> For Fable 5, Mythos 5, and future models on Bedrock with similar or higher capability levels, Anthropic will require 30-day retention for all traffic on Mythos-class models. Retaining data for a limited period allows Anthropic to detect patterns of misuse that are not visible from a single exchange. Once you opt into data retention, your data will leave AWS’s data and security boundary.
From the announcement here: https://aws.amazon.com/blogs/aws/anthropic-claude-fable-5-on-aws-mythos-class-capabilities-with-built-in-safeguards-now-available/
> After 30 days, the data is deleted automatically, except in the rare cases where it's part of a safety investigation or we're legally required to keep it.
From: https://support.claude.com/en/articles/15425996-data-retention-practices-for-mythos-class-models
This is odd behaviour, and provides some evidence that Anthropic isn't being managed by serious people. With this policy across AWS/GH/Zed/etc, they're taking their massive lead in enterprise/govt sales and handing it to any competitor who can serve a model anywhere near these capabilities with a modestly nice UI.
Pretty sure this doesn't work for any regulated enterprise or government client. But AWS knows this, so I am curious why they'd agree to it.
> why they'd agree to it
that's obvious, but perhaps worth stating: it's worth it, demand for the model is unprecedented and the only downside for Anthropic if AWS rejected would be some revenue pushed a quarter away as they get Fable ready on their recently acquired compute from xAI and Google.
It's the same for girthub copilot [1] which is more present in gov than aws's solutions.
Anthropic is trying, well see if it's a bold strategy.
1. https://github.blog/changelog/2026-06-09-claude-fable-5-is-g...
They want your data like you everybody else and enterprise data is juicy to say at least
That rules it out for all sorts of apps.
I've worked on a few apps for UKGov and I would absolutely be raising this as a massive red flag.
Thank you!
Is this also the case for Google Cloud? https://docs.cloud.google.com/gemini-enterprise-agent-platfo...
Fable on GCP requires accepting a 60-day retention policy: https://cloud.google.com/terms/advanced-ai-safety-addendum
I don't think it mentions sharing the data with third parties such as Anthropic?
> Through Google Cloud's Agent Platform: Retention will need to be enabled for your new covered model, and retained data stays in your GCP environment. When models become available, onboarding details will be shared.
From https://support.claude.com/en/articles/15425996-data-retenti...
At least it stays in your GCP environment, AWS disclosure says that it will leave your data privacy and security boundary.
That Claude support page says the exact same thing about AWS (“retained data stays in your AWS environment”). AWS’s docs say differently, though, so it seems one of them has incorrect documentation. I wouldn’t necessarily trust the Claude docs to be correct even regarding GCP until some of this is ironed out.
Same as for GitHub Copilot?
"For more on how Anthropic handles this data, see Anthropic’s commercial terms and data retention policy. Enabling the Claude Fable 5 policy constitutes acknowledgement of this requirement. Leaving it off keeps Claude Fable 5 unavailable to your organization."
https://github.blog/changelog/2026-06-09-claude-fable-5-is-g...
Very confident. But will it stick? And if it doesn't -- what then? Back to scheming?
you've got to respect anthropic being willing to shoot themselves in the foot over a belief around Mythos performance
They say it's opt-in but since they are capable of agreeing to this, I am just waiting until they hide this opt-in into the regular ToS when asking for a new model access...
"Legally required" ... gotcha, script writing on Melania Movie 3 has begun in exchange for a national security letter requiring Amazon to both keep the data and not exclude it from training.
OpenAI ... your move. The enterprise market just cracked wide open. Do you want it?
It looks like they’ve been preparing: https://www.aboutamazon.com/news/aws/bedrock-openai-models
> For OpenAI GPT-5.4 and GPT-5.5, classifier-flagged traffic will be retained for up to 30 days for automated offline abuse detection.
https://docs.aws.amazon.com/bedrock/latest/userguide/abuse-d...
Note that if you use AWS Bedrock then you're choosing to pay 10X to 20X because you trust AWS more than Anthropic.
It is literally 10X to 20-X cheaper to directly buy Anthropic subscriptions for your devs.
There’s a few things mixed up in this comment. But the 10-20x cheaper, I’m assuming comes from the difference between the number of tokens you can use on a $200 Claude Max subscription and the cost of those via the API. That’s neither here nor there for this topic around data retention as Fable has that on all providers.
And for the cost, if you’re an enterprise with more than 150 people, you’re on the token plan.
Pro/max subs are not as flexible as bedrock in api use and don’t seem to run the same models either - often times they are notably dumber (quantized I guess) than bedrock equivalent.
The token price is exactly the same on AWS as it is directly from Anthropic. This is the one service that AWS doesn't charge a huge markup for.
The security boundary that AWS maintains is important in a lot areas, like medical, where the datacenter has to support some specific certifications. It isn’t a choice to pay 10x more in those cases, it is the only option allowed.
Yeah thats not the point though.
We 'trust' Amazon already and Amazon has no incentive at all to collect the data to finetune claude because they don't own claude.
What is the point then of a submission about how you will be required to share data with Anthropic? I’d say that the point is precisely that it’s an issue when you don’t trust them as much as Amazon.
Not sure if i follow you tbh.
I only told a commentor why a business would pay more to Amazon than going directly to Anthropic.
The announcement itself is def problematic and either leads to big companies accepting this and then going directly to anthropic or some talks in the background we don't know yet what it will entail.
