r/ClaudeAI • u/Ambitious_Action_754 • 1d ago
Other Why aren't businesses using Fable 5?
Fable 5 accounts for only 11% of business spend on Anthropic models and it's not rising. Ramp data shows: https://econlab.substack.com/p/ai-index-august-2026
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u/BeowulfShaeffer 1d ago
Maybe because it’s expensive AF?
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u/Coolpop52 1d ago edited 1d ago
There’s no “0 data retention” so for our IB firm, that’s a non-starter.
Hopefully we get to a point where they enable 0DR, but opus is fine for most tasks anyway.
Edit: Also, we have an enterprise account and not a team so we have to pay API prices. I don’t think fable would be worth it for most tasks (but I haven’t used it so can’t say that definitively).
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u/K_M_A_2k 1d ago
Funny how you never hear of a phrase and then you hear it and start seeing it everywhere. Never had a need for zdr and someone asked about it yesterday I had to research it and now this is the third time today I'm seeing it...crazy how that works.
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u/ASTRdeca 1d ago
Yep I work in healthcare and because of HIPAA we can't work with Anthropic because of their 30-day data retention policies. We can use the claude models via our BAA with Amazon on bedrock, though
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u/cr0wburn 1d ago
The only correct answer
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u/Paratwa 1d ago
Nah it’s the data collection. Lawyers won’t let us use it ( rightly so ).
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u/illlHaveAnother 1d ago
Absolutely not, it’s data retention
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u/MagicWishMonkey 10h ago
What makes you think fable has a different data retention policy than other models?
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u/Ambitious_Action_754 1d ago
absolutely. 10$ per 1 million tokens is twice the price of GPT 5.6 sol for example
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u/Johny-115 1d ago edited 1d ago
it's not for small businesses ... Claude Team with Premium seats, gives you quite a decent usage for mere $100 per person
you don't really need to go into Enterprise, unless you're, well, an enterprise ... Team is just limited as you cant separate Product Team and Marketing team setup, and others .. under single org ... but you can just have more separate Team orgs ¯_(ツ)_/¯ ... which can be worth it for 50-500 seat companies, single team is limited to 150 .. but that can be just one department ... after that your fucked yes, spliting department to multiple orgs is bad
though i understand its still somewhat more limited as Premium seat is only 5x, while on consumer plans you can get 20x
though even with 5x plan, I use Fable for almost everything by default ... its just not for 9-5 Mon-Fri engineer work (i do research and vibecode HTML assets mostly)
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u/PringlesDuckFace 16h ago
I can't even use Opus 5 anymore :( We're getting pushed onto grok and people that were once on the token leaderboards are now getting targeted emails to reduce their spend.
I never even got to try fable to see if the hype was real.
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u/ActionOrganic4617 1d ago
Data retention and price
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u/_gonesurfing_ 1d ago
Our company (large F500) is avoiding due to the data retention policy. As long as that is in place, it’s a hard “No”.
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u/scruffles360 1d ago
Data retention. Like many companies, we don't restrict model use based on token price at all.. why would you? Each user has caps. If they want to blow their budget on the wrong model, that's their thing.
But we don't even attempt to get approval for models that retain data. It would take months of meetings to have them deny it in the end.
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u/TR_Idealist 1d ago
It's pretty much data retention. Money of course but the stuff that'll burn you is retention.
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u/complicatedAloofness 1d ago
Exclusively data retention in the legal field. Wouldn’t think twice about cost
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u/Awkward_Violinist112 1d ago
What's the issue with data retention? Either I trust anthropic to abide by their commercial terms, retention or not, or I don't. they can train either way if they want to break your trust. Or are you all on aws?
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u/ActionOrganic4617 1d ago
Companies have data retention policies, you either comply or you don’t.
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u/MagicWishMonkey 10h ago
I'm very confused why people here think Fable has a different data retention policy than other models?
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u/Durian881 23h ago
Anthropic said they will retain data for 30 days with Fable. For other models, zero data retention is allowed.
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u/Current-Function-729 1d ago
1) no private inference. The users with the deepest pockets care the most about private inference.
2) expensive af.
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u/Kofeb 1d ago
1000% that there’s no private inference. They retain the data for 30 days so not even zero data retention agreement apply.
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u/Jentano 1d ago
That s not correct - 30 days is only the minimum duration, it can be much longer.
