How to Pick the Right AI Model for Your Swift App (Without Losing Your Mind)

Learn how to choose, test, and optimize the right language model for your Swift app by comparing performance, pricing, and real-world results.

You’re a Swift developer, excited to build an AI-powered app. But there’s one big question: which Large Language Model (LLM) should you use? There are so many to choose from! Even just within OpenAI, you’ve got GPT-4.5, GPT-4o, GPT-4o Mini, and the mysterious “o1-pro”. Then you’ve got Meta’s new Llama models, Anthropic’s Claude series, DeepSeek, Qwen… the list keeps growing. It can feel like a never-ending scroll of options. So how do you pick the right one for your app?