If you were just repeating the commenter’s point about « choosing to pay 10X to 20X because you trust AWS more than Anthropic » what was not the point?
Amazon's incentive is to fine tune their own possible future model
Amazon/AWS knows how to handle this conflict in a way that customers trust them enough.
Amazon has more to loose than Anthropic
is the 10x the difference between a sub and api token pricing?
I mean, no. Even ignoring the very real benefit (for some) that comes with not needing to trust another party, there are use-cases beyond what you can do with “subscriptions”. Apples and oranges. People just have use cases that aren’t yours.
This is not going to fly in EU.
Americans’ increased awareness of and expectations of the EU is hilarious. This is not how it works.
I suspect they will simply not offer it, for as long as they maintain that it has to in fact fly. Anthropic appears to be somewhat principled here.
Yes it will, there's a clear purpose and the customer explicitly agrees.
us europoors have a choice of using or not using Fable.
This will fly in EU. As long as the company states the time period for which it will keep data and clean it afterwards, gdpr has no issues with the data retention.
Their carve-outs for safety (public interest) and legal are also valid exceptions in gdpr as well.
Yeah it'll fly legally.
Everybody should just assume that they are lying about data retention and learning anyway.
They showed zero respect for intellectual property in the past and they will show zero respect now or in the future. A few thousand Euros/dollars in subscription doesn't matter when several trillions are in play (at least in their plans).
Woah, if anthropic does it, even OpenAI would start doing the same with Azure models
This is BS. They want to train on user data.
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They want your data.
> After 30 days, the data is deleted automatically
Do we believe that?
> or we're legally required to keep it.
Aha - so, data is forever.
> Do we believe that?
If you don't believe them now why would you have believed them earlier when they said "no data is retained" ?
it's either this or playing x30 for a token, anyhow i physically can't write code again
I mean being priced put of sota AI has been on the cards for a year it's mostly a question of when. If that will affect you maybe you should use the chance to resharpen your skills
> except in the rare cases where it's part of a safety investigation or we're legally required to keep it
So basically all your data will flow to NSA/CIA/Mossad if they show even slight interest in your org or you as a person. Gotcha.
always has been, they're explicitly warning you about this now.
Got an email from Zed about the same this morning.
What a "frontier."
Space.
Well, that's the final frontier anyway.
It's wild!
Because they didn't store data before? Don't be so naive.
Zero data retention was an enterprise agreement that Anthropic and Amazon agreed with customers and delivered on. There’s no way AWS would trade in their reputation with enterprises just to soak up some slop.
My thesis is that in software you don't want aggregators. They provide the promise of vendor neutrality, but it comes at the expense of increased supply chain compromise risk, small print technically legal data exfiltration.
Even in the happy case where nothing bad happens, you get a badly integrated product, because you integrate not against the actual vendor, but against a abstraction layer that commoditizes the actual product, effectively forcing you to either use the least common denominator of features, or circumventing the actual aggregation model itself with some kind of 'vendor_specific_parameters' parameter in the aggregator API.
My thesis is drop the vendor neutrality, and build your integration with the vendor directly.
lol
aaaand there it is.
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Thinking about this from a product perspective: the best early-stage tools I've seen (including wyyno.com, a price comparison tool I'm building) succeed by solving a very narrow problem for a very specific user. The 'boring' use case of price comparison turned out to be compelling because the savings are tangible and immediate.
Let’s be real, chances are that the people with a lot of money on the line have given it more thought than the passing thought that you gave this comment.
> chances are that the people with a lot of money on the line have given it more thought
Sure, but considering the average person and how short-term their thinking tends to be, I'm not sure I'd jump straight into "think about how much money they could lose, of course they think long-term".
They give it some thought, but Anthropic and AWS have the whole menu of compliance and security checkboxes needed to reassure CISO it doesn’t need to be “the office of no” and can allow the AI onboarding. The pressure to adopt and adapt to AI is so high right now that there’s nothing a CISO or CFO can say to stop its adoption. And the more they say “no” or “wait,” the more at-risk they put their job.
I know the only reason we are using Claude right now in my large org was because of this policy and another model would have been picked otherwise
You would be very, very surprised
Yeah, seen some downright facepalm moves from execs regarding AI and security.
Don't even need to involve AI or security to be able to highlight some very strange decisions that seem more like intentional sabotage from the inside than anything else. Of course, people are more likely just dumb and lack long-term thinking.
Counter point - Marisa Mayer and Stephen Elop.
right, and they realize the money doesnt exist unless they inflate the values in shadow circles of flow.
I don’t think there are other models near Fable’s capabilities.
OpenAI just added their own models to Bedrock recently too, making that an easy switch.
Bedrock doesn't offer zero data retention for openAI's latest models either
> For OpenAI GPT-5.4 and GPT-5.5, classifier-flagged traffic will be retained for up to 30 days for automated offline abuse detection
https://docs.aws.amazon.com/bedrock/latest/userguide/abuse-d...
I think that’s by AWS though. For Fable you need to flip an account wide flag that says “I want to share my prompts with the model vendor.”
I mean, they were already capacity constrained and just introduced a larger model that takes more capacity to run... They were gonna have to hand some business to competitor one way or another.
Is it a larger model or just better trained? Anthropic does not actually claim it is a larger model anywhere that I can see.