Pick any of them from the model picker, or leave the choice on Auto and let GPTree route each message. Try the same question on two of them in side-by-side branches to see which suits your work.
New models: Claude Fable 5, Claude Opus 4.8 and GLM
Claude Fable 5 and Claude Opus 4.8 join the model picker on Pro and Team, and GLM models from Z.ai are available on every plan.
See it in the app: What's new under Help walks you through each update.
Open in GPTree