diff --git a/packages/bedrock-sdk/src/client.ts b/packages/bedrock-sdk/src/client.ts
index 523df8ba..952854d7 100644
--- a/packages/bedrock-sdk/src/client.ts
+++ b/packages/bedrock-sdk/src/client.ts
@@ -159,10 +159,10 @@ export class AnthropicBedrock extends Core.APIClient {
 }
 
 /**
- * The Bedrock API does not currently support prompt caching or the Batch API.
+ * The Bedrock API does not currently support prompt caching, token counting or the Batch API.
  */
 type BetaResource = Omit<Resources.Beta, 'promptCaching' | 'messages'> & {
-  messages: Omit<Resources.Beta['messages'], 'batches'>;
+  messages: Omit<Resources.Beta['messages'], 'batches' | 'countTokens'>;
 };
 
 function makeBetaResource(client: AnthropicBedrock): BetaResource {
@@ -174,5 +174,8 @@ function makeBetaResource(client: AnthropicBedrock): BetaResource {
   // @ts-expect-error we're deleting non-optional properties
   delete resource.messages.batches;
 
+  // @ts-expect-error we're deleting non-optional properties
+  delete resource.messages.countTokens;
+
   return resource;
 }
diff --git a/packages/vertex-sdk/src/client.ts b/packages/vertex-sdk/src/client.ts
index 06231649..685be178 100644
--- a/packages/vertex-sdk/src/client.ts
+++ b/packages/vertex-sdk/src/client.ts
@@ -152,10 +152,10 @@ export class AnthropicVertex extends Core.APIClient {
 }
 
 /**
- * The Vertex API does not currently support prompt caching or the Batch API.
+ * The Vertex API does not currently support prompt caching, token counting or the Batch API.
  */
 type BetaResource = Omit<Resources.Beta, 'promptCaching' | 'messages'> & {
-  messages: Omit<Resources.Beta['messages'], 'batches'>;
+  messages: Omit<Resources.Beta['messages'], 'batches' | 'countTokens'>;
 };
 
 function makeBetaResource(client: AnthropicVertex): BetaResource {
@@ -167,5 +167,8 @@ function makeBetaResource(client: AnthropicVertex): BetaResource {
   // @ts-expect-error we're deleting non-optional properties
   delete resource.messages.batches;
 
+  // @ts-expect-error we're deleting non-optional properties
+  delete resource.messages.countTokens;
+
   return resource;
 }