I'm very unimpressed after 6 hours of use.

I'm having it rewrite an old system, and it keeps sweeping known bugs and incompatibilities in its new implementation under the rug, seemingly with the hope I won't find them. It also has a tendency to do about 50% of what I specify in the prompt and call it a day, and respond with "Here's what I did", without mentioning all the things that I requested that it did not do, not even as a TODO.

I may try running the same exercise with Opus 5.5 too, but so far I'm seeing it take shortcuts that I don't believe any of the other SOTA models would have.

Frankly, so far this model feels a bit malicious.