diff --git a/api.md b/api.md
index 7f5698f1..44f97ac8 100644
--- a/api.md
+++ b/api.md
@@ -95,7 +95,7 @@ Methods:
 - <code title="get /v1/messages/batches">client.messages.batches.<a href="./src/anthropic/resources/messages/batches.py">list</a>(\*\*<a href="src/anthropic/types/messages/batch_list_params.py">params</a>) -> <a href="./src/anthropic/types/messages/message_batch.py">SyncPage[MessageBatch]</a></code>
 - <code title="delete /v1/messages/batches/{message_batch_id}">client.messages.batches.<a href="./src/anthropic/resources/messages/batches.py">delete</a>(message_batch_id) -> <a href="./src/anthropic/types/messages/deleted_message_batch.py">DeletedMessageBatch</a></code>
 - <code title="post /v1/messages/batches/{message_batch_id}/cancel">client.messages.batches.<a href="./src/anthropic/resources/messages/batches.py">cancel</a>(message_batch_id) -> <a href="./src/anthropic/types/messages/message_batch.py">MessageBatch</a></code>
-- <code title="get /v1/messages/batches/{message_batch_id}/results">client.messages.batches.<a href="./src/anthropic/resources/messages/batches.py">results</a>(message_batch_id) -> BinaryAPIResponse</code>
+- <code title="get /v1/messages/batches/{message_batch_id}/results">client.messages.batches.<a href="./src/anthropic/resources/messages/batches.py">results</a>(message_batch_id) -> JSONLDecoder[MessageBatchIndividualResponse]</code>
 
 # Models
 
@@ -218,4 +218,4 @@ Methods:
 - <code title="get /v1/messages/batches?beta=true">client.beta.messages.batches.<a href="./src/anthropic/resources/beta/messages/batches.py">list</a>(\*\*<a href="src/anthropic/types/beta/messages/batch_list_params.py">params</a>) -> <a href="./src/anthropic/types/beta/messages/beta_message_batch.py">SyncPage[BetaMessageBatch]</a></code>
 - <code title="delete /v1/messages/batches/{message_batch_id}?beta=true">client.beta.messages.batches.<a href="./src/anthropic/resources/beta/messages/batches.py">delete</a>(message_batch_id) -> <a href="./src/anthropic/types/beta/messages/beta_deleted_message_batch.py">BetaDeletedMessageBatch</a></code>
 - <code title="post /v1/messages/batches/{message_batch_id}/cancel?beta=true">client.beta.messages.batches.<a href="./src/anthropic/resources/beta/messages/batches.py">cancel</a>(message_batch_id) -> <a href="./src/anthropic/types/beta/messages/beta_message_batch.py">BetaMessageBatch</a></code>
-- <code title="get /v1/messages/batches/{message_batch_id}/results?beta=true">client.beta.messages.batches.<a href="./src/anthropic/resources/beta/messages/batches.py">results</a>(message_batch_id) -> BinaryAPIResponse</code>
+- <code title="get /v1/messages/batches/{message_batch_id}/results?beta=true">client.beta.messages.batches.<a href="./src/anthropic/resources/beta/messages/batches.py">results</a>(message_batch_id) -> JSONLDecoder[MessageBatchIndividualResponse]</code>
diff --git a/src/anthropic/_response.py b/src/anthropic/_response.py
index 32104410..830bee51 100644
--- a/src/anthropic/_response.py
+++ b/src/anthropic/_response.py
@@ -226,7 +226,9 @@ def _parse(self, *, to: type[_T] | None = None) -> R | _T:
         if origin == APIResponse:
             raise RuntimeError("Unexpected state - cast_to is `APIResponse`")
 
-        if inspect.isclass(origin) and issubclass(origin, httpx.Response):
+        if inspect.isclass(
+            origin  # pyright: ignore[reportUnknownArgumentType]
+        ) and issubclass(origin, httpx.Response):
             # Because of the invariance of our ResponseT TypeVar, users can subclass httpx.Response
             # and pass that class to our request functions. We cannot change the variance to be either
             # covariant or contravariant as that makes our usage of ResponseT illegal. We could construct