Large video game companies use outsourcing services to create 3D models and get other game art services. This allows them to significantly speed up the game development process and eliminates the need to hire huge staff of in-house artists, developers and animators. Game art outsourcing companies have their own specialists who will quickly and efficiently complete any tasks.
Each game art outsourcing studio has its own specialization and areas in which it has a competitive advantage. Therefore, large video game companies outsource 3D modeling to some contractors, animation to other companies, and level design to completely different studios. By delegating authority, they get the best from each outsourcing partner and benefit from both quality and cost.