Anthropic Claude

Claude is Anthropic's family of frontier large language models (LLMs), engineered for state-of-the-art performance in complex reasoning, coding, and long-context tasks with a core focus on Constitutional AI safety.

Claude is Anthropic’s flagship AI assistant, built on a foundation of safety-focused research: Constitutional AI. This framework ensures the models, including the high-performance Claude 4.5 Opus and versatile Sonnet, self-critique against a set of guiding principles, delivering outputs that are helpful, honest, and harmless. The technology excels in deep analysis, handling massive context windows—up to 1 million tokens in specialized use cases—for summarizing full codebases or long documents without losing context. Its current models consistently rank at the top of industry benchmarks for expert reasoning (GPQA) and coding, making it a powerful tool for enterprise workflows, complex problem-solving, and advanced agentic applications.

https://claude.ai