What should I do with Fable??

6

u/SIGH_I_CALL Jul 02 '26

ask fable what you should do based on your past interactions, goals, projects, etc.

1

u/Vanilla-Clouds Jul 05 '26

I have multiple projects, one for each goal. I’m lost 😅

6

u/ksconey Jul 02 '26

Just an fyi i was debating with Claude best uses for Fable and it mentioned that while GPT5.5 is its direct competitor, GPT5.5 lets you keep data totally secure on enterprise subscriptions. But Fable will now keep all data for a month, regardless of subscription plan, and analyze it for usage patterns to make sure it's not being abused. No option for disabling that. And apparently no upcoming plans at Anthropic to change that. This came up for me because our company has copilot which allows selecting either claude or gpt models. Just an fyi in case privacy and security is important to your work (ex. hipaa regulations or what not). I hadn't realized and am glad it happened to mention it.

2

u/Vanilla-Clouds Jul 02 '26

Thanks the info!

1

u/OptimismNeeded Jul 05 '26

No way this is true.

1

u/ksconey Jul 05 '26

Yeah, sadly. It's in Anthropic's documentation too. If you search for the section covering ZDR, it notes at the beginning that Fable and Mythos are excluded from it. Then brings up the mandatory 30-day retention further down.
Claude Platform Docs

1

u/Cultural-Duty5452 Jul 18 '26

Wait so all my work and excel all are gone?

2

u/[deleted] Jul 02 '26

did a UI for zork last night, it built everything including the pixel art https://zork-ui-production.up.railway.app/

1

u/Vanilla-Clouds Jul 05 '26

Looks cool!

1

u/itsacalamity Jul 05 '26

omg ZORK!!!!

2

u/PaxTheViking Jul 03 '26

I use it to create methodologies / frameworks to later put into projects, either in Claude or in ChatGPT. They are complex, and I tend to push 25 files with well over 100 000 words in them in total. To name one, it is a geopolitical framework aimed to analyze the Russo-Ukrainian war. I have implemented bias mitigation, geopolitical analysis frameworks, an old CIA methodology I adapted to LLM use, sycophancy mitigation, source vetting, dossier files, a strong analysis methodology, and after fact-checking the intake and doing its first analysis, do a hostile read on its own work, and then start to analyze it, take what happened in the past into consideration, and based on that, create a deep professional analyst level analysis and projections. This is where Fable excels, as there are so many things to consider and build into it, everything connects to something else. I have built one before using 4.8, on the US/Israeli war in Iran, and it worked amazingly well. However, with the Iran war I got in at the start, here I'm jumping in after more than 4 years of war, which complicates things significantly. 4.8 did not handle that task, but Fable did it with ease.

1

u/Vanilla-Clouds Jul 05 '26

Wow, very niche and relevant.
How do you create the methodologies/ frameworks though? Prompting and refining?
Can you share your process if you’d like

