From the source
Amp changed the Dial feature: when a ChatGPT subscription is linked, the low, medium, and high modes now exclusively use
OpenAI models (GPT-5.6 Terra and GPT-5.6 Sol), billed to the subscription.
- Previously, these modes used a mix of models including GLM-5.2, Claude Fable, and Haiku, which were billed to Amp credits.
- The ultra mode remains unchanged, running Claude Fable on credits.
