User Reports GPT-5.6 Luna Listed as Legacy Model in ChatGPT App

Illustrious-Bet-1368 · reddit · 2026-08-17

A Reddit user reports that GPT-5.6 Luna is listed under 'Legacy Models' in the ChatGPT Classic App, and the model picker is broken, always reverting to Sol Thinking. This may hint at OpenAI adjusting its model lineup, but it's not officially confirmed.

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