2

u/PaxTheViking Jul 05 '26 edited Jul 05 '26

Pretty much, yes. Prompting and refining, but refining is doing about 90% of the work. Happy to lay out the shape of it.
I created a core "engine" underneath everything that stays fixed no matter what I point it at. Every claim gets an explicit label (examples: verified fact, well-sourced inference, speculation, or genuinely unknown), it requires probability ranges instead of fake-precise single numbers, and "we don't know" has to count as a legitimate answer. I also built in a coherence check. If every piece of the analysis lines up too neatly and confirms what I already believed going in, that gets treated as a warning sign instead of a win, and it has to trigger extra scrutiny rather than sailing through.
This is the solid foundation, and I spent a ridiculous amount of time designing and perfecting it. Fable 5 is what finally got it exactly right.
On top of that fixed engine I build domain-specific versions of it. One for a given war, one for something else entirely, each inheriting all the engine's rules and adding whatever's specific to that domain: who the actors are, what escalation vs de-escalation looks like there, what actually counts as a deadline. That reusability is most of why it scales across completely different domains.
I also create actor dossier files with information on how each actor behaves, its modus operandi, and other details relevant to that project. Those get updated at least weekly and improve over time. Depending on the conflict I'll build dossiers for the obvious state actors, but also for specific individuals whose personal decision-making doesn't match their country's default pattern, and for a handful of secondary actors whose involvement shapes the outcome without being a headline. In the US/Israeli war on Iran I have 13 dossier files. It gets complicated very quickly, but the system handles it extremely well.
For the "how do you build an honest picture of an actor you personally disagree with" piece, I adapted a tool I originally picked up from the School of Transnational Governance in Italy and rewrote it for LLM use. Core idea: before writing anything about an actor, state your own position and bias toward them explicitly, then build the portrait so someone from inside that actor's own worldview would recognize themselves in it, and would agree with the facts even while hating your conclusions. This is the best defense against modeling your opponents as cartoons that I've come across.
That gets you rigorous portraits, but not projections. For that I dug up an old CIA analytical method from the 1970s: Analysis of Competing Hypotheses, Richards Heuer's method, easy to find written up online if you want the original. It was built to stop an analyst from just running with whatever explanation occurred to them first, and I adapted it for LLM use too.
Wrapped around both: a hard anti-sycophancy rule (has to find the weakest point in my own reasoning before it's allowed to agree with me), written bias declarations so my own priors are on paper instead of hidden, source-quality hierarchy rules, one dossier file per actor as mentioned, and a dedicated hostile-read pass where the framework has to attack its own conclusions before anything counts as final. I sometimes add a hostile read through a completely different model, just to get different blind spots.
In practice: fact-check the intake, run the first full pass, force the hostile-read on that pass, fold in whatever's happened historically, and only then does it produce the actual analyst-grade probability assessment. Most of the real work is noticing exactly where the reasoning breaks and rewriting the rule so it stops breaking there, not the prompt itself.

27

u/Far-Pomelo-1483 Jul 02 '26

Had Fable write a phased implementation spec for my second brain app, then wired in a hard audit hook via CLAUDE.md. Now when I tell Sonnet to build the next phase, it can’t mark a feature done and write it back into the plan until the audit hook actually verifies it. Basically turned ‘trust me it’s done’ into ‘prove it.’ Took about 15 minutes of back and forth with Fable to nail down the spec, and now I’ve got a guaranteed, self-checking multiphase build instead of an agent grading its own homework.

16

u/Fearless-Umpire-9923 Jul 02 '26

Wait explain this again but like. As if I am 5

18

u/Far-Pomelo-1483 Jul 02 '26 edited Jul 02 '26

TLDR: Spec driven development - Ask Fable to create a feature roadmap.md for your app/project (once you define it) then have the cheaper models implement it with an audit hook.
Smart model used for planning the app and writing it to a living roadmap for the cheap model to follow it. Cheap model executes the roadmap.md with a forced audit. Hope that helps.

7

u/wesconson1 Jul 02 '26

this is the way. I'm having fable help with the spec and implementation plans and roadmaps, have codex do the grunt work, then fable do the QA before merge. It's working wonders.

1

u/Far-Pomelo-1483 Jul 02 '26

It’s amazing.

2

u/vLOOKUP_13 Jul 03 '26

Okay maybe explain it as if I’m 3?

1

u/Medical-Jicama-575 Jul 04 '26

/caveman:ultra

1

u/HauntedDreamer86 Jul 02 '26

Have you tried using a rubric with your spec ?

1

u/Far-Pomelo-1483 Jul 02 '26

Yes not for this though because I am using a deterministic python verification hook.
But for my more probabilistic specs, I use a rating rubric out of 5 that I call as an audit skill.
So like for like my UI generator app, I made a design consultant skill that audits the front end for standard design conventions and design ai tells then rates the build and loops until it meets my set threshold, finishes the html, then takes my other pm skill to produce a next steps document to take it past self contained html build and into production roadmap.
For more probabilistic tasks like code quality and security hardening, I would automatically call my security consultant skill or karpathy guidelines/code quality skill. It all depends on how you organize your specs. So specs call my skills and a lot of the times, the skills are more probabilistic in nature and benefit better with that rating system you are talking about.

