Original Reddit post

I’m trying to understand the real differences between Claude Opus 4.6 when used with low effort and Claude Sonnet 4.5 specifically for coding work. For tasks like writing functions, refactoring code, debugging, and reasoning through non trivial logic, is Opus 4.6 low effort comparable to Sonnet 4.5, or is it noticeably better or worse in output quality? How does the cost compare in practice for coding workloads, does Opus 4.6 low effort usually end up costing more or less than Sonnet 4.5 for similar amounts of code and iterations? For people who have used both mainly for programming, what differences did you actually notice? submitted by /u/Esteta_

Originally posted by u/Esteta_ on r/ClaudeCode