Claude Platform on AWS gives teams Anthropic-managed inference through AWS billing — full beta headers, Agent Skills, and a separate capacity pool that unlocks a new multi-platform failover strategy.
Claude Code 2.1.198 adds the Claude Platform on AWS as a native gateway upstream, advances the failover chain on model-not-found errors, and auto-refreshes AWS STS tokens — three changes that directly affect how routing teams configure provider fallback.
Amazon Bedrock now serves OpenAI GPT-5.5, GPT-5.4, and Codex through AWS IAM credentials, regional endpoints, and model IDs such as openai.gpt-5.5. Here is what changes for routing layers, Codex config, fallback policy, and OpenAI-compatible gateway design.
