
OpenAI ライブストリーム
OpenAIがライブストリーム配信イベントを開催します。放送中に具体的な発表、新製品発表、またはデモンストレーションが明かされる予定です。
OpenAIが前回予告なしのライブストリームをやった時、GPT-4 Turboをドロップして、一晩で価格設定を完全に変えました

Many people have pointed out that ChatGPT 5.5 appears to be twice as expensive as 5.4 based on API pricing, which makes it look pricier than Opus 4.7. But the comparison is not that simple. GPT 5.5 is significantly more token-efficient in practice, which can make it faster and reduce the total cost of completing a task. When you compare it directly to Opus 4.7, the image here shows that Claude Opus 4.7 is still much more expensive than GPT 5.5, around 5 to 10 times more expensive on ARC-AGI-2.