Proofwire vs AbstractAPI
AbstractAPI is a catalogue rather than a specialist: dozens of small APIs, of which validation is a few. That breadth is genuinely useful when you need three unrelated things quickly. It shows in the depth of any one of them, and in what the bill looks like once you use more than one.
How to read this page. 9 dimensions compared: we come out ahead on 6, behind on 1. Every claim about AbstractAPI links to their own documentation or to public reviews. We have not run AbstractAPI through our own benchmark, so you will not find a head-to-head accuracy number here — comparing our measurement to someone else's would not be a comparison.
Choose AbstractAPI if
- You need several unrelated APIs - validation, geolocation, screenshots, exchange rates - and one vendor for all of them saves you real time.
- You are validating format only, and a shallow answer is genuinely all your use case requires.
- You want the simplest possible integration and are not going to look at the response beyond one field.
Choose Proofwire if
- Validation is not a side quest: a wrong verdict costs you a bounce, a wasted dial or a fraudulent signup.
- You are stacking more than one of their APIs and the monthly total has started to look odd.
- Your traffic is spiky and you have started seeing 429s at the worst moments.
Side by side
| Dimension | AbstractAPI | Proofwire | Source |
|---|---|---|---|
| Independent accuracy measurement | 76% in a 2026 third-party benchmark of ten phone validation tools | Not in that benchmark. Ours is published with its scope and reproduces with one command. | Cleanlist, 2026 phone validation benchmark |
| HLR / live network check | None | Tier-2 carrier probe, run only when cheaper tiers leave the verdict uncertain | Cleanlist, 2026 phone validation benchmark |
| Data depth | Described as not matching dedicated providers | Three subjects done deeply rather than thirty done shallowly | Cleanlist, 2026 phone validation benchmark |
| Breadth of catalogue | Dozens of APIs: geolocation, screenshots, exchange rates, company data and more | Phone, email, IP. Nothing else, and no plans to add anything else. | — |
| Cost when stacking services | Priced per API. Email plus IP plus Company on standard tiers has been reported at roughly $173/month before overages. | One balance across all three subjects. No per-product subscription. | Supergood API Report Card |
| Rate limits on entry plans | Reported at 3 requests/second on cheaper Email Validation plans, with 429s during traffic spikes | 50/second sustained on the €29 plan, with a burst allowance of 200 | Supergood API Report Card |
| Billing predictability | Overage charges are the most-cited complaint across public reviews | Hard spend cap checked before each request. Past the ceiling requests are refused, not billed. | Supergood API Report Card |
| Free tier | 250 requests a month | 100 credits with no time limit, plus 40 tools that are free permanently and need no account | Cleanlist, 2026 phone validation benchmark |
| Evidence behind a verdict | Structured fields | Every signal, its weight, its age, and which providers were skipped and why | — |
A catalogue and a specialist are different products
AbstractAPI sells the convenience of one account for many small jobs, and that convenience is real. If you need to validate an email, look up an IP and take a screenshot, having those behind one login genuinely saves an afternoon. We are the opposite bet: three subjects, done to the depth where the answer holds up when something depends on it. Neither is wrong, but they suit different problems and the mistake is buying one when you needed the other.
Where per-API pricing quietly compounds
Each AbstractAPI product carries its own subscription. One is inexpensive. Public reviews put Email plus IP plus Company on standard tiers at roughly $173 a month before overages - which is a different conversation from the entry price that got you in. Our credits are one balance spanning phone, email and IP, so adding a second subject changes what you spend, not what you subscribe to.
Three requests a second is a limit you will meet
The reported 3 req/s ceiling on cheaper Email Validation plans sounds generous until a marketing campaign lands and every signup arrives in the same ten minutes. That is exactly when you least want 429s. Selling a tier that fails under the traffic it was bought for is a plan boundary drawn in the wrong place, which is why our entry plan sustains 50/second with a burst allowance of 200.
On billing surprises
Unexpected overage charges are the most-cited complaint about AbstractAPI in public reviews. We are not going to characterise their intent - the link is above and you can read it yourself. What we did was make the failure mode impossible on our side: you set a monthly ceiling, and past it requests are refused with a clear error rather than served and invoiced. A bill can never exceed a number you chose.
Questions
Have you benchmarked AbstractAPI against your own dataset?
No. The 76% figure comes from an independent 2026 benchmark, cited above. We publish our own results on our own dataset with the scope stated, and do not claim a head-to-head number we have not measured.
I only use their email validation. Is the pricing point relevant?
Less so. The per-API cost compounds when you stack products; if you use exactly one, the comparison comes down to depth and rate limits instead.
Can I use both?
Reasonably. Some teams keep a catalogue vendor for miscellaneous jobs and use a specialist where a wrong answer costs money. Our free tools need no account, so testing that split costs nothing.
Check it yourself
Do not take our word for any of this. Run our public benchmark with npm run bench, read the labelled dataset it ships with, or try the free tools without an account.
Think something here is unfair or out of date? Tell us and we will correct it.