Flexible hours: YES

The Custom GPT Builder side hustle typically offers great flexibility in setting your own schedule. Since you are creating custom GPT models for clients, you can generally work on projects when it suits you best. Online sources like Reddit and niche forums often mention the freedom to choose your hours as a major benefit of this opportunity. However, some users point out that there may be occasional time-sensitive client demands that could require more immediate attention. Overall, the general consensus is that the flexibility advertised is largely true, with the occasional need to accommodate client timelines.