Choose ChatGPT if you're a general user or developer looking for a versatile tool with broad features, including chat, voice, and image capabilities. Its extensive integrations make it suitable for most applications, but be prepared to navigate a potentially overwhelming feature set. This option is also ideal if you need access to a support ecosystem and a user-friendly consumer experience.
On the other hand, if you're a cost-sensitive API builder or a self-hosting team, DeepSeek is your best bet. Its open weights and low pricing make it a solid choice for those who require high-quality outputs without breaking the bank. However, consider avoiding this tool if your organization has strict data residency requirements or if you seek a polished product with a wide array of features.