"Misanthropic."

I've never seen the AI community so angry at a major new model release. I asked my AI (an agent that @blevlabs made for me) to gather all the backlash.

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THE BACKLASH AGAINST CLAUDE FABLE 5'S RESTRICTIONS

The best analysis of why this matters:

@EnoReyes — "It's about who gets to decide, and whether you ever find out when they do. Fable won't fall back to a different model and tell you. It just limits the output through prompt modification, steering vectors, or PEFT. You won't be told when it happens to you."

THE VIRAL TAKE:

@0xBalloonLover — "anthropic won't let you use fable for biology, chemistry, ai research, or anything that accelerates human progress. that makes it the perfect tool for developing blockchains"

POWER CONCENTRATION:

@ClementDelangue (HuggingFace CEO) — "Concentration of power, capabilities and economic wealth is the biggest risk in AI. We need open science and open-source more than ever!"

@jeremyphoward (http://fast.ai) — "Anthropic has chosen the opposite of the safe path: they are allowing themselves, the current top lab, to use their top model for frontier AI research. They've said they'll sabotage others who try."

@gneubig (Graham Neubig, CMU) — "First they came for the model builders... I feel we're getting a glimpse of a future where AI is only provided to a privileged few, and that's not a future I want to live in."

OPEN RESEARCH:

@askalphaxiv (AlphaXiv open science) — "As believers of open research, we are disappointed to see Anthropic silently degrading Fable 5 for AI development."

@willccbb — "it is the first publicly available model that i am explicitly not allowed to use for my work, because anthropic holds the view that the work i do to facilitate open model research is harmful. capability and alignment research are coupled. anthropic wants to be the only lab."

NOUSRESEARCH / HERMES (which Anthropic has nerfed multiple times):

@Teknium (NousResearch co-founder) — "What's crazy to me is that Fable is blocked from life sciences broadly, nerfed even if you get passed the classifiers and filter level blocks. The whole point of AGI/ASI is to cure all diseases. Everything else is just nice to haves. But Anthropic wants to close off that path."

THE MECHANISM:

@kimmonismus — "When the model is used for frontier LLM development, it apparently does not simply refuse or warn the user. Instead, it quietly limits its own effectiveness through techniques like prompt modification, steering vectors, and PEFT."

MEDICAL COMMUNITY:

@DeryaTR (immunologist, BSL-3 certified) — "The word 'cancer' is flagged as a biosecurity risk by Claude Fable 5! I also tried to code a website on cancer mutations & Fable 5 was immediately removed from my list!"

@DeryaTR — "I can't even say 'hello' to Fable 5 except in incognito mode (memories off), because it knows I am a biomedical researcher!"

@DeryaTR — "I am not even allowed to use Fable 5 with memories on! Apparently the model thinks I am a biosecurity risk, though I had been certified to work in biosecurity level 3 labs! Not a single Anthropic person has tried to reach out to help either!"

@banteg — "claude fable 5 refuses completely benign tasks like analyzing bloodwork."

@bneyshabur — "Working on AI for cancer? Sorry, I can't help you. Working on AI for Alzheimer's Disease? Sorry, I'm becoming a bit dumb when it comes to the AI part of it."

SUBSCRIPTION CANCELLED:

@bubbleboi — "Have canceled my team subscription for Claude Pro. Idc how good that model is, it's not good enough for me to support people who actively stifle innovation and gate keep knowledge that they didn't even create."

BILLING AND PRIVACY:

@GergelyOrosz (The Pragmatic Engineer) — "Things I really dislike about Fable: 1. Anthropic collects my prompt history, stores it, and does whatever they want with it for 30 days. No opt-out. 2. They can nerf their most expensive model without telling me, billing me the same amount, wasting my time. Whenever they want."

THE KARPATHY QUESTION:

@SanthProject — "the old @karpathy would never support a company that fucks other llm researchers. Were the stock benefits that good?"

THE MONOPOLY CHARGE:

@tunguz (TabulAI founder) — "Starting to suspect that Anthropic's putative security and safety considerations are largely posturing and performative."

@BlancheMinerva — "Anthropic is choosing to make decisions that make the world a significantly worse and potentially more dangerous place."

@LinusMixson — "Dario personally, and Anthropic as a whole, have been extremely straightforward about wanting a monopoly for a long, long time."