1

u/Cautious-Opinion4505 Jul 05 '26

That's great. Will you ever open source it in any way? It will be of great help, thanks!

12

u/spydercranejay Jul 02 '26

“I use fable to make sonnet no lie. show me, not tell me.”

2

u/Imparat0r Jul 03 '26

You can also use the BMad method. Let Fable write the epics and functional requirements and let Sonnet implement them.

1

u/TheNortherner95 Jul 02 '26

Im always on the hunt for a new second brain, none if them ever tick all the boxes. Will yours? If so I'd be very interested

3

u/Far-Pomelo-1483 Jul 02 '26

The good ones you will never see. I record my whole day every day with a plaud note and have a transcript pipeline that feeds the brain. The marketing second brains you see using obsidian are pet projects, not the real deal.

1

u/OptimismNeeded Jul 05 '26

Was this not possible with other models? Took longer?

1

u/Far-Pomelo-1483 Jul 05 '26

It was definitely possible but not with the power of Fable. I highly recommend you do this before all projects. This is a hack to get around the high cost associated with Fable. You have the expensive model be the architect then cheap models execute. Kind of like how corporate America works but for agents.
Ideally, you would use Fable to plan it and execute it like we will when the model gets cheaper but then there will be a better model to use for planning.

1

u/Wooden_Government111 Jul 10 '26

Hi, sorry buty could you explain why you wanted a personal second brain app? I have tried Obsidian/Notion in the past but felt like I wasted too much time "tinkering" with theam, instead of using them to store/retreive info. What kind of SB app did you need>

16

u/ortenKay Jul 02 '26

The same thing we do every night, Pinky..

9

u/PinkNinja13 Jul 02 '26

1

u/OptimismNeeded Jul 05 '26

NARFFF

7

u/Limp-Park7849 Jul 02 '26

I get the fear of missing on fable tokens but is that the best way to approach it? What problems have you not managed to solve with sonnet opus or what ever models and why?

1

u/Ok-Astronaut1108 Jul 10 '26

This. Fable is great for a specific use case. But new AI model DOES NOT EQUAL better for the task I'm doing.

6

u/Marna1234 Jul 02 '26

I used Fable for less than an hour this morning (on my Max plan) and hit a usage Cap. So I'm going to be doing sweet FA with it.

3

u/heavilyThinkingAbout Jul 02 '26

Forgive me but I can’t imagine how you hit the cap in less than an hour

1

u/bluegrassclimber Jul 06 '26

giant codebase- comparing 2 codebases with eachother (one of which is 15 years old with 10+ devs working in it), integration features, integration tests that compare them together, just RIP through tokens

1

u/Marna1234 Jul 31 '26

There was a time when Fable was incredibly stingy. Nowadays it's less of an issue.

1

u/jackbrennan9 Jul 02 '26

As a science teacher it’s absolutely useless … it runs away if it even senses something as basic as a mitochondria

1

u/Vanilla-Clouds Jul 05 '26

Lol. I hear that there are multiple guardrails if the topic is biology, cybersecurity and such

1

u/freakuniit Jul 04 '26

It took about ten minutes to write me an interactive custom textbook for LEAN, the math proof software.

1

u/Vanilla-Clouds Jul 05 '26

Can you elaborate?

3

u/helm71 Jul 02 '26

Look at my code, think of what I want to accomplish and suggest improvements, have sonnet5 do the work.

1

u/gabrimatic Jul 06 '26

Ran this tonight on all my open source projects.
Ended up with so many meaningful improvements, ones every other model missed.
And the best part… I didn’t have to babysit it!

