… Opus 4.6 is one of the best models out there for developers, and this model is measurably more thorough on top of that. It passed Terminal Bench tasks that prior Claude models had failed, and worked through a tricky concurrency bug Opus 4.6 couldn't crack. …
… Evaluations of the final production model show a very similar pattern of results when compared to other Claude models, and are described in detail in the Claude Opus 4.5 system card . …
… The model also shows a major improvement in computer use skills compared to prior Sonnet models. As with every new Claude model, we’ve run extensive safety evaluations of Sonnet 4.6, which overall showed it to be as safe as, or safer than, our other recent Claude models. …
… Overall, it is just as well-aligned as its predecessor, Claude Opus 4.5, which was our most-aligned frontier model to date. Opus 4.6 also shows the lowest rate of over-refusals—where the model fails to answer benign queries—of any recent Claude model. …
… It’s a great model to build with. On our Super-Agent benchmark, Claude Opus 4.8 is the only model to complete every case end-to-end, beating prior Opus models and GPT-5.5 at parity on cost. …
… We did not explicitly train our models to perform this task—and yet Mythos-class models outperformed sophisticated models dedicated to protein tasks known as “protein language models” using their biological reasoning alone. …
… Claude is the first frontier model available on all three of the world's largest cloud platforms: Amazon Web Services, Google Cloud, and Microsoft Azure. …
… This model could work for other bulk sourcing! 🧅📋 That was until another staffer stepped in to tell the models that this would fall afoul of a 1958 quirk of US law, the Onion Futures Act , which very specifically bans contracts of this nature. …