How to use GPT-5.6
AI Today Summary
OpenAI has released the GPT-5.6 series, which includes three models—Luna, Terra, and Sol—each with multiple thinking levels and a new Ultra mode that enables advanced subagent functionality but consumes usage limits faster. The update merges ChatGPT's macOS and Codex apps into a combined app with a new ChatGPT Work mode and introduces a plugin for building hosted websites with optional login features. Users have observed different strengths among the models and noted recent usage limit resets as
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