This draft is prepared for the LingjingHub models channel. The source is OpenAI Responses API model integration, and the only source basis is the official OpenAI API documentation: https://platform.openai.com/docs/api-reference/responses. For model integration, developers should rely on the Responses API request structure, parameters, returned objects, and interface behavior as defined on that reference page. Implementations should handle inputs, response results, and documented optional configuration according to the official documentation. Because the source is an API reference, this draft does not infer or add information that is not provided there, including specific model names, release dates, pricing, context windows, benchmarks, or product-positioning claims.