… Increasing the pace of scientific progress is a core part of Anthropic’s mission. Machines of Loving Grace describes the prospect of a “compressed 21st century” in which decades of scientific progress occur over just a few years. …
… If we can make progress on weak-to-strong supervision, we might find that our methods help us keep those ultra-smart models aligned to our values. …
… Instead, we provide illustrative examples of the model’s performance, along with aggregate statistics on our progress to date. …
… Memory across sessions The progress file, which by convention we call here CHANGELOG.md, is the agent’s portable long-term memory, acting as a sort of lab notes. In CLAUDE.md, Claude was instructed to keep track of progress in this file. …
… How uneven is this gradient, and what does the changing composition of scientific progress imply for which human problems get solved first? The jagged frontier: Model capabilities are stronger in some domains than in others. …
… Models of this capability level require stronger cyber safeguards before they can be generally released. We’re making swift progress on developing these safeguards and expect to be able to bring Mythos-class models to all our customers in the coming weeks. …
… Progressive disclosure is the core design principle that makes Agent Skills flexible and scalable. …
… With Opus 4.5, we’ve made substantial progress in robustness against prompt injection attacks, which smuggle in deceptive instructions to fool the model into harmful behavior. …
… It took us two years to release our first commercial model, and just three more to develop models that can discover severe cybersecurity vulnerabilities , take on a wide range of real work , and even begin to accelerate the pace of AI development itself . …
… Among production models, the pattern was clearer at the top end: Claude Opus 4 and 4.1—our most capable models—performed best across most of our introspection tests. However, beyond that, the correlation between model capability and introspective ability was weak. …