Early this morning, I saw the news that GPT 5.6 had launched last night and that Codex and ChatGPT were being combined.
The GPT 5.6 announcement made sense to me. But I did not quite understand what it meant for Codex and ChatGPT to become one.
So I opened Codex, updated it, and got ready to try GPT 5.6. Codex updates almost every day, so I was not expecting anything unusual. But after updating, I noticed that the Codex icon had changed and the app was now called ChatGPT. Looking more closely, I found it had gained quite a few capabilities compared with the old Codex.
- Chat: The web version of ChatGPT is now integrated into the app, including my existing ChatGPT conversation history.
- Code editing: It is no longer limited to previewing code; you can now edit code manually. It is a small change, but genuinely convenient.
As for GPT 5.6, I have been using it throughout the day, and it is noticeably better than 5.5—both for coding and for other work.
GPT 5.6 now comes in three variants: Luna, Terra, and Sol. I have used all three quite a bit today. My impression is that Luna is better suited to automation tasks, Terra to everyday work and development, and Sol to more complex work and development.
独立产品人日记
Notes on indie products, AI tools, growth, and engineering.
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