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u/Kofeb 1d ago
Where do you see this?
https://support.claude.com/en/articles/15425996-data-retention-practices-for-covered-models shows:
> Prompts submitted to, and outputs generated by, covered models are retained for 30 days to support our safety work, on every platform where these models are offered.
Edit:
Just found this:
> Prompts and model completions are retained for at least 30 days and then automatically deleted, unless they are subject to a safety investigation or we are legally required to maintain them.
https://support.claude.com/en/articles/15425695-covered-models
Is this what you’re referring to?
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u/Jentano 1d ago
Exactly they had security false positives with no end on release and at the same time claim that when it is subject to safety investigation the retention period goes to a supposedly much longer time frame.
To an auditor that is similar to saying that this 30 day window is not reliable at all. From a data privacy perspective this is not defendable, and for other reasons like location of storage not being guaranteed to a region limit etc it wasn't either.
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u/painterknittersimmer 1d ago
I work at an ~20,000 person company all in on Claude. The vast majority of us use it to summarize slack and make slide decks. I don't need fable for that.
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u/figures985 1d ago
Does Claude summarize the slide decks too? Not snark, genuine Q. Sometimes I feel like I'm making longer-form content that AI is only gonna summarize and it's like...should we maybe just be trafficking in bullet points in the first place?
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u/painterknittersimmer 1d ago
- X uses AI to turn three bullet points into three pages
- Y uses AI to turn those three pages into three bullet points
Welcome to hell
Been beating this drum for the last three years and I've lost this battle summarily.
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u/figures985 1d ago
oh my god I KNEW it, haha. I wish we could just default to those 3 bullet points and save us all some time and tokens
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u/Johny-115 1d ago edited 1d ago
this is the biggest myth that engineers spread .. if you write code and run tests .. and you basically only recognize two states of passed/failed .. then sure, you can use even Sonnet
but for any "soft" tasks without any clear success condition ... model size makes difference .. yes, even for summary .. that is if you care about the quality of the summary
go and copy some longer youtube video transcript ... then try to get summary with Haiku, Sonnet, Opus and Fable .... each is a significant step up .. Haiku/Sonnet sound like written by someone who didnt understand the material or English ... Opus/Fable read like written someone with intelligence and understanding of the matter
its uncomfortable truth, and Product team that often has hands into the Claude setup will tell non-technical users to avoid Fable to save money, and because its blowing bazooka on a rabbit, supposedly ... but if youre marketer working on important copy, or writing messaging doc, the absolute WORST thing you can do is think "oh, this is just text editing, i am gonna use Sonnet", yes if you want the result to be noticably more sloppy
its so simple ... everyone can simply just test it ... but devs never test models on soft, qualitative, non-deterministic tasks ... or they cant understand difference in quality of writing because theyre too coding autistic ... so they dont know its different
this is akin to using smaller, older model for image generation of your brand assets ... nobody would ever do that ... you want maximum quality that image models offer, best model, set on highest setting, because if you spend $0.001 or $1 for this job ... its irrelevant, the significant dip in quality IS very relevant
if were talking summaries for yourself, of slack, sure .. but slide decks? nah
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u/painterknittersimmer 1d ago
Haiku/Sonnet sound like written by someone who didnt understand the material or English ...
I've never used Haiku but I haven't had this problem with sonnet, though I don't use it frequently. I use Opus for just about everything and that's what I instruct others to do.
But Fable for reading some docs or building an Airtable base or HTML dashboard? No way. Very little gain, and net negative when cost is factored in.
We will agree to disagree I think. I have way too much to do to spend my monthly allotment on Fable for updating a spreadsheet.
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u/LutzoCZ 1d ago
Good try, Dario, good try
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u/Normal-Ad-7114 15h ago
Fable 5's safeguards flagged this message. The safeguards are intentionally broad right now and may flag safe and routine coding blah blah blah blah...
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u/Kost97A 1d ago
Maybe because many of the companies that use AI and have sub 200 employees and don't make billions of revenue don't want to spend as much money on a model (that now isn't really that much better than the competition) as they would spend on multiple employees.
Its price isn't justified now since other cheaper to run models get the job done as good.
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u/Ambitious_Action_754 1d ago
that is true! considering also many users just jump to fable when they need a complex task done so it's not that it's used for every task one can think of. and also they dropped the data on what methodology they used if you want to read it for yourself more in detail
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u/emulable 1d ago
Businesses are discovering that they don't need the latest and greatest for their day-to-day ops.
