Aug 5, 2025 · Claude Opus 4.1 is a leader on SWE-bench, completing days-long engineering tasks in coherent, context-aware solutions across thousands of steps. With improved code …

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 …

Claude Opus 4 is the world’s best coding model, with sustained performance on complex, long-running tasks and agent workflows. Claude Sonnet 4 is a significant upgrade to Claude Sonnet …

Claude is a family of state-of-the-art large language models developed by Anthropic. This guide introduces our models and compares their performance with legacy models. The next …

Abstract This system card introduces Claude Opus 4 and Claude Sonnet 4, two new hybrid reasoning large language models from Anthropic. In the system card, we describe: a wide …

Claude Opus 4.1 and Sonnet 4 Our most powerful models yet, pushing the frontier for coding and AI agents—and enabling Claude to handle hours of work across Claude and Claude Code.

The next generation of Claude Models: Claude Opus 4.1 - Our most capable and intelligent model yet. Claude Opus 4.1 sets new standards in complex reasoning and advanced coding. Learn …

Oct 22, 2024 · Claude 3.5 Haiku matches the performance of Claude 3 Opus, our prior largest model, on many evaluations at a similar speed to the previous generation of Haiku. We’re also …

Claude Opus 4.1 Aug 5, 2025 1 min read 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 …

The next generation of Claude Models: Claude Opus 4.1 - Our most capable and intelligent model yet. Claude Opus 4.1 sets new standards in complex reasoning and advanced coding. Learn …