Claude Opus 4.6 has definitely been nerfed in the last few days, especially in the Claude app.

Here's a comparison with Claude Code in Telegram, where I manually set Max reasoning effort.

(I hate that Anthropic does this regularly and keeps pretending it doesn't.)

@viticci At this point, I only use Opus 4.6 when I need to search the web (since its web search tool, and generally its tool calling, are markedly improved). Opus 4.5 is such a great model *and* doesn’t get nerfed by Anthropic whenever they want.