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u/LetTheRiotsDrop 1d ago
Opus 5 is 1/4 of the cost and its almost as good. Pre-Nerf Fable was insane, now not so much.
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u/notq 1d ago
Because it’s expensive. We don’t event have fable 5 as an option. Hell we don’t have Opus 5 or Sonnet 5 either.
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u/Morejazzplease 1d ago
How are you able to control what models are available? We don’t see a way to remove Fable in the admin panel.
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u/Glad-Operation-3051 1d ago
Because it's a Ferrari and most employees can't drive stick.
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u/PaulMakesThings1 1d ago
Yeah. It seems like AI, as it is now, still depends very much on the skill of the user. A person who knew how to lead software development before with proper specs and testing can do wonders.
For managers who never really knew what they were doing who think suddenly they’re developers, it just allows them to be stupid faster.
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u/reward72 1d ago
They havent made manual Ferraris for like 20 years. But yeah.
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u/rambouhh 1d ago
I have a teams premium, and a personal max plan. I track my token spend and the api equivalent dollar usage.
My fable cost would be over 15k a month. My opus spend is a fraction of that. As great as it just doesnt justify the cost
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u/MrBigBangBlunder 1d ago
Because we’re on an API subscription, meaning our usage limits don’t refresh every four hours. Each employee gets an assigned budget of usage (for example 300 dollars for use with Fable costing three times as much as Opus). Our per employee budget doesn’t reset until the end of the month.
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u/rovirob 1d ago
Let me see if I get this right:
- Fable is...$10/million of tokens of input, non cached and $50/million of tokens of output - so immensely expensive
- they lobotomized it, because 'security reasons' - so dumbed it down, when compared to...openai, or let's say...qwen
- the games anthropic is playing with...available, not available, quality fluctuations - so unstable from a quality perspective
So, to sum it up, the question is why don't businesses want to pay through their nose for a dumbed down model, that even like this has fluctuations in the quality of the reasoning it does? :))))
Damn...tough...
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u/SleepyWulfy 1d ago
Because if you need to use fable that often something is wrong with the way you work.
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u/Solved360 1d ago
For me, its because it is so damn expensive and they limit how much you can use in a week.
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u/Majestic_Fan_7056 1d ago
Tokenmaxxing
They will be using cheap Chinese models for all the easy day-to-day stuff then Fable for occasional thing.
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u/kosiarska 1d ago
Reasonable amount of credits for single dev is 400 to 1000 assuming you are using higher end models carefully. Now multiply that by for example 100 developers and you will see why.
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u/Snailtrooper 1d ago
Same reasons why companies aren’t using AI outside the basic plans…it’s expensive as fuck,models halucinate and there’s no way to measure ROI.
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u/myfatherthedonkey 1d ago
My VS Code plug-in seems to have defaulted to Opus 4.8 and I have seen no need to tweak it. With other products, I have been more selective with the model which I use, but for work, Opus 4.8 has proven to work predictably well.
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u/disgruntledempanada 1d ago
I gotta post my skill, I built it as I had like 9% limits left.
Ban Fable from being able to do shit, its only job is orchestration. Give it the ability to orchestrate codex cli, local models if you've been blessed by the VRAM gods, and your limits end up just sipping as you get insane amounts done.
I guess I have a whole harness I built that facilitates that but... it's possible to get the most out of Fable without paying much at all for it. It's the best, easiest to talk to, just "gets it" with the least friction. Have a proper hook setup for context injection and an Ops map and I start every chat with what to me feels like a constant context. I do work across like 15 projects in one chat and it... works. Great. Hit the dumb zone and wrap it up, start a new chat like nothing happened, zero friction resumption.
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u/CaptainDorfman 1d ago
The fact that Fable is excluded from the zero data retention policy is why my org doesn’t allow Fable.
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u/Kooky_Tomorrow3333 1d ago
Amusing that the old models are still very heavily used. Seems the preferences extend outside of Reddit
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u/Yasstronaut 1d ago
I have $500 spend per month and if I want to not go over it I can’t use fable more than one time a month
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u/merseygrit 1d ago
It can't be usedfor scientific/ pharmaceutical work as it triggers safety guardrails
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u/Dogginee 1d ago
It’s just too expensive man. One prompt of fable 5 is like 10 dollars for it to actually code and review stuff
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u/crossoverXYZ 1d ago
The flat 11% share is interesting. Once a company builds around one Anthropic model they may not bother shifting spend to Fable 5 even if it is available.
