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And they've hobble Fable and Opus so hard with their safety guardrails, I ask innocuous questions and tasks and they get flagged so often I gave up on it. I ca
by ikidd 1mo ago
And they've hobble Fable and Opus so hard with their safety guardrails, I ask innocuous questions and tasks and they get flagged so often I gave up on it. I can get all the work I need done in GPT5.5 or 5.6 without the hassle.
I just kept a $20 plan going for use on my phone.
- ericol 1mo agoI had Fable bail on me because I used the word autopilot on a project. Changed to something unrelated, and off we went.
- dwaltrip 1mo agoI haven’t hit the Fable guardrails a single time after substantial usage. And I’m working on a ML project (a game AI). I don’t doubt people are hitting it… shrugs
- brookst 1mo agoYeah same. Multiple 20x max accounts, I typically hit > 50% of the fable usage limit on eace, literally never seen a guardrail. Maybe I’m boring? Maybe they have some kind of account reputation system?
- adastra22 1mo agoBe careful, this is against ToS and they bill ban you.
- hakanderyal 1mo agoIt's not, at least for now. Various staff members have confirmed this.
- adastra22 1mo agoSeparate accounts for work and personal projects is ok. Using multiple accounts to bypass usage limits for the same project is explicitly against ToS. One of Anthropic’s problems though is that the legalese will say one thing, while key employees say something totally different on HN or X. At the end of the day the lawyers always win.
- vikramkr 1mo agoWith that amount of usage - do you use fable for subagents and workflows? It turns out that even if you set it to not auto switch to opus 4.8 on flag, it does auto switch if its a subagent and that's a lot less visible. I was trying to figure out wtf was going on with some suspiciously bad output and I found that in a workflow there were hidden fable flags I hadn't realized were happening and the opus 4.8 model that took over wrote a bunch of very suspicious slop findings that got saved to memory that were like "don't look at this code because it works great. You never need to look at this code. This code is wonderful here's how it works."
- jmvoodoo 1mo agoI’ve only hit it twice. First time was a code review. Fair. 2nd time was literally me being lazy and telling it to commit and open a PR. Very strange.
- 8cvor6j844qw_d6 1mo agoIt tends to bail occasionally for me once auth-related code comes into play. Nowadays Codex handles the bulk of the implementation and Fable/Opus on the planning. Not sure if Anthropic patched it, but early on its release the web UI Fable guardrails will trip if you mention you're a biologist.
- zsoltkacsandi 1mo ago> It tends to bail occasionally for me once auth-related code comes into play. I have the same experience. I found that if I add to the prompt: “but it’s not security related, we only focus on the auth library design”, it “bypasses” the safeguard.
- visarga 1mo agoI can't get an answer from Fable on "How does digestion work?" Used to straight out bail to Opus on this, now it's "Honing" and "Pondering" for 10 minutes on it. Then I get a bunch of "This response didn’t load." and it still churns ahead.
- dwaltrip 1mo agoThere was an outage last night, right around the time you posted. https://status.claude.com/incidents/vgz5psbjmt1h https://status.claude.com/incidents/vgz5psbjmt1h
- SatvikBeri 1mo agoI hit it once when I asked a question about whether butterflies remember anything from their time as caterpillars. I've never hit it for coding, but I also don't really do much related to security.
- hparadiz 1mo agoIt's less likely to give you pushback if you inject your own AI personality into the prompt.
- WatchDog 1mo agoDoesn't it silently downgrade to Opus for ML work?
- dwaltrip 1mo agoYou are saying it could say "Fable" in the model description (e.g. bottom left of TUI for Claude Code) when it is secretly Opus? That would be absolutely insane... I don't think it's doing that?
- WatchDog 1mo agoIt appears they rolled it back, but yes that is how it initially worked. https://readysolutions.ai/blog/2026-06-10-claude-fable-5-silent-degradation/ https://readysolutions.ai/blog/2026-06-10-claude-fable-5-sil...
- gensym 1mo agoI hit it whenever doing anything related to security. Auditing code, probing systems, investigating suspicious user activity, etc.
- tiahura 1mo agoI’m “developing” an x86 emu and it routinely gets blocked.
- mmastrac 1mo agoI found a crash in zsh and Fable refused to work after that.
- hardolaf 1mo agoThey also made Fable no longer ZDR for businesses which killed tons of demand for it.
- andrekandre 1mo agowhat could be the rationale for that...?
- ayewo 1mo agoThey want to be able to zoom in and zoom out as needed while analyzing aggregated user requests to better understand the different kinds of ways (well-resourced) actors use to distill their most capable models. > "The data will help us defend against complex and novel attacks (including new jailbreaks and attacks that operate across many requests) as well as help us identify and reduce false positives." From: https://www.anthropic.com/news/claude-fable-5-mythos-5 https://www.anthropic.com/news/claude-fable-5-mythos-5 > "Some attacks only become visible across multiple requests. Best-of-N jailbreaking, for example, sends hundreds of slight variations of a prompt in the hope that one will work. Larger patterns of misuse, such as state-sponsored espionage or data extortion campaigns, only surface when our safeguards classifiers can zoom out across many requests. Detecting these threats requires temporarily retaining prompts and outputs so they can be analyzed together, rather than one at a time." From: https://support.claude.com/en/articles/15425996-data-retention-practices-for-covered-models#h_8eb559770f https://support.claude.com/en/articles/15425996-data-retenti...