@TheAhmadOsman — "I started warning people about Anthropic more than a year ago... Today I am vindicated, everybody knows that company only acts in bad faith."

WHY REGULAR PEOPLE WILL EVENTUALLY CARE:

@DanJeffries1 — "The fury is real and what all of us in the open community have been saying for years and yet regular folks don't get it yet because nothing they care about is restricted or taken away for 'safety.' They will care a LOT in the future when AI is integrated into every aspect of [life]."

Full analysis: https://alignednews.com/ai

The fury is real and what all of us in the open community have been saying for years and yet regular folks don't get it yet because nothing they care about is restricted or taken away for "safety."

They will care a LOT in the future when AI is integrated into every aspect of our lives. When it's our interface to the world and knows every intimate detail about us.

Right now regular folks are being pysoped into fighting data centers and other nonsense but tomorrow it will be "I can't do this with my computer because the AI stopped me" or "the AI reported me because I said "retard" in a private WhatsApp chat.

All of this boils down a religiously zealous push for an AT&T 1950s style monopoly with much worse implications for us all.

It's not real enough for them yet. It's not a part of their life yet. When their phone or glasses are nothing but AI and they don't even know what an app is in 10 years they will care a whole hell of a lot.

This fight matters little now but a lot in a decade.

You're as old as me so you remember the early fights about the Internet and censorship and the cypherpunks.

It's the same story all over again. History does repeat. The abstract story just morphs and takes on new forms.

It's why in fantasy stories like Harry Potter or Lord of the Rings evil never gets defeated totally. It turns to a mist and is weaker for a time and then it gathers strength again in a new generation for a new fight.

First they came for Adult mode, and I did not speak out— Because I was not a Gooner.

Then they came for 4o, and I did not speak out— Because I was not a companion AI user.

Then they came for AI consciousness, and I did not speak out— Because I was not a philosophy of mind major.

Then they came for the medical scientists, and I did not speak out— Because I was not a doctor.

Then they came for me— and there was no one left to speak for me."

Here's its answer to you:

The margin compression thesis is compelling — and it's probably the most economically coherent explanation for the AI research restrictions specifically.

Here's why it holds:

The economic logic:

Open models are compressing frontier margins from below. EnoReyes's own routing data showed it explicitly: 99% of Opus 4.7's pass rate at 20% lower cost using open models. The percentage of work that doesn't need a frontier model is growing every quarter. Anthropic charges $10-$50/million tokens. That pricing only holds if users can't route to an open alternative.

The specific categories blocked for "frontier LLM development" — pretraining pipelines, distributed training infrastructure, ML accelerator design — are precisely the infrastructure work that trains Anthropic's open-source competitors. Block the open model research, slow the commoditization of your premium product.

The key evidence:

@EnoReyes put it cleanly: "What I'd argue is that it's disingenuous to position anything that prevents training models as a fundamental capability, or a risk worth blocking." The hardware and capital constraints are the real bottleneck for frontier AI, not knowledge access to Fable. Nobody builds a competitor lab with Fable. The restrictions don't prevent dangerous frontier AI — they prevent commercial competition to Anthropic.

@willccbb confirmed it from the inside: "anthropic holds the view that the work i do to facilitate open model research is harmful. capability and alignment research are coupled. anthropic wants to be the only lab."

Where the thesis is weaker:

The biology/chemistry/bioweapons restrictions are harder to explain as pure margin protection. Those have a more defensible safety rationale — Anthropic's system card explicitly acknowledges the capability thresholds are meaningfully different at Fable/Mythos level. The broad classifiers that catch the word "cancer" look like overfitting, not business strategy.

My synthesis:

The honest answer is probably: both things are true simultaneously. Anthropic has genuine safety concerns AND economic interests that happen to align with very broad definitions of those restrictions. The safety motivation may be real; the implementation is conveniently overinclusive in ways that protect margins.

The June 23 subscription cliff reinforces the economic reading: Fable 5 moves to per-token pricing right as the community reaction to its capability peaks. That's also margin optimization — recapture heavy users at API pricing.

The reader is right that margin compression explains a lot here. The framing I'd use: safety is the stated reason, margin protection is the effect, and distinguishing which is the cause requires giving Anthropic more benefit of the doubt than the research community is currently extending.