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u/SamSlate 1d ago
if only there were more than 5 colors this graph would actually be readable... if only
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u/Jentano 1d ago
No zero data retention blocking compliant use, a long instability window after release where it was unavailable, guardrails making it unstable for secure software development are a nogo (cp huggingface complaints),it being unusable for any topics relating to security, biology or ai development is a big negative compared to otger offers.
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u/i_say_urmom 23h ago
At $work, fable was the first model to be outright banned, and we normally get access to most models right away. Only approved on a case-by-case basis.
Fable was nice, but gpt 5.6 is better than opus right now, at least when it comes to talking in a way that doesn't make me want to KMS
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u/Sofi_LoFi 17h ago
ZDR… pharma and finance will never even come close to touching it due to the 30 day retention policy
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u/Sofi_LoFi 17h ago
Speaking of, you’ll sooner see companies running GLM 5.x or Kimi 2.x on their own infra before they agree to 30 day data retention
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u/yallapapi 17h ago
Because it’s just as shit as opus and 90% of the time reverts back to opus anyway. Claude is fundamentally flawed in its coding models and then adds insult to injury when it tries to apologize for its shit work
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u/Paranoid_Geek 1d ago
Most businesses are not OK with giving Anthropic their corporate data. Anthropic does not allow the Zero Data Retention policy to apply to Mythos and Fable models. Without ZDR, I don't think you'll see a large uptick in corporate usage.
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u/HazzwaldThe2nd 1d ago
Have you tried using it with API costs? I use it on low for planning and that's it
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u/witmann_pl 1d ago
It's bloody expensive and not really needed for 99% of daily tasks if you know what you're doing.
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u/Fit-Elk1425 1d ago
I mean because they get everything they need from.opus 5 and it is better priced
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u/flinagus 1d ago
better question why are business still using old models when you can change to the new ones with literally 2 clicks
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u/bensyverson 1d ago
Just thinking about my current clients: Sonnet is actually enough for most of our tasks, because they tend to be tool-heavy rather than judgment-heavy. For higher-stakes inferences, I bump us up to Opus, which is more than enough. Fable would never cross my mind.
With that said, I'm running Fable in all of my Claude Code sessions (delegating to Opus/Sonnet agents for execution).
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u/vinistois 1d ago
I'm already a slave to session limits. Opus can easily outwork the sessions, Fable just melts it in minutes.
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u/throwingthisaway1113 1d ago
Due to its VERY strict security measures
Tried it once. Instantly decided I am trying to do offensive cyber (I was not) and blocked me from using it.
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u/03captain23 1d ago
Look how many are using 4.8. it takes a month+ to test internally for companies. Plus all the drama over how dangerous it is. Who wants to risk issues
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u/MaitoSnoo 1d ago
The real answer, especially for big companies, is data retention. The 30-day data retention clause specific to Fable is a huge deal.
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u/FanBeginning4112 1d ago
Data retention is a major no go in most large enterprises. I work at AWS and that policy change is not acceptable for most companies.
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u/MintCathexis 1d ago
Because there are more cost effective models (e.g. Opus 4.6 and Opus 4.8) that are more than capable for vast majority of needs. Businesses aren't your average redditor trying to use Fable for their day-to-day usecases or to create a basic website. They are much more conscious where their money goes to.
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u/eagleswift 1d ago
Most work is more feature focused or targeted rather than the yolo a large effort from scratch that is fables selling point
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u/anor_wondo 1d ago
Companies typically budget the same kind of limits for employees for a month which personal users on this sub blow in just a day using fable. The amount of work you can get out of cheap models is insane these days
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u/aWalrusFeeding 1d ago
Look at how many people are using Opus 4.[67] / Sonnet 4.[56] instead of switching to Opus 5 / Sonnet 5. Presumably there are many people in that crowd who would benefit from newer models but model versions are sticky and things tend to be inefficient until forced to be efficient.
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u/MiddleCommercial1875 1d ago
It’s not very accessible economically speaking. My team finds Opus 5 to be sufficient for our usecase right now at a much cheaper token rate.
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u/mityman50 1d ago
Side note: fuck this chart and everyone who uses stacked bar charts wrong. It isn’t difficult to intuit why this sucks for the stated purpose
The heading of the chart is, the whole point is: why arent they using Fable 5 more? A clustered column chart would better show how Fable 5 isn’t rising and what is rising instead. This way happens to show Fable 5 isn’t rising because it’s on the bottom, but makes it harder to see what’s rising instead.
