Is it? Or is it the task you're trying to do? Opus 4.6 has been staggeringly good for me this last week, both inside Claude Code and through Antigravity until I used up my quota.
And right now, I have to remind it every time that the MCP exists, and even then it cannot manage to find a routing bug I have with Sveltekit.
Did a lot of Sveltekit with Opus in the past, and I didn't have to think about it, Opus always got it right easily. Until now