That's not been my experience. My experience with Astra (I use it at home writing Go and C) for coding has been fantastic. Opus 5.5 (I use it for work writing C#) seems faster than Opus 5, but it doesn't seem demonstrably better to my eyes and is still prone to word vomit.

Made the opposite experience. Astra was not good in writing go and c++ code. Had multiple OpenAi and Claude subscriptions and all our coworkers agreed. Switched back to Claude and the experience is so much better. Not vibe coding, but assisted coding with immediate feedback.

Same here. Astra has been the best thing I've seen. Astra on Low has been my favourite thing so far. Higher levels just mean more cruft, not useful.