Add spec changes

Co-authored-by: billytrend-cohere <[email protected]>

cohere-openapi.yaml

@@ -5945,6 +5945,18 @@ paths:
                 - messages
                 - model
               properties:
+                stream:
+                  description: |
+                    Defaults to `false`.
+
+                    When `true`, the response will be a SSE stream of events. The final event will contain the complete response, and will have an `event_type` of `"stream-end"`.
+
+                    Streaming is beneficial for user interfaces that render the contents of the response piece by piece, as it gets generated.
+
+                    Compatible Deployments: Cohere Platform, Azure, AWS Sagemaker/Bedrock, Private Deployments
+                  type: boolean
+                  x-fern-audiences:
+                    - public
                 model:
                   x-fern-audiences:
                     - public