Just look at their talent churn. Execs last 3-6 months - Anonymous employee Toptal Employee Review

Professional and interested in quality work.

Not really a con, but more work waiting than hours allow.

Met some good dedicated employees and freelance workers.

Lack of any real industry solutions or capabilities since 100% of delivery services are freelance contractors. Model has been successful as providing staff augmentation to clients, but all intellectual capital and outcomes are owned by the clients or the freelancer. Toptal is simply a staffing platform broker who marks up the freelance talent. Great if you need a plumber, but not if you're planning to build a bathroom.