Anthropic has launched Claude Opus 4.1, its most advanced AI model yet, showcasing significant improvements in real-world coding, agentic tasks, and complex reasoning. Available now for paid users via API and major cloud platforms, it outperforms Claude Opus 4 and rivals like GPT-4 and Gemini 1.5 Pro in critical benchmarks. This release intensifies the generative AI arms race as the industry anticipates OpenAI's GPT-5.