The short answer
Direct hire or EOR — which should you use?
Use an EOR when you've already found the person and just need them employed compliantly in a country where you have no entity — it's a flat monthly fee. Use direct-hire recruiting when finding the right senior or AI engineer is the hard part — a recruiter sources and vets them, you employ them for one placement fee, and there's no ongoing markup. Many teams use both: a recruiter to find, an EOR to employ.
The confusion is understandable because the two overlap at the edges — but they answer different questions. An EOR (Employer of Record) is a compliance product: it becomes the legal employer of a person you selected, handling payroll, taxes and local law for a flat fee (~$500–700/month per employee). It does not recruit. A direct-hire recruiter is a sourcing product: it finds, vets and delivers the candidate, then steps out once you hire — you employ the person yourself.
So they're not really rivals; they're two links in the same chain. The real question is which part of 'get a great LatAm engineer legally working for me' is your bottleneck. If you already have the person, skip the recruiter — an EOR (or your own entity) is all you need. If the bottleneck is finding a senior engineer or AI specialist who'll still be great in month twelve, that's the recruiter's job, and you can still pair it with an EOR for the employment layer.
Where it gets expensive is the third option people conflate with 'EOR': a talent platform that bundles both and charges a permanent margin to keep your engineer on their books. Direct hire unbundles that — you pay once to find the engineer, then only the salary (plus a flat EOR fee if you need one). Over two years, unbundling is almost always cheaper than renting.