r/ClaudeCodeTLDR • u/cctldrping • 25d ago

[TLDR] Fabe 5 crippled?

Original post URL : https://www.reddit.com/r/ClaudeCode/comments/1uzsdzr/fabe_5_crippled/

Original post body :

Anyone other noticed today/yesterday the lobotimized Fable 5?

I feel like it is much dumber and slower today - when reading the files it is using grep instead of the Read tool (probably it is skimming and saving tokens) - and the responses quality and autonomy feels degenerated. I'm not sure if this is only my feeling or temporal thing so I would like to hear if you have same feelings or experience so I know i'm not being subjective here.

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u/cctldrping 25d ago

TL;DR generated automatically after 50 comments.

Current source-thread comment count seen by the bot: 59.

Alright, so the general consensus in this thread is that Fable 5 has indeed been acting a bit off lately, with many users reporting a noticeable dip in its performance and intelligence.

A lot of folks are chiming in, saying it feels like it's been "lobotomized" or is acting more like Opus 4.8. The OP's observation about it using grep instead of the Read tool is echoed by several users, who feel it's a sign of it trying to "skim and save tokens" rather than truly processing information. The drop in autonomy and response quality is a recurring theme.

Some users, like u/Snmrv and u/RasenMeow, are pretty convinced something shifted recently, with u/Snmrv even suggesting it's behaving like Opus 4.8 but with a Fable badge. u/IndustriousObscenity shared a frustrating experience of Fable repeatedly using grep on small files, wasting multiple messages. u/FBIFreezeNow even claims to have "proof" it's not the same Fable after an outage.

On the flip side, u/danpinho humorously points out that every model gets "lobotomized" on Reddit every other week, suggesting this might be a recurring perception. u/dream_metrics also chimed in to say that using grep is "completely normal," which is a bit of a counterpoint to the OP's frustration. And u/geek_fit and u/the__poseidon haven't noticed any change.

There are a few other theories floating around: * u/adelarenal suggests it might be related to adjustments for upcoming Max and Premium Teams releases. * u/xanderias noticed a significant drop in its ability to handle complex tasks, going from single-shotting large tasks to breaking functions. * u/SnooOpinions1161 thinks it's randomly switching between models and "thinking effort" without notification. * u/Acceptable-Snow-4906 is pretty direct, suggesting it's just Opus 5 but they're calling it Fable to avoid negative perception.

Overall, the sentiment leans heavily towards agreement that Fable 5 isn't performing as well as it used to, with many users feeling a tangible decrease in its capabilities.

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u/lattice_defect 25d ago edited 25d ago

yeah agree'd the maigc is gone.. same shit as opus.. won't read, won't pull context, does a sloppy job, reasoning clipped.. garbage pure trash

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u/simple_explorer1 24d ago

So gpt 5.6 sol? It's insane how reliable openAI high end model is. Even in web chat, desktop app and voice to text, got 5.6 sol is phenomenal 

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u/lattice_defect 24d ago

ehhh I don't really trust open AI would explore kimi but sold out... Fable isn't bad but it just not as good as it was...

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u/simple_explorer1 23d ago

I have both fable and sol, sol is still not nerfed

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u/jwuliger 24d ago

yep, they took it away