On software engineering I find it's generally close enough to Opus 5.5 where it's more situational and even personal preference / skills / prompting style on which is better.
Most importantly, while neither company are saints, I don't curse at OpenAI models for classifiers anywhere as much as Claude models.
Using 6.1 Terra for E2E workflow testing feels like cheating. I thought it would have all kinds of problems with the action space on certain steps, but it runs like a deterministic unit test.
I am convinced that OAI has the superior models for most practical scenarios. I've tried Claude recently and it makes me wonder if some of yall aren't actually massive trolls. It's genuinely not in the same room of performance if you place one foot outside junior programming or shiny blog posts about rewriting factorio to run on a ps2.
I find that logic similar to thinking both political parties are the same.
They are run by the same circle of people and I see more similarity than difference.
There is also an argument to be made that the political representatives are largely the same, despite glaring differences. They are largely part of the same oligarchy, the corruption - using gerrymandering to pick their voters instead of letting us having any real choice.