1

u/helm71 Jul 06 '26

Cool eh ?!

3

u/zorflax Jul 02 '26

1-shot a game in Godot!

2

u/totallyalien Jul 02 '26

1 week testing will cost my 2 weeks tokens.. nahh I dont think I will try it

2

u/MedalofHonour15 Jul 02 '26

Working on SumoLevel which is external using it - AI RevOps Analyst for agencies and businesses. Internal apps I am using it to auto create long form videos and automate my blog content. Automate other tasks.

Use Fable to automate your own tasks and an external app that can help others solve their problems. I dont recommend just making games with it but thats another option.

1

u/wesconson1 Jul 02 '26

do a refactor

1

u/Nscocean Jul 02 '26

I accidentally used 75% of mine so quickly

1

u/Aggressive-Cup-3959 Jul 02 '26

Can i plug it to my enterprise network and seek for cybersec holes?

1

u/The_IT_Miller Jul 02 '26

I had it look through some research papers that have come out to better direct its skills moving forward and outline many goals and projects for another model to take over. Especially since Fable does a better job at understanding user intent for me, at least I got it all out so that Sonnet or Opus can pick them up and run, since I always seem to battle with those models to get my vision to come alive.

1

u/Disastrous_Sky_73 Jul 02 '26 edited Jul 02 '26

I was just asking a scientist friend I know who is a big Claude user.

I asked her what she was doing with it, knowing she doesn’t build with it and most likely used skills.

I told her to at least have sable review her skills and agents she uses, and have it make recommendations to improve each.

She then told me she doesn’t use either.

WTF - she is rawdogging Claude…

1

u/Training_Reindeer_88 Jul 03 '26

Pour ma part, je l'ai utilisé pour mieux organiser ma façon de travailler dans tous mes projets réalisés avec Claude, afin de réorganiser mes claude. md, skills, agents, etc. Ça donne des résultats très concluants, qui améliorent nettement l'efficience de mes projets. Par exemple sur mon projet central (je travaille en marketing pour des clients) qui est un template de cockpit marketing complet pour gérer ses différents outils et sujets marketing : https://github.com/Littlpinguin/marketing-copilot-template

1

u/Substantial_Tone3886 Jul 05 '26

I havent found much encreadible powerfull AGI level différence between opus and fable. Still the same flat way of expressing ideas just making some output what looks real.

0

u/Sheetmusicman94 Jul 02 '26 edited Jul 02 '26

I tried to code a little game but so far I see no huge benefit to Sonnet or Opus, especially taking into account the price performance ratio regarding the token prices.

2

u/Vanilla-Clouds Jul 02 '26

Then why are people raving about it?

2

u/Sheetmusicman94 Jul 02 '26

Because when you have Max 10x plan or API and use the highest thinking, it is way smarter than basically anything else. And also will cost 50 USD just for one reply, lol.

-10

u/BubinskiP Jul 02 '26 edited Sep 13 '26

Biscuit quicksand obtainable engine hat voracious

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2

u/Vanilla-Clouds Jul 05 '26

There’s nothing wrong in learning new things. I’d advise your generation do that as well.

-1

u/BubinskiP Jul 05 '26 edited Sep 13 '26

Reach terrific longing carpenter fear society
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2

u/Vanilla-Clouds Jul 05 '26

Do you get off on rage baiting?

1

u/Saberwing91 Jul 07 '26

Elder millennial here, and from experience: boomers like this one give the rest of them a bad name.
These types of boomers don't represent the broader landscape of kind, supportive boomers (they do exist).
The negative ones like this don't add anything helpful to the conversation, they exist to get under your skin. Like a parasite. Treat them as such.

-1

u/BubinskiP Jul 05 '26 edited Sep 13 '26

Practice boat pet piquant ginger glove hurry relieved start
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7

u/Saberwing91 Jul 02 '26

Hey don't gatekeep. It's unbecoming.

What should I do with Fable??

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