Claude Mythos

“You will be upsold Mythos which requires going through their verification program.”

“The ability to delegate larger chunks of code to Claude had a noticeable, step function increase with Mythos Preview.”

“Mythos-class stuff is insanely better at nearly everything than Opus 4.5 was in my experience.”

“Too many refusals in the variant models to be useful, at least for cybersecurity research.”

“HF released a statement and made it clear a closed source model specialized in cyber security refused them.”

“It’s lots of fun to pretend it’s some step-change that’s too dangerous for general release, but in real life it’s not conferring some massive advantage”

“What changed with Mythos Preview is that a model can now take those low-severity bugs”

“I can certainly buy the case that Fable/Mythos is in fact more capable when it comes to identifying and exploiting security issues”

“news about Mythos making security patches and fixing critical bugs in important projects recently”

“Mythos apparently is quite capable and has developed novel exploits on its own.”

“Finally they will pay for all the scaremongering they been doing to sell their models as something so much ahead of all else.”

“all the safety theater that these clowns like to enact to justify the anticompetitive behavior and the impending enshitification”

“It's selective reporting. Says 'in one example', but out of how many, is that one-shot, or is it a random result out of 100.”

“they confirmed that it's notably better at writing code than public Claude Opus 4.7”

“benchmarks designed to actually measure vulnerability discovery and exploitation skills (XBOW AI, ExploitBench) show Mythos substantially ahead”

“Anthropic promised us that Mythos was such an existential threat that it would compromise "every OS and browser on devices across the planet"”

“The longer they hold back Mythos, the more people will drop their Claude subscription”

“It did very well on long agentic work which I expect is what they trained it for”

“This week's release of Firefox 150 includes fixes for 271 vulnerabilities identified during this initial evaluation.”

“I haven't seen much indication that Mythos is more than Opus with a security focused code analysis harness.”

“by the time I had a full scan of the source tree, Claude had found every important problem that it reported”

“So while Mythos certainly is real I think you could do the same with Deepseek pro, GPT 5.5 etc...”

“Anthropic has a good product, but they also pretty consistently say some stupid ass shit if you're being generous, and blatant lies if you aren't”

“it's changed the calculus of security significantly: use AI to vet your code before deployment”

“They have been steadily improving across those metrics, as Opus 4.6 / 4.7 / Mythos demonstrate.”

“Unless we know the exact experimental setup (which in this case is impossible because Mythos is completely closed off and not even accessible via API), all of this is hand wavy.”

“Take a look at all three graphs together and it's clear Anthropic are doing better in this arena”

“when the models are given ambiguous challenges that require multiple steps it's much, much better than anything on the market”

“Mythos is the first model that can complete all the steps of their "The Last Ones" evaluation”

“It's a carefully crafted story trying to convince people it's showing signs of becoming self aware. But it's a complete crock.”

“Mythos seems much, much more creative and self directed, but I'm not yet convinced the core capabilities are significantly higher than what's possible today.”

“Mythos is uniquely capable of exploiting vulnerabilities, not just finding them.”

“It crushes benchmarks across the board, and it does so with fewer tokens per task.”

“In 6 months Mythos will be nothing special, but right now everyone is being manipulated into fearing its release, as a marketing ploy.”

“The new model seems significantly better than Opus4.6 judging by the 'Overall results summary'”

“it's still just a transformer. still gonna have those random misses, still gonna need a lot of hand holding in certain domains”

“Benchmarks can be gamed and claims can be exaggerated, especially if there isn't any method to reproduce results.”

“this model is better - but I'm not convinced it's going to be this massive step function everyone is claiming”

“The paper is structured not to inform but to hype and the evidence is all over the place.”

“Benchmarks look very impressive! even if they're flawed, it still translates to real world improvements”