The news of September 30thAnthropic Today, September 30th, a book was released announcing a front line AI Models Claude Sonnet 4.5 and claims it's the best in the worldProgramming Model”.

Anthropic officially launched a new generation of big models, Claude Sonnet 4.5, which was updated in several benchmark tests and called "the most popular AI in history."。
It was described that Claude Sonet 4.5 ranked first in the SWE-bench Verified test, showing the best real programming capability, and that the model could focus on more than 30 hours on a continuous basis, well above the previous seven-hour limit of Claude Opus 4 and Codex。
In the OSWorld benchmark test, Claude Sonnet 4.5 achieved a performance of 61.4%, a significant increase from 422% four months ago。
Anthropic indicates that the new version of the model has been significantly enhanced in terms of the construction of complex intelligence, operating computers, reasoning and mathematics。
In terms of security, Claude Sonnet 4.5, known as the Anthropic model, has so far had the highest alignment, significantly reduced the problems of affiliation, deception and hallucinations, and made a breakthrough in the injection of defensive tips into attacks and material miscalculation。
It is noteworthy that Anthropic synchronized the introduction of the interim research preview "Imagine with Claude" that allows users to experience the process of modelling software generation in real time, which will be open to Max subscribers in the next five days。
The co-founder of Anthropic, Jared Kaplan, revealed that a more advanced Opus model is expected to be launched later this year。