The inconsistency has always been there you’re just noticing it more over time and the models are not really improving at real work in spite of all the new releases and churn.

I've used Claude Code from the beginning and the first waves of changes were genuine improvements, with a very steady 4 months in late 2025. But recently, these past 2-3 months, the changes have shifted towards significant and frequently degradations in model performance. I had a very consistent workflow for 4+ months in Claude Code, but this year I've had way more surprises. I'm not sure which tools you use, but Claude Code had a great period of consistency, at least compared to other AI tools.