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Claude Fable 5

anthropic.com

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Re: Claude Fable 5

#91

Post by clementg »

eggbrain wrote: post #24

For those of us on subscription plans: * From today through June 22, Fable 5 is included on Pro, Max, Team, and seat-based Enterprise plans at no extra cost. * On June 23, we’ll remove Fable 5 from those plans. Using it after that will require usage credits. If capacity allows, we’ll extend the included window. * After this point—when sufficient capacity allows us to do so—we aim to restore Fable 5 as a standard part…

I really don't want this to start being the norm

Re: Claude Fable 5

#92

Post by yandie »

brianmcnulty wrote: post #31

I wonder how Claude Fable will live up to expectations and how good those Fable/Mythos classifiers really are. It seems a bit convenient for Anthropic to release this magical insane model when they are about to IPO.

Of course it's all about building the hype for the IPO :)

Re: Claude Fable 5

#95

Post by victor106 »

> A new data retention policy Finally, we’re making a change to the way we handle business customer data for Fable 5, Mythos 5, and future models with similar or higher capability levels. We will require 30-day retention for all traffic on Mythos-class models, on both first- and third-party surfaces. We won’t use this data to train new Claude models, or for any non-safety-related purpose, and we’ve instituted new privacy protections including logging all human access to the data and ensuring its deletion after 30 days in almost all cases ...

Very interesting. I am not sure this will comply with organizational policies and standards protocols (HIPPA etc.,)

Re: Claude Fable 5

#96

Post by aizk »

I'm calling that this will be a dud. Price will be too high, it'll just be a watered down version of mythos, and just look at the track record of Anthropic's last few releases.

Re: Claude Fable 5

#97

Post by mickdarling »

Below is the EXACT text in Claude Desktop introducing Fable 5, including the very professional looking break tags, and at least I know where the links begin and end by looking at the anchor tag there.

They obviously put their best model on the job to build that.

----------------------

Fable 5: Our most capable model yet Our newest model tackles your biggest challenges with fewer check-ins needed.

• Included in your plan limits until Jun 22

Fable takes 2× the usage of Opus. • Switch models when a message is flagged

When safety measures flag a message, automatically switch to a different model to keep chatting. When off, your chat will pause instead. https://support.claude.com/en/articles/15363606" target="_blank" rel="noopener noreferrer">Learn more

Re: Claude Fable 5

#98

Post by csomar »

simonw wrote: post #46

Pelican for Fable 5 on default settings is a clear improvement on Opus 4.8 Fable 5 default: https://gist.github.com/simonw/036bee5a703e7ec84e34efa974438... Opus 4.8 (the "max" one is closest to Fable): https://simonwillison.net/2026/May/28/claude-opus-4-8/#and-s... Now here are the Fable pelicans for all five of the thinking effort levels - low, medium, high, xhigh, max: https://tools.simonwillison.net/markdown-svg-r…

Where is the clear improvement on Fable 5? The tail is misplaced.

Re: Claude Fable 5

#99

Post by aray07 »

eggbrain wrote: post #24

For those of us on subscription plans: * From today through June 22, Fable 5 is included on Pro, Max, Team, and seat-based Enterprise plans at no extra cost. * On June 23, we’ll remove Fable 5 from those plans. Using it after that will require usage credits. If capacity allows, we’ll extend the included window. * After this point—when sufficient capacity allows us to do so—we aim to restore Fable 5 as a standard part…

i have never seen this before - where you offer something and then take that away

Re: Claude Fable 5

#100

Post by hootz »

cuuupid wrote: post #60

Not missing the forest for the trees, this effectively means in 3-5 months China will drop open source models that are every bit as capable and dangerous as current day Mythos except with no safeguards. And the only companies safe from this are the large corporations that shook hands with Anthropic? Because Fable doesn't seem to have actual safeguards, more like 'if you talk about this you will be talking to Opus.' I…

My bet is that Mythos is still over-hyped and the cybersecurity fear and guardrails are mostly marketing to force company partnerships through Glasswing and get public attention.
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