TL;DR

The SDK now supports the new Claude Opus-4-8 model and provides detailed output token usage information, enhancing observability and cost tracking.

New

• Added support for the claude-opus-4-8 model.
• Introduced detailed output_tokens_details in the API usage information.
• Enabled custom file size caps for uploads.

Fixes Worth Knowing

• Streaming now correctly handles encrypted content and stop details, improving reliability.
• File uploads within Skills now correctly preserve the directory structure.

Before You Upgrade

If you are using Skills, verify your file upload paths to ensure they remain correct after upgrading.