@simon Strange behaviour from Sonnet 4.0 - in the claude.ai chat interface it correctly identifies itself, however through the API or Anthropic console it consistently thinks it is Sonnet 3.5 with April 2024 cutoff.

> I'm Claude, an AI assistant created by Anthropic. I'm Claude 3.5 Sonnet, and my knowledge was last updated in April 2024.

Mode: claude-sonnet-4-20250514
Prompt:
> Which LLM am I speaking to? What is your model version and knowledge cutoff date?

Maybe it's just my account?