What is GPT-6.1 Sol? An explanation of its features, pricing, how to use it in Codex, and how to choose between it and Astra!｜kazu@生成AI×教育 ... - note（ノート）

OpenAI announced GPT-6.1 Sol.It aims for performance close to GPT-6 Astra while emphasizing a balance with costs that are ...

[Latest News] You can now build your own app inside ChatGPT! What are plugin extensions (sidebar, panel, file viewer)? An explanation of what you can do

Hello, this is Duke.At OpenAI's developer event "DevDay 2026" (local time September 29), plugin extensions were ...