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Claude Fable 5

anthropic.com

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Re: Claude Fable 5

#321

Post by kilroy123 »

PeterStuer wrote: post #186
AquinasCoder wrote: post #42

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 of subscription plans. We intend to do this…

I'll be amazed if they manage to keep their infra responsive over the next 2 weeks.

I've been getting a lot of these messages today:

API Error: Server is temporarily limiting requests (not your usage limit) · Rate limited

Re: Claude Fable 5

#322

Post by Karrot_Kream »

Seems like Fable is doing a lot better on SWE-Bench-Pro and FrontierCode than GPT-5.5. Given how most folks I talk to and people instead online keep mentioning that GPT-5.5 was better than Opus, I'm curious what the experience now is like.

Re: Claude Fable 5

#323

Post by bobkb »

In an interesting coincidence I ended up watching Person of Interest S4 E5 while reading the announcement. The series showed some code supposedly belonging to to an AI.

Fable 5 said the first screen shot is from “ IDA Pro’s Hex-Rays decompiler” and a windows driver. The second screenshot triggered the safety guard rails and pushed me into Haiku.

Apparently the code is Windows driver code.

Re: Claude Fable 5

#324

Post by axus »

matheusmoreira wrote: post #288
bkjlblh wrote: post #220

> In light of the ability of recent models to accelerate their own development, we’ve implemented new interventions that limit Claude’s effectiveness for requests targeting frontier LLM development (for example, on building pretraining pipelines, distributed training infrastructure, or ML accelerator design). Using Claude to develop competing models already violates our Terms of Service, but enforcing this restrictio…

Looks like Anthropic's definition of safety includes their own safety from competition.

AI-generated competition for thee, not for me

Re: Claude Fable 5

#325

Post by vb-8448 »

BenoitEssiambre wrote: post #134

Looks like a good model (sir). Costs are getting out of control though. 2x Opus and non-metered usage going away. We're quickly approaching the cost of a human salary for normal usage.

In a lot of places outside US we are already above the average cost of an average human.

Re: Claude Fable 5

#326

Post by cge »

The safety gates on this are extreme, and seem considerably wider than "cybersecurity and biology"; they seem to make it essentially unusable for scientists in a number of fields. I have, so far, been bumped back to Opus on 100% of my prompts.

It appears it can be tripped by things as simple as a mention of equilibrium, or anything involving something that looks like chemical kinetics, even at an abstract level. Even touching basic open source packages in my field will trigger it.

Edit: looking at the model card, it appears that chemistry in its entirety is also included in the banned topics; it's just the announcement that mentions only cybersecurity and biology. It also appears that the intent is to ban chemistry and biology entirely, rather than just banning messages deemed high risk.

Re: Claude Fable 5

#329

Post by irthomasthomas »

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…

This is just the sales team doing their thing, applying the Law of Scarcity to drive demand.

It's the same exact speed as opus >=4.5, sonnet 4.5, and twice the speed of opus It must have about the same active parameters, or else its a larger model running in turbo mode (smaller batches) and being heavily subsidized for some reason. But given most of the benchmarks are within 5% I doubt it is a much larger model. Most perplexing.

Re: Claude Fable 5

#330

Post by nicce »

victor106 wrote: post #95

> 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 pri…

> deletion after 30 days in almost all cases ...

Almost… basically they have unlimited power to decide what data is kept?

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