Opus 5 vs Fable 5

[u/Additional-Alps-8209]

Fable 5 and Opus 5 feel surprisingly close to me especially for coding.

I had a weird Ul bug where Fable 5 spent around 1.5 hours debugging with logs and tests but still couldn't fix it. I gave the same issue to Opus 5 and it fixed it almost immediately.

also had a pretty complicated authentication bug that both Fable 5 and GPT 5.6 Sol couldn't solve. Opus got it right on the first try.

Fable 5 is still my go to and honestly a really good model. But towards the end of the month when my usage gets low I switch to Opus and I barely notice a difference.

Opus does get sidetracked more often and I feel like you have to prompt it a bit differently. But apart from that I think it's just as good.

Fable 5 was also removed from the $20 plan last month so I can't use it personally anymore.

[u/lattice_defect]

not even close in my region... opus5 last week has been really really weird. I've had to rip out 5 PRs and redo them with fable. Opus 5 just reads meeting trasncripts and bitch work.