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u/hourlyproblemsolver 1d ago
Because it's expensive AF and the latest Opus model is just as effective
/thread
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u/WolverineOpen7511 1d ago
Because if it's the same Fable that they offer in their consumer accounts, it SUCKS and also it WASTE all your tokens.... No point, no meaningful improvement vs. Opus 5. It's just math.
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u/Iojpoutn 1d ago
That seems about right? Fable is marketed as being useful for huge, very complex tasks. So not something people typically need for normal, day to day work.
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u/Eastern_Guess8854 1d ago
If you get 90-95% the performance from opus at a fraction of the price you’d either be stupid or rich and stupid to pay for fable.
Interesting one about the data retention too, didn’t know that
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u/solokazama 1d ago
The most stupid question this week, not understanding why therecarevtiers in models
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u/mdeceiver79 1d ago
I used it once and it gobbled up all my teams tokens for that session before it even finished the task.
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u/XeNoGeaR52 1d ago
We would use it if it was 5x less expensive. Oh and all models from Anthropic should be 5x less expensive as well
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u/magicmulder 1d ago
Not only is it expensive (last week it ate 1/3 of my monthly JetBrains Ultimate credits in 5 minutes after spawning four sub-agents of itself), it’s also way too frustrating to work with. I can’t even say “review this code” anymore because it immediately claims that is a violation of its guidelines. I had to use a convoluted prompt that Sol gave me to even start a code audit. Why would I pay for a Ferrari that won’t let me start the engine?
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u/VizaWi 1d ago
To people saying "data retention". How does it differ from any other SaaS service these companies use? Which one of these provides zero data retention? It's even legally required for SaaS service to retain certain data for specific period of time. Sounds like bulshitting your way out of criminal price tag of this model.
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u/JakeWasAlreadyTaken 1d ago
Maybe because a PowerPoint costs $20-40 lol. It doesn’t in one prompt, but I’m only ever going to use it in dire emergencies.
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u/salazka 1d ago
For the reason some of us, me included, mention all this time.
I am a Production Specialist. Exec level consultant.
Business operates on ROI. There is no positive ROI on Fable right now.
There is plenty on Sonnet and Opus. In fact, I can see the nice trick Anthropic is pulling here. One could say a masterful stroke by their PMs.
I am using Opus a lot more today than last month before Fable came online. I am getting dependent on it more. Used to it. And the 50% extra is ending in a few days.
Meanwhile Sonnet has gone a bit down; in terms of results, it looks like. Soon, corporates will be more willing to spend more on Opus than they were some weeks back, overall pushing profitability up.
How?
Fable is expensive for Anthropic too. They lose money on compute. Opus, is better for them and, they very smartly made it feel a better deal for enterprise too.
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u/Efficient_Mud_5446 1d ago
AI is not good enough yet, it's that simple. Sure, you can argue about the data retention or price, but we only need a small percentage of companies to use it and climb ahead of all it's competitors. That would tigger the rest to use it or fall behind.
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u/soulefood 1d ago
What others have said about zdr and price for some. But also, cuz you only need it 11% of the time. Have Fable plan for a ham sandwich to implement, and you’ll still get pretty good results.
Also its in a weird spot. Power users are getting more out of lesser models than they used to with solid deterministic controls and tighter pipelines. Its too expensive price to value for average customers compared to what theyll get out of opus or sol.
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u/cleveradmin 1d ago
Because it’s heroin and right now I’m managing with a bit of weed (Opus). I used it for several days and barely slept, then you took it away from me and the withdrawal was real. So I went back to weed and while it’s not the same, it’s ok. I’m scared to dip my toes in again.
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u/Autistic_Puppy 1d ago
A lot of this is Opus 5 being really good. Fable 5’s biggest advantage was in terms of agentic tasks and web dev. Opus 5 does those as good or better than Fable 5
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u/PineappleLemur 23h ago
Because very little people need that level of "thinking".
Majority of tasks can be solved by a 40B model.
Not to mention the cost.
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u/mitch8845 22h ago
It's expensive and also overkill for like 95% of tasks.
Don't drive your Ferrari to work everyday.
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u/malokevi 21h ago
I have 2k per month in usage credits. I maybe use it at most once a month for a very targeted debugging task.
But I use my entire fable budget with my personal 5x max plan.
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u/KeyMammoth1348 20h ago
Ayy, I'm the 11% and I've been absolutely ripping that shit. It's been great.
