I think Opus 5.5 is already good enough that we don’t really need Fable 5.1 for most things. There is a mental alignment cost when humans interact with AI. Fable’s way of expressing things is often less grounded and less close to how normal people think and communicate. So even if its reasoning is strong, I need to spend extra mental energy understanding what it is trying to say, aligning with its way of thinking, and translating that back into my own mental model. Opus 5.5 doesn’t have this problem as much. Its explanations are already clear enough and easy enough to understand. Its reasoning is good enough. Its actual ability to get things done is also good enough. At some point, being slightly smarter stops mattering if communicating with the model itself requires more effort. And Opus is cheaper and faster at the same time. So for me, the equation has changed: Opus 5.5 > Fable 5.1 Not necessarily because Opus is more intelligent in every benchmark, but because the overall human plus AI experience is better. submitted by /u/takeurhand
Originally posted by u/takeurhand on r/ClaudeCode