diff --git a/src/lib/components/chat/Chat.svelte b/src/lib/components/chat/Chat.svelte
index a912960bff..2a47d4f926 100644
--- a/src/lib/components/chat/Chat.svelte
+++ b/src/lib/components/chat/Chat.svelte
@@ -61,7 +61,8 @@
 		processDetails,
 		removeAllDetails,
 		getCodeBlockContents,
-		displayFileHandler
+		displayFileHandler,
+		getUsageTokenCount
 	} from '$lib/utils';
 	import { AudioQueue } from '$lib/utils/audio';
 	import { createTemporaryChatId, isTemporaryChatId } from '$lib/utils/chatId';
@@ -287,13 +288,10 @@
 
 		for (let idx = activeMessages.length - 1; idx >= 0; idx -= 1) {
 			const usage = activeMessages[idx]?.usage ?? activeMessages[idx]?.info?.usage;
-			const inputTokens = usage?.input_tokens ?? usage?.prompt_tokens;
-			if (inputTokens) {
+			const usageTokens = getUsageTokenCount(usage);
+			if (usageTokens) {
 				hasUsageCheckpoint = true;
-				estimatedTokens =
-					Number(inputTokens || 0) +
-					Number(usage.output_tokens ?? usage.completion_tokens ?? 0) +
-					estimateMessagesTokens(activeMessages.slice(idx + 1));
+				estimatedTokens = usageTokens + estimateMessagesTokens(activeMessages.slice(idx + 1));
 				break;
 			}
 		}
diff --git a/src/lib/components/chat/MessageInput.svelte b/src/lib/components/chat/MessageInput.svelte
index cee85324ed..3eeb6173a8 100644
--- a/src/lib/components/chat/MessageInput.svelte
+++ b/src/lib/components/chat/MessageInput.svelte
@@ -52,6 +52,7 @@
 		getCurrentDateTime,
 		getFormattedDate,
 		getFormattedTime,
+		getUsageTokenCount,
 		getUserPosition,
 		getUserTimezone,
 		getWeekday
@@ -482,13 +483,10 @@
 
 		for (let idx = activeMessages.length - 1; idx >= 0; idx -= 1) {
 			const usage = activeMessages[idx]?.usage ?? activeMessages[idx]?.info?.usage;
-			const inputTokens = usage?.input_tokens ?? usage?.prompt_tokens;
-			if (inputTokens) {
+			const usageTokens = getUsageTokenCount(usage);
+			if (usageTokens) {
 				hasUsageCheckpoint = true;
-				estimatedTokens =
-					Number(inputTokens || 0) +
-					Number(usage.output_tokens ?? usage.completion_tokens ?? 0) +
-					estimateMessagesTokens(activeMessages.slice(idx + 1));
+				estimatedTokens = usageTokens + estimateMessagesTokens(activeMessages.slice(idx + 1));
 				break;
 			}
 		}
diff --git a/src/lib/utils/index.ts b/src/lib/utils/index.ts
index fa727dfda1..0de6c55308 100644
--- a/src/lib/utils/index.ts
+++ b/src/lib/utils/index.ts
@@ -1417,6 +1417,31 @@ export const createMessagesList = (history, messageId) => {
 	return list.reverse();
 };
 
+const toTokenCount = (value: unknown) => {
+	const parsed = Number(value || 0);
+	return Number.isFinite(parsed) ? Math.trunc(parsed) : 0;
+};
+
+export const getUsageTokenCount = (usage?: Record<string, unknown> | null) => {
+	if (!usage) {
+		return 0;
+	}
+
+	let promptTokens = toTokenCount(usage.prompt_tokens || usage.prompt_eval_count || 0);
+	if (!promptTokens && (usage.prompt_n != null || usage.cache_n != null)) {
+		promptTokens = toTokenCount(usage.prompt_n || 0) + toTokenCount(usage.cache_n || 0);
+	}
+	if (!promptTokens) {
+		promptTokens = toTokenCount(usage.input_tokens || 0);
+	}
+
+	const completionTokens = toTokenCount(
+		usage.completion_tokens || usage.output_tokens || usage.eval_count || usage.predicted_n || 0
+	);
+
+	return promptTokens + completionTokens;
+};
+
 export const formatFileSize = (size) => {
 	if (size == null) return 'Unknown size';
 	if (typeof size !== 'number' || size < 0) return 'Invalid size';