[DOCS] Unclear default model behavior for Claude Code on Amazon Bedrock when ANTHROPIC_MODEL is not set

Documentation Type

Unclear/confusing documentation

Documentation Location

https://docs.claude.com/en/docs/claude-code/amazon-bedrock#4-model-configuration

Section/Topic

Bedrock -> Model Configuration

Current Documentation

The current documentation doesn't clearly explain what happens when using Claude Code with Amazon Bedrock without explicitly setting the ANTHROPIC_MODEL environment variable.

What's Wrong or Missing?

What happens if the hardcoded default model isn't enabled in the user's Bedrock account?

Does the system gracefully fallback to the newest available enabled model, or does it fail with an access error requiring manual configuration?

Suggested Improvement

Add clear documentation explaining the fallback behavior and what users should expect when the latest default models aren't available in their Bedrock configuration.

Impact

Medium - Makes feature difficult to understand

Additional Context

_No response_