# New models: Claude Fable 5, Claude Opus 4.8 and GLM

_Released June 17, 2026_

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.

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.