You're right. December is when things felt differnt but Opus 4.5 was actually released November 24, 2025. https://www.anthropic.com/news/claude-opus-4-5 https:

You're right. December is when things felt differnt but Opus 4.5 was actually released November 24, 2025. https://www.anthropic.com/news/claude-opus-4-5 https://www.anthropic.com/news/claude-opus-4-5