The Two Business Models
Understanding how each company makes money clarifies which one fits your situation.
- Toptal: Founded in 2010, operates as a global freelance marketplace. Publicly states that it accepts the top 3 percent of applicants. Revenue comes from a markup on billable hours. Engagements are typically hourly or project based, with rates commonly cited in the $60 to $200+ per hour range depending on role and seniority.
- South: LatAm-only placement firm focused on full-time hires. Places engineers into salaried roles with US companies. Revenue comes from a placement fee on top of salary, structured for long-term employment rather than hours billed.
Those two models serve different buyers, and neither is universally right.
Geography and Time Zones
Toptal's talent is global. You can find engineers in nearly any country, which means you can also find engineers in nearly any time zone. If you want nearshore coverage you can filter for it, but the marketplace does not guarantee it and the available candidates in a given specialty may not cluster where you want.
South operates exclusively in Latin America. Every engineer placed overlaps US business hours by 5 to 8 hours. That is a structural guarantee, not a search filter.
- Toptal: Global pool, time zone depends on who is available
- South: LatAm only, time zone alignment built in
If your team runs synchronous standups with US product and design, the structural overlap matters.
AI Specialization
This is where the biggest practical difference shows up.
Toptal is a generalist marketplace. It covers web development, mobile, design, finance, project management, and many other disciplines. AI and ML are represented, but the vetting process is not AI-specific. You are searching a large pool and filtering for AI skills, which works but requires you to do the specialist evaluation yourself or trust a generalist screen.
South vets specifically for AI engineering. The assessment covers production LLM work, RAG system design, eval methodology, agent architectures, fine-tuning, and MLOps. Every candidate that gets to a customer interview has been screened against an AI-specific rubric.
"A generalist marketplace can surface an AI engineer. A specialist firm surfaces an AI engineer who has already been evaluated by someone who knows what good looks like."
The right choice depends on whether you want broad access and do your own specialist filtering, or pre-filtered AI specialists.
Engagement Structure
Toptal's bread and butter is short-to-medium term engagements. A six-week integration project, a three-month model build, augmentation during a crunch. Rates are billable hours, and the contract is typically with Toptal rather than directly with the engineer. Onboarding is fast because the talent is already in the marketplace.
South places full-time employees, usually with the intent of multi-year tenure. The engineer becomes part of your team with normal reporting lines, your benefits, your equity, your performance reviews. Placement fees are one-time rather than recurring hourly markups.
- Toptal: Billable hours, project-based, fast ramp, easy to scale down
- South: Full-time salary plus placement fee, long-term embed, part of your team
Pricing Comparison
Exact numbers depend heavily on seniority and specialization, but here is the shape.
For a senior AI engineer, Toptal rates commonly fall in the $100 to $200+ per hour range based on public reporting and user discussions. At $150 per hour times 40 hours per week times 50 weeks, that is $300,000 per year in billable hours alone, before any platform overhead.
South places senior AI engineers in LatAm at salary ranges of roughly $90k to $150k depending on level and country, plus a placement fee. Fully loaded, the annual cost sits well below hourly freelance equivalents once the engagement runs past a quarter or two.
The breakeven math generally favors freelance for engagements under three months and full-time placement for anything longer.
Quality Consistency
Toptal's marketplace model means quality varies. The top 3 percent claim applies to the overall acceptance funnel, but within the accepted pool there is a wide range of specializations, experience levels, and domain depth. Finding the right person requires interviewing and filtering.
South's smaller, specialist pool means every candidate presented has been vetted against the same AI rubric. The tradeoff is less breadth. You are not going to find a Solidity engineer or a Figma designer on South. You will find AI engineers, vetted for AI.
When to Choose Each
A practical framework.
Choose Toptal when:
- You need someone for a defined short term project (weeks to a few months)
- You want access to a broad global pool including non-AI skills
- You need to ramp up quickly and ramp down just as quickly
- Billable hour engagements fit your budgeting and procurement
- You have internal capacity to do AI-specific technical screening
Choose South when:
- You are hiring a full-time AI engineer to embed in your team
- Time zone overlap with US hours is a requirement
- You want AI-specialist vetting done before the interview
- You plan to retain the engineer for a year or more
- You prefer salary plus placement over hourly markup
Both companies exist because both problems are real. The honest recommendation is to match the hiring motion to the work.
Key Takeaways
- Toptal is a global freelance marketplace; South is a LatAm focused full-time placement firm.
- Toptal is priced per hour; South is priced as salary plus a placement fee.
- Toptal offers broad skill coverage; South offers AI specialist vetting.
- LatAm time zone overlap is guaranteed with South and a filter with Toptal.
- Choose Toptal for short projects, South for embedded long-term AI hires.
Frequently Asked Questions
Can I hire full-time through Toptal?
Toptal does offer a full-time placement option, but its core model and pricing are built around hourly freelance engagements. Full-time placements exist but are not the default motion.
Does South do contract work?
South focuses on full-time salaried placements in Latin America. If you need a short-term freelance contractor, a marketplace like Toptal is usually a better fit.
How does AI vetting differ?
Toptal's general vetting covers coding ability, communication, and problem solving. South's process layers in AI-specific evaluation including production LLM experience, RAG and eval design, and agent system architecture.
Which is cheaper for a year-long engagement?
For anything beyond a quarter or two, full-time placement models like South typically cost less than hourly freelance rates when fully loaded. Exact math depends on seniority.
Can I use both?
Yes. Many teams use a marketplace for short-term augmentation and a placement firm for core full-time hires. The two models do not conflict.
Hire AI Talent with South
South places full-time AI engineers from Latin America into US teams, with specialist vetting and time zone overlap built in. If you are hiring for an embedded role rather than a contract, start here.
