Anthropic releases Claude Sonnet 5.5, a faster and cheaper follow-up to Opus 5.5

Anthropic has launched Claude Sonnet 5.5, the latest addition to its 5.5 model family. Positioned as a more efficient, lower-cost alternative to the previously released Claude Opus 5.5, Sonnet 5.5 is designed for everyday tasks like bug fixing, document creation, and data analysis. According to the company, the new model runs over 30 percent faster than its predecessor, Sonnet 5, and offers significant cost savings. While Opus 5.5 remains the superior choice for complex, open-ended reasoning, Sonnet 5.5 demonstrates strong performance benchmarks and includes advanced cybersecurity safeguards, such as anti-distillation classifiers. The model is now available across major cloud platforms, including AWS, Google Cloud, and Microsoft Azure, via API. Developers are encouraged to update their integration settings to accommodate the new model's architecture. This release marks another step in Anthropic's strategy to provide specialized, high-performance AI tools for diverse enterprise and developer needs.