diff --git a/src/lib/components/common/ToolCallDisplay.svelte b/src/lib/components/common/ToolCallDisplay.svelte
index c653fba404..05d5c2d33a 100644
--- a/src/lib/components/common/ToolCallDisplay.svelte
+++ b/src/lib/components/common/ToolCallDisplay.svelte
@@ -32,6 +32,11 @@
 
 	export let open = false;
 	export let className = '';
+
+	const RESULT_PREVIEW_LIMIT = 10000;
+	let expandedResult = false;
+
+	$: if (!open) expandedResult = false;
 	export let buttonClassName =
 		'w-fit text-gray-500 hover:text-gray-700 dark:hover:text-gray-300 transition';
 
@@ -216,10 +221,22 @@
 										content={`\`\`\`json\n${JSON.stringify(parsedResult, null, 2)}\n\`\`\``}
 									/>
 								{:else}
+									{@const resultStr = String(parsedResult)}
+									{@const isTruncated = resultStr.length > RESULT_PREVIEW_LIMIT && !expandedResult}
 									<pre
-										class="text-xs text-gray-600 dark:text-gray-300 whitespace-pre-wrap break-words font-mono">{String(
-											parsedResult
-										)}</pre>
+										class="text-xs text-gray-600 dark:text-gray-300 whitespace-pre-wrap break-words font-mono">{isTruncated ? resultStr.slice(0, RESULT_PREVIEW_LIMIT) : resultStr}</pre>
+									{#if isTruncated}
+										<button
+											class="mt-1 text-xs text-gray-500 hover:text-gray-700 dark:hover:text-gray-300 transition"
+											on:click|stopPropagation={() => {
+												expandedResult = true;
+											}}
+										>
+											{$i18n.t('Show all ({{COUNT}} characters)', {
+												COUNT: resultStr.length.toLocaleString()
+											})}
+										</button>
+									{/if}
 								{/if}
 							</div>
 						</div>