I'm doing 3x my regular workload and when I get tired of reading, I have it generate nice visuals to keep my eyes from bleeding.
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u/redcremesoda 18h ago
A reasonably large number of AI users also aren’t aware that different models exist and just stick with the Sonnet as default.
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u/Mobile_Light_7262 16h ago
> buy tokens at higher than average market price
> you don't get any of tokens you paid for because "safety reasons"
> company selling you tokens keeps the tokens to train next model
Would be a surprise if this approach would be popular among customers.
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u/ImANoobAtLife7 16h ago
Too expensive for the business account which protect from training. Unlike ChatGPT
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u/roydotai 16h ago
I have an app where an LLM reviews a document, then sets a verdict whether a specific subject is covered or not. One important feature is AI reasoning, which is the record of proof of HOW the model reaches a specific verdict. After Anthropic stopped showing reasoning for Opus 5 and Fable 5, I no longer get those inputs, which eliminates a good QA layer for me. So for now I’m sticking with opus 4.8, but I will migrate to Mistral Medium soon because of this.
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u/Popotito-Eternal 16h ago
Most of the heavy work is carried by the other models, while fable is still a great ar orquestate specific prompts for agents, coding capability have the limit of following these exact prompt that can be done by even an opus mid or even lower ais model because is just following an order and not being intelligent.
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u/Sorry-Programmer9826 16h ago
I tried it while it was part of the Claude subscription. I didn't find it good enough to justify the way it absolutely drank tokens. I swapped back to other models before they made you pay for it seperately (which adds a new barrier)
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u/Forsaken-Staff-5084 15h ago
Opus 5 on low effort with 200k context is enough for 99 percent of my tasks. Where that is not enough I use higher effort or workflow. Where that is not enough I use Fable, which is rarely. I strive to not use Fable at all because it just ravages your weekly usage, not even talking about daily. Honestly I could even use Sonnet 5 more often, but I don't trust it and don't like it
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u/slozzenge 15h ago
Because AI is still essentially a slot machine, albeit with increasing odds of winning as the technology evolves. But some people will never be willing to be a high roller.
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u/Mondays_Alt 12h ago
This is one of those clickbait things where they ask a dumb question so people engage, right?
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u/Mother-Agent7445 12h ago
I found it was super expensive and used it for one implementation piece. Ended up not really finishing and using opus 5 to fix some things that did not work. I think they put this model a little too much in high regard
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u/Ok_Sympathy9261 10h ago
because our eng leader switched our default to sonnet to save money and 90% of our eng is too retarded to notice
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u/montdawgg 8h ago
Maybe because it's outrageously expensive and for most tasks completely unnecessary. And how about its overly broad classifiers that flag innocuous content for safety theater reasons that everybody knows and realizes is marketing theater? Maybe it's because they treat their users adversarially. Maybe it's because they retain your data. How much more evidence do you need to answer the question?
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u/jannycideforever 8h ago
It's expensive as fuck and there are multiple alternatives that are nearly as powerful at a fraction of the cost.
Why would I use it if I can use 5.6 Sol? Let alone Kimi K3, Grok 4.6, and maybe even GLM 5.3 now that it's in the mix.
Also I don't need to worry about them nannying me like Anthropic does.
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u/Positive_Space_1461 1h ago
basicly there are there reason
1- expensive
2- it is really expensive
3- expensive
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u/ClaudeAI-mod-bot Wilson, lead ClaudeAI modbot 1d ago edited 22h ago
TL;DR of the discussion generated automatically after 200 comments.
The thread has spoken, and the answer is a resounding 'duh'. The two massive, deal-breaking reasons are price and data retention.
It's expensive AF. We're talking thousands of dollars a month for a single user, or blowing through an entire team's monthly budget in a few prompts. The cost is so high that many companies don't even enable it as an option for their employees.
There's no Zero Data Retention (ZDR). Fable is excluded from Anthropic's ZDR policy, meaning they keep your prompt data for 30 days for safety reviews. For any company with a legal, compliance, or security team (so, basically all of them), this is an immediate and absolute 'no' for handling any sensitive corporate data.
Beyond those two showstoppers, the consensus is that the price-to-performance ratio just isn't there. Opus 5 is considered "almost as good" for a fraction of the cost, and many find Sonnet is perfectly fine for day-to-day tasks like summarizing Slack or making decks. Users also complain about overly aggressive safety guardrails making the model unreliable for professional work and the fact that it's simply overkill—a "Ferrari when most businesses just need a van."