Mixed
We switched from Sonnet 4.5 to Opus 4.5 as our default coding agent recently and we pay the price for the switch (3x the cost) but as the OP said, it is quite frankly amazing
_pdp_ on Hacker News
In the thread “Opus 4.5 is not the normal AI agent experience that I have had thus far”
Helped: Structured code and project setup that helps the agent perform well.
Got in the way: Fails on subtle design, best practices, and consistently uses wrong test command.
… Maybe by end of this year? We switched from Sonnet 4.5 to Opus 4.5 as our default coding agent recently and we pay the price for the switch (3x the cost) but as the OP said, it is quite frankly amazing. It does a pretty good job, especially, especially when your code and project is structured in a such a way that it helps the agent perform well. …