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Model selection

Supported models and switching

Updated Sep 2026

Available

GPT-5.5, GPT-5.6 Luna / Terra / Sol, GPT-6 Astra, Claude Fable 5.1 / Opus 5 / Opus 4.8 / Sonnet 5 / Haiku 4.5, Gemini 3.5 Flash / 3.1 Pro / 3 Flash, DeepSeek V4 Pro / Flash.

Switch

Change any time within a thread; unavailable models fall back to the default.