Claude Sonnet 4.6 brings 1M token power and fewer AI hallucinations

Anthropic has released Claude Sonnet 4.6, the latest version of the company’s mid-range AI model, according to a recent blog post. The update promises significant improvements, especially for those who use Claude AI for coding and more advanced tasks.

According to Anthropic, around 70 percent of developers with early access to Sonnet 4.6 prefer the new model over its predecessor. Sonnet 4.6 is described as more consistent, better at following instructions, and less prone to hallucinating answers or incorrectly claiming that tasks have been completed—things we all want from our LLMs.

Another new feature is a significantly expanded context window of up to 1 million tokens (in beta). In practice, this means that the model can handle very large amounts of text in a single query.

Sonnet 4.6 also has improved “computer use skills,” meaning it can interact with programs in a more human-like way by clicking, typing, and navigating in, for example, web browsers and spreadsheets. In the OSWorld benchmark test, the model shows clear improvements compared to previous versions.

Claude Sonnet 4.6 is now the standard model for both Free and Pro users in both claude.ai and Claude Cowork.