On Thursday, Anthropic released Opus 4.8 , the newest version of its most advanced publicly available model. The model is available everywhere, with standard pricing at the same level as the previous Opus release. …
… In high-risk areas like cybersecurity, biology, chemistry, and distillation , the model blocks responses and falls back to Claude Opus 4.8. …
… Last year, the company said that during pre-release tests involving a fictional company, Claude Opus 4 would often try to blackmail engineers to avoid being replaced by another system. …
… Opus is the model that preceded Mythos and is still openly available. In fact, in late May, Anthropic released a new version, Opus 4.8. Mythos had not been on the market for that long, having been released to limited users as of April. …
… Since releasing Mythos, rival OpenAI released its own cybersecurity-focused model GPT-5.5-Cyber, which it has rolled out to a large group of partners for testing. Topics AI , Anthropic , Claude , Mythos , Security When you purchase through links in our articles, we may earn a small commission . …
… Anthropic plans to use the new funds to “advance our safety and interpretability research, expand compute to meet growing demand for Claude, and scale the products and partnerships our customers rely on.” The round comes the same day that Anthropic released its new Claude Opus 4.8 model, which tout… …
… Matt Suiche, a cybersecurity veteran, told TechCrunch that “if you ask it to write secure code, it assumes it is cybersecurity related work instead of software engineering best practices, and you get downgraded.” Fable is programmed to fall back to Claude Opus 4.8 if it hits a guardrail. “It seems … …
… New models released in November like Anthropic’s Claude Opus 4.5, OpenAI’s GPT-5.1, and Google’s Gemini 3 Pro brought significant improvements to agentic tools, which have multiplied consumption. …
… It is the most valuable thing an AI model can do for defensive security: executing the find, fix, and test loop defenders run every day.” Moussouris’ critique was echoed in the open letter, which also said that the group of experts believe the model capabilities in the Amazon paper “can be replicat… …
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