If you're a cost-sensitive API builder or part of a self-hosting team, choose DeepSeek. Its open-weight models offer high performance for a fraction of the cost, making it ideal for those prioritizing budget without sacrificing reasoning capabilities. However, if strict data residency is a concern, or you seek a consumer-grade polished product, this may not be suitable.
On the other hand, if you're an AI developer working on autonomous agents and appreciate a user-friendly interface, opt for Dify. Its support for various global LLMs and flexible publishing options can accelerate your project. Just be aware that it may require some technical knowledge for advanced features and has limited offline capabilities, which may not suit everyone.