If you’re a cost-sensitive developer needing strong AI capabilities, choose DeepSeek. Its low API pricing and open-weight models are excellent for self-hosting, making it a solid fit for teams that can manage their own infrastructure. However, if you have strict data residency requirements, or you prefer a more polished user experience, DeepSeek may not be the right fit.
On the other hand, if you’re a developer looking for a robust solution to send transactional emails, go with Resend. Its developer-first approach and excellent SDK make it ideal for SaaS applications. Just avoid it if you require advanced campaign management tools or if you're not technically inclined, as it's designed specifically for developers rather than marketers.