at the same volume. Annual billing saves ~10% (site toggle: 'Annually (save 10%)') and quotes the request allowance as a yearly pool. Usage over the plan limit is billed as a per-call overage fee and usage resets each billing period. |
| Starting price | $99/mo for 20,000 credits ($4.95 per 1,000, down to $2.00 on Enterprise) | $19/mo for 5,000 email verifications/mo (annual billing discounted); phone validation starts at the same $19/mo for 5,000 checks; IP geolocation starts at $19/mo for 200,000 lookups |
| Free option | Free single lookups via the online tools at 1lookup.io/tools, no account required | 100 email validations/mo free; 100 phone validations/mo free; 1,000 IP geolocation lookups/mo free, each per-API, no credit card required |
| Free trial | 7-day free trial on every plan: $5 of credits on Starter, $20 on Growth, Professional, and Enterprise (card required, nothing charged up front) | No separate time-limited trial; the per-API free tier serves as the trial (site FAQ: "try before you buy... each of our API's has a free tier"), no credit card required. Site FAQ also states free tiers may not be used in commercial projects |
| Do credits expire? | Unused monthly credits roll over for 3 months; separately purchased credits last 1 year | Not a purchased-credit model, plans are subscription quotas. Per the live FAQ, usage resets at the end of each billing period and calls over the plan limit incur a per-call overage fee, so unused allowance does not carry over |
Cost per 1,000: Abstract API and 1Lookup
Published rates only, drawn on one shared scale that starts at $0.
- 1Lookup rate card
- Abstract API published tiers
Abstract API, per published tier
5,000 email verifications/mo
$3.8050,000 email verifications/mo
$1.98150,000 email verifications/mo
$1.33500,000 email verifications/mo
$1.00
1Lookup, reference band (a range, not a bar from $0)
All 4 plans, 20,000 lookups/mo to 1,000,000 lookups/mo
Cost per 1,000
| Product | Volume tier | Price | Cost per 1,000 |
|---|---|---|---|
| Abstract API | 5,000 email verifications/mo | $19/mo (cheapest 'Starter' tier, 3 req/s) | $3.80 |
| Abstract API | 50,000 email verifications/mo | $99/mo (Starter tier, 25 req/s) | $1.98 |
| Abstract API | 150,000 email verifications/mo | $199/mo (Starter tier, 50 req/s) | $1.33 |
| Abstract API | 500,000 email verifications/mo | $499/mo (Starter tier, 100 req/s; in the page's pricing data but not selectable in the visible dropdown, which tops out at 150,000/mo) | $1.00 |
| 1Lookup | 20,000 lookups/mo | $99/mo (Starter) | $4.95 |
| 1Lookup | 85,000 lookups/mo | $299/mo (Growth) | $3.52 |
| 1Lookup | 250,000 lookups/mo | $799/mo (Professional) | $3.20 |
| 1Lookup | 1,000,000 lookups/mo | $1,999/mo (Enterprise) | $2.00 |
What Abstract API costs at volume
| Volume | Abstract API price | Per 1,000 |
|---|---|---|
| 5,000 email verifications/mo | $19/mo (cheapest 'Starter' tier, 3 req/s) | $3.80 |
| 50,000 email verifications/mo | $99/mo (Starter tier, 25 req/s) | $1.98 |
| 150,000 email verifications/mo | $199/mo (Starter tier, 50 req/s) | $1.33 |
| 500,000 email verifications/mo | $499/mo (Starter tier, 100 req/s; in the page's pricing data but not selectable in the visible dropdown, which tops out at 150,000/mo) | $1.00 |
For scale: 1Lookup’s plans work out to $4.95 per 1,000 lookups on Starter down to $2.00 per 1,000 on Enterprise, with every lookup type (phone, email, IP, spam) drawing from the same credits. Pricing models differ (subscription vs pay-as-you-go), so compare at your real monthly volume.
The same month, priced both ways
Pick one of Abstract API’s own published volumes. Their figure is their published price at that tier; ours is the cheapest plan on our rate card that covers it. Nothing here is interpolated.
1Lookup
$299/mo
The Growth plan, 85,000 credits a month at $3.52 per 1,000. Using 50,000 of them is 59% of the plan, so $5.98 per 1,000 effective.
Abstract API
$99
Their published price for “50,000 email verifications/mo”, at $1.98 per 1,000.
At 50,000 a month, Abstract API is $200 cheaper. Our smallest plan that covers this volume includes 85,000 credits, so the gap closes as you use more of it.
Abstract API rates as published on abstractapi.com, verified July 2026. Pricing models differ (a monthly plan is not a credit pack), so a like-for-like month depends on your real mix of lookups. Check their pricing page
Abstract API’s pricing page, as we read it
Every Abstract API figure above is taken from this page. It is reproduced here so you can check the numbers against the source instead of trusting our transcription of them, and the caption links straight to it. Prices change; the capture date says how fresh this is.
