The more I think about it the more disappointed I am with this release.

For Anthropic's IPO, I expected a larger version of Opus 5.5 with great capabilities.

This isn't that. It's barely better at all, to the point where it's likely not even worth using with the speed and cost trade off.

I thought the Opus 5.5 improvements would scale to a larger model, clearly this hasn't happened. Scaling it up brought only marginal improvement.

It's even still making the same dumb errors as Opus 5.5, such as forgetting to pass the flag to run only the fast tests and waiting 1h, or randomly stopping to ask me if it should first implement A or B, when both are required.

Not a great story for their IPO..