LLM Gatewayclaude-opusClaude Opus 5.5 (Azure Anthropic)azure-anthropic/claude-opus-5-5LLM GatewayReleased Sep 22, 20261,000,000 token context windowIn $4.00 · Out $20.00ReasoningTool callingStructured outputAttachmentsInputtextimagepdfOutputtext