Nov 24, 2025 · Claude Opus 4.1 is a drop-in replacement for Opus 4 that delivers superior performance and precision for real-world coding and agentic tasks. It handles complex, multi-step problems with …

Feb 5, 2026 · Claude Opus 4.6 is the strongest model Anthropic has shipped. It takes complicated requests and actually follows through, breaking them into concrete steps, executing, and producing …

Nov 24, 2025 · Claude Opus 4.5 is yet another example of Anthropic pushing the frontier of general intelligence. It performs exceedingly well across difficult coding tasks, showcasing long-term goal …

Aug 5, 2025 · Today we're releasing Claude Opus 4.1, an upgrade to Claude Opus 4 on agentic tasks, real-world coding, and reasoning. We plan to release substantially larger improvements to our …

As we explained for Claude Opus 4.5, we believe that Opus 4.6 would not display the broad, coherent, collaborative problem-solving skills of a remote-only research engineer at Anthropic, even if given the …

Mar 4, 2024 · Today, we're announcing the Claude 3 model family, which sets new industry benchmarks across a wide range of cognitive tasks. The family includes three state-of-the-art models in …

Feb 4, 2026 · Claude Opus 4.6 Introducing the world’s most powerful model for coding, agents, and professional work.

May 22, 2025 · Today, we’re introducing the next generation of Claude models: Claude Opus 4 and Claude Sonnet 4, setting new standards for coding, advanced reasoning, and AI agents.

Claude Opus 4 and Claude Sonnet 4 are two new hybrid reasoning large language models from Anthropic. They have advanced capabilities in reasoning, visual analysis, computer use, and tool use.

Feb 5, 2026 · I wrote a new test harness that randomly compiled most of the kernel using GCC, and only the remaining files with Claude's C Compiler. If the kernel worked, then the problem wasn’t in …