LLM-Paralysis When to Choose Which Large Language Model (LLM)

In 2025, almost every engineering org has gone through some version of this conversation, asking…

• Should we build this with AI?
• Which model do we use?
• What will it cost us in latency, money, and regret?

There is no shortage of smart models. But smart is not the same as usable. If you are responsible for program delivery, infrastructure planning, or just keeping everyone aligned between product and engineering, then choosing the right LLM is not a technical choice. It is an architectural one and as such, have tradeoffs to consider. They break differently. And they scale at very different costs.

This guide is here to help you understand not just what each model can do, but when to choose which one depending on the job in front of you.