Before you sign: Abstract API and 1Lookup on the operational terms
The terms that decide what a year actually costs, rather than what the first month does. A blank means we could not verify it on either product’s published pages, not that the answer is nothing.
| Term | 1Lookup | Abstract API |
|---|---|---|
| Minimum commitment | None. Monthly plans with no contract and no minimum volume; cancel any time | No minimum term, but the advertised $17/month entry price is only available paid annually; month-to-month is $19/month. Plans auto-renew unless cancelled. |
| Going over your quota | — | Billed. "If you exceed those requests during the plan's term, you will be charged an additional fee... for each of those overages at the end of the billing cycle or when the overage amount reaches a defined threshold." The per-unit overage fee is only disclosed at enrollment, not on the pricing page. |
| API access | Included on every plan and during the free trial; there is no tier that unlocks it | API access is on every plan including Free (100 requests). Data fields are tier-gated rather than API access itself: Starter returns validation, location and carrier only; messaging requires Standard; risk and registration require Professional. |
| Rate limit | 1,000 requests per minute on standard accounts, with higher limits available on request | Scales with purchased volume, not with tier. Within Starter, Standard and Professional the rate is 3 requests/second at the entry volume, rising to 5, 10, 25, 50 and 100 requests/second at successively higher volumes (identical ladder on monthly and annual). Free is 3 requests/second. Enterprise is "Flexible requests / second". The API docs separately state free plans are limited to 1 request/second and return 429 when exceeded, which conflicts with the 3/second shown on the pricing page. |
| Uptime SLA | — | Conflicting. The product page advertises "99.99% uptime SLA" and Enterprise lists "Enhanced SLA & support"; the Terms of Use state "We aim to provide 99.9% uptime for the Site and its associated APIs, measured on a monthly basis," excluding beta services and free-tier usage. |
| Compliance | — | SOC 2 Type II and GDPR. Both are listed in the "What's included" list for the Enterprise plan only; SOC 2 Type II and "GDPR Ready" badges also appear as site-wide claims. |
| Support | Starter: Email Support; Growth: Priority Email & Chat Support; Professional: Chat + Live Meeting; Enterprise: Dedicated CSM | Conflicting. The product page advertises support "24/7 via email, chat, and phone"; the Terms of Use state "Support is offered via email at team@abstractapi.com during regular business hours, Monday through Friday, excluding U.S. holidays." A dedicated account manager is Enterprise-only. |
Abstract API fine print worth reading twice
Published terms that change what Abstract API costs or what you can do with it. Each one links to the Abstract API page it was read on, because a claim about somebody else’s contract should be checkable in one click.
The advertised $17/month price requires annual prepayment; the same entry volume billed monthly is $19/month.
Read it on Abstract API’s sitePhone risk and phone registration data are excluded from the Starter and Standard plans and require the Professional plan; messaging data requires Standard or above.
Read it on Abstract API’s siteExceeding the plan's request limit is charged as an additional per-request overage fee at the end of the billing cycle, at a rate disclosed only at enrollment.
Read it on Abstract API’s siteExceeding the plan limit by 40% or more triggers an automatic upgrade to the next higher-tier plan.
Read it on Abstract API’s siteSubscriptions automatically renew and are charged at then-current prices unless cancelled, and "All purchases are non-refundable."
Read it on Abstract API’s siteSOC 2, GDPR, commercial license and enhanced SLA and support are listed only under the Enterprise plan's included features.
Read it on Abstract API’s siteThe Terms of Use limit support to email during US business hours Monday to Friday, while the product page advertises 24/7 email, chat and phone support.
Read it on Abstract API’s siteThe Terms of Use state a 99.9% monthly uptime aim, lower than the 99.99% uptime SLA advertised on the product page, and the SLA does not apply to free-tier usage or beta services.
Read it on Abstract API’s site
Abstract API’s API reference
Their public developer documentation, so you can judge the integration before you start one.
1Lookup
Abstract API
Where Abstract API wins
- Broad multi-API suite under one account: email validation, phone validation, IP geolocation and more, so one vendor can cover email + phone + IP use cases
- Real free tiers with no credit card on every API (100 email, 100 phone, 1,000 IP lookups per month), plus a cheap self-serve entry point at $17-19/mo
- Email validation does real-time SMTP + MX + syntax + disposable + catch-all checks with bulk CSV upload alongside the real-time API; claims sub-300ms responses
- Compliance and scale posture: GDPR/CCPA-friendly positioning, SOC 2 and enhanced SLA on enterprise plans; IP API claims 99.9% uptime and sub-20ms responses across 4B+ IPv4/IPv6 addresses
Where 1Lookup wins
- Phone, email, and IP validation in one API with one universal credit balance
- Phone data refreshed daily from FCC and carrier sources
- Carrier/HLR lookup, line type, spam score, and reverse lookup included alongside validation
- Self-serve plans with no contracts and 3-month credit rollover
Abstract API pricing and product facts verified against abstractapi.com as of July 2026. Prices change; always confirm on the vendor’s site. 1Lookup numbers come from the live rate card.
Who this is for
A quick, honest read on which tool fits your use case.
Choose 1Lookup if: you want phone, email, and IP validation through one API, one key, and one universal credit balance, instead of separate single-purpose APIs.
Consider Abstract API instead if: you would rather pick individual, single-purpose APIs a la carte and only need one specific check at a time.