Anthropic and OpenAI are in a race to produce the best models ever and stay ahead in the AI war. Most recent examples of the same are Claude Mythos and GPT 5.5 Cyber. Both models are highly capable and can find security flaws in any system without breaking a sweat.
Anthropic stated that the coding capabilities of Mythos are advanced enough that they allow the model to surpass skilled human researchers in finding vulnerabilities in software. Furthermore, the company said that the model is ‘substantially beyond those of any model we have previously trained’ and can be deemed too powerful for open deployment. Anthropic gave access to Mythos to a group of around 40 organisations via project glasswing.
Now, what’s interesting is that a lot of AI critics are suggesting that Anthropic is exaggerating in terms of the capabilities of Mythos. In a podcast named Core Memory, Sam Altman said that the buzz around Anthropic Mythos is nothing but fear-based marketing. He further said that this kind of messaging could be used to justify keeping advanced AI systems in the hands of a smaller group.
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Altman said, ‘It is clearly incredible marketing to say, ‘We have built a bomb, we are about to drop it on your head. We will sell you a bomb shelter for $100 million.’
In its defence, Anthropic said that Mythos has already identified multiple vulnerabilities in major browsers and operating systems, including finding a flaw that went undetected for 27 years.
Coming to the difference, the core distinction between GPT 5.5 Cyber and Claude Mythos is that the former is not being treated as something that is only available for the elitists. GPT 5.5 Cyber access is available via OpenAI’s Trusted Access for Cyber program. As stated by OpenAI, anyone who is working in cybersecurity can access the model.
