{
  "bedrock_fact": {
    "id": "brk_sonnet45_id",
    "model_id": "anthropic.claude-sonnet-4-5-20250929-v1:0",
    "model_family": "Claude Sonnet 4.5",
    "category": "model availability",
    "description": "Base Bedrock model ID for Claude Sonnet 4.5, dated/ARN-versioned form. Available via global, us, eu, jp prefixes; not apac. Sonnet 4.5 is the first model generation where global vs. regional (CRIS) endpoint selection applies.",
    "source_url": "https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock",
    "created_at": "2026-07-02 06:03:26",
    "cite_as": "https://subagentbedrock.com/api/bedrock-facts/brk_sonnet45_id"
  }
}