Hi All I have been using Fable 5 for a few hours now and I am low key not as impressed as I thoughti would be. It feels like if Opus 4.8 actually functioned better than opus 4.7, it would have been Fable 5. I had that expectation since until last year, their releases usually had that feeling of upgrade in experience. It definitely feels closer to GTP5.5 now. What I enjoyed about gpt5.5 in Codex was its ability to stay on track with the context even with just 272k, however in cursor with 1M context length, it would feel degraded after .5k while opus behaved better with the 1M context relatively. Opus 4.6 1M context was pretty decent for long context work but I am yet to feel a significant upgrade with Fable 5 (it does feel more stable with long context) from my limited use over the day . Looking forward to hearing from you all on how you found the experience different apart from all the flashy videos on YouTube. At least the benchmarks looked great and I am actually hoping the next gpt beats this and gives a fair competition! Also, I wish there was a way to test Fable on Codex harness, I think the Claudecode harness is good but Codex cli feels more reliable. Has anyone tried the comparison on a common harness? submitted by /u/Maleficent_Exam4291
Originally posted by u/Maleficent_Exam4291 on r/ClaudeCode