New Features

Environment Variable Management

• Enhanced environment variable handling: Environment variables are now loaded from multiple sources in a hierarchical manner. The new system merges environment variables from:
• Local settings (localSettings)
• Project settings (projectSettings)
• Managed settings (managedSettings)

This allows for more flexible configuration management across different scopes.

Model Support

• Added support for Claude 3.5 Sonnet v2 (October 2022 release):
• First-party API: claude-3-5-sonnet-20241022
• AWS Bedrock: anthropic.claude-3-5-sonnet-20241022-v2:0
• Google Vertex: claude-3-5-sonnet-v2@20241022

The new model includes updated pricing:

• Input tokens: $3 per million
• Output tokens: $15 per million
• Prompt cache write: $3.75 per million
• Prompt cache read: $0.30 per million

Cost Tracking

• Improved unknown model cost handling: When using models without known pricing information, the system now properly flags this with hasUnknownModelCost = true to alert users that cost calculations may be incomplete.