https://x.com/ilyavaliant/status/1954548709930553566
Key difference: auto-Thinking ≠ manual GPT-5 Thinking.
When you pick Thinking manually, the system gives it a bigger “thinking budget.”
Auto-Thinking is shorter and faster — adaptive (and more cost-efficient) reasoning.
ChatGPTの設定の Data controls → Remote browser data に
"Remember site data between sessions" という設定が追加
Agentモードがセッションをまたがってcookieを再利用するようになる https://i.imgur.com/r967PQf.jpeg