Changes to Create a chat completion

the messages/items/content/oneOf[subschema #2]/items request property type changed from object to no type

added subschema #1 subschema #2 to the choices/items/message/content/oneOf[subschema #2]/items response property oneOf list for the response status 200

the choices/items/message/content/oneOf[subschema #2]/items response's property type changed from object to no type for status 200

removed the required property choices/items/message/content/oneOf[subschema #2]/items/type from the response with the 200 status

removed the request property messages/items/content/oneOf[subschema #2]/items/image_url

removed the request property messages/items/content/oneOf[subschema #2]/items/text

removed the request property messages/items/content/oneOf[subschema #2]/items/type

removed the optional property choices/items/message/content/oneOf[subschema #2]/items/image_url from the response with the 200 status

removed the optional property choices/items/message/content/oneOf[subschema #2]/items/text from the response with the 200 status

added subschema #1 subschema #2 to the messages/items/content/oneOf[subschema #2]/items request property oneOf list

request property reasoning_effort was restricted to a list of enum values

added the new high enum value to the request property reasoning_effort

added the new low enum value to the request property reasoning_effort

added the new medium enum value to the request property reasoning_effort

added the new none enum value to the request property reasoning_effort