- Add anthropic/claude-opus-4.5 with aliases: opus, opus4.5, claude-opus - Set intelligence_score to 18 (matching Gemini 3 Pro) - Update Opus 4.1 to use opus4.1 alias only - Update tests to reflect new alias mappings Note: supports_function_calling and supports_json_mode set to false following existing project pattern for Claude models, despite OpenRouter API support for these features.