Which ChatGPT model should you actually use?
By jaspinall · September 20, 2026 · Curated by George's Blog
Which ChatGPT model should you actually use?
Here's the plain English breakdown.
1. Astra. The flagship. Best for coding, dev work, and executing tasks itself. When you want the work done, not just talked about, this is the one.
2. Sol. The proven pick for complex work. Deep reasoning, planning, research. When the answer has to be right.
3. Terra. The balanced everyday tier. Built for high-volume business work like support replies, docs, and internal tools.
4. Luna. The everyday one. Quick questions, drafts, summaries. This is what free ChatGPT runs on now.
Save this for the next time you're staring at the model picker.