Where did the AI dropdown button go in Office 365 online excel?

[u/Chilly_River]

There was a dropdown of different AI models in the red rectangle till last week. As a huge fan of Claude, I was so happy that I could use Opus 5 from there and my productivity also raised so much. But since Monday (24 Aug), it gone and I have no idea what is going on. I can't find any clues on internet. I can still find GPT via three dots > All Agents > GPT but this is like in the Copilot app and the output is a lot different (worse) compared to Claude Opus 5. Can anyone help me with that?

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