Claude Code 4.1 Doesn't Exist: Latest Is Claude 3.5 Sonnet

claude code 4.1

It looks like you’re referring to “Claude Code 4.1,” but Anthropic hasn’t released anything by that exact name. Here’s what you might be seeing:

• Claude 3.5 Sonnet (released June 2024) is the latest public model.
• Claude Code is a separate, invite-only command-line tool that lets you edit and run code with Claude’s help inside your terminal. It’s still in limited beta and hasn’t been versioned “4.1.”
• There’s no public “Claude 4” or “4.1” model yet.

If you saw “4.1” in a changelog or screenshot, it’s likely an internal build number or a typo. For the most accurate, up-to-date information, check Anthropic’s official blog or the Claude dashboard.