2025-05-22claude#model#opus
Claude Opus 4 — the original Claude 4 flagship
Anthropic launched Opus 4 with stronger coding and agentic capabilities and a 200K-token context window.
Anthropic released Claude Opus 4 on May 22, 2025 as its flagship Claude 4 model. It focused on coding, advanced reasoning, and long-running agentic tasks, with a 200K-token context window.
This entry is retained as a dated archive. Opus 4 has since been superseded, so use Claude Code's model selector or current Anthropic model documentation instead of copying an old model identifier.