Choosing the right GitHub Copilot model for the job
One of the most common questions I get asked is: “Which AI model should I be using with GitHub Copilot?”
Open GitHub Copilot today and you are greeted with a dropdown menu that looks like a wine list. Sonnet? Gemini? Opus? GPT-5? 🤯 It used to be simple, but now it can be paralysing.
Which one is best? It depends on what you are trying to achieve, how complex the task is, and how you want to manage your credit usage.
My rule of thumb is simple:
- Start cheap to think and iterate.
- Pay for certainty when the blast radius is big.




