diff --git a/src/vs/workbench/api/common/extHostChatAgents2.ts b/src/vs/workbench/api/common/extHostChatAgents2.ts
index 5a80b2edbf6..0a835a965e1 100644
--- a/src/vs/workbench/api/common/extHostChatAgents2.ts
+++ b/src/vs/workbench/api/common/extHostChatAgents2.ts
@@ -98,20 +98,7 @@ export class ExtHostChatAgents2 implements ExtHostChatAgentsShape2 {
 					}
 
 					if ('placeholder' in progress && 'resolvedContent' in progress) {
-						const resolvedContent = Promise.all([this._proxy.$handleProgressChunk(request.requestId, convertedProgress), progress.resolvedContent]);
-						raceCancellation(resolvedContent, token).then(res => {
-							if (!res) {
-								return; /* Cancelled */
-							}
-							const [progressHandle, progressContent] = res;
-							const convertedContent = typeConvert.ChatResponseProgress.from(agent.extension, progressContent);
-							if (!convertedContent) {
-								this._logService.error('Unknown progress type: ' + JSON.stringify(progressContent));
-								return;
-							}
-
-							this._proxy.$handleProgressChunk(request.requestId, convertedContent, progressHandle ?? undefined);
-						});
+						// Ignore for now, this is the deleted Task type
 					} else {
 						this._proxy.$handleProgressChunk(request.requestId, convertedProgress);
 					}
diff --git a/src/vs/workbench/api/common/extHostTypeConverters.ts b/src/vs/workbench/api/common/extHostTypeConverters.ts
index 1a07e6b23f2..62d20bbea37 100644
--- a/src/vs/workbench/api/common/extHostTypeConverters.ts
+++ b/src/vs/workbench/api/common/extHostTypeConverters.ts
@@ -2320,9 +2320,7 @@ export namespace InteractiveEditorResponseFeedbackKind {
 
 export namespace ChatResponseProgress {
 	export function from(extension: IExtensionDescription, progress: vscode.ChatAgentExtendedProgress): extHostProtocol.IChatProgressDto | undefined {
-		if ('placeholder' in progress && 'resolvedContent' in progress) {
-			return { content: progress.placeholder, kind: 'asyncContent' } satisfies extHostProtocol.IChatAsyncContentDto;
-		} else if ('markdownContent' in progress) {
+		if ('markdownContent' in progress) {
 			checkProposedApiEnabled(extension, 'chatAgents2Additions');
 			return { content: MarkdownString.from(progress.markdownContent), kind: 'markdownContent' };
 		} else if ('content' in progress) {
diff --git a/src/vscode-dts/vscode.proposed.chatAgents2.d.ts b/src/vscode-dts/vscode.proposed.chatAgents2.d.ts
index 12166a4f50c..e303c682925 100644
--- a/src/vscode-dts/vscode.proposed.chatAgents2.d.ts
+++ b/src/vscode-dts/vscode.proposed.chatAgents2.d.ts
@@ -270,8 +270,7 @@ declare module 'vscode' {
 	export type ChatAgentContentProgress =
 		| ChatAgentContent
 		| ChatAgentFileTree
-		| ChatAgentInlineContentReference
-		| ChatAgentTask;
+		| ChatAgentInlineContentReference;
 
 	export type ChatAgentMetadataProgress =
 		| ChatAgentUsedContext
@@ -322,24 +321,6 @@ declare module 'vscode' {
 		content: string;
 	}
 
-	/**
-	 * Represents a piece of the chat response's content that is resolved asynchronously. It is rendered immediately with a placeholder,
-	 * which is replaced once the full content is available.
-	 */
-	export interface ChatAgentTask {
-		/**
-		 * The markdown string to be rendered immediately.
-		 */
-		placeholder: string;
-
-		/**
-		 * A Thenable resolving to the real content. The placeholder will be replaced with this content once it's available.
-		 */
-		// TODO@API Should this be an async iterable or progress instance instead
-		// TODO@API Should this include more inline-renderable items like `ChatAgentInlineContentReference`
-		resolvedContent: Thenable<ChatAgentContent | ChatAgentFileTree>;
-	}
-
 	/**
 	 * Represents a tree, such as a file and directory structure, rendered in the chat response.
 	 */