diff --git a/src/lib/components/common/Tags.svelte b/src/lib/components/common/Tags.svelte
index 65340f3320..1203feba9e 100644
--- a/src/lib/components/common/Tags.svelte
+++ b/src/lib/components/common/Tags.svelte
@@ -1,25 +1,81 @@
 <script lang="ts">
 	import TagList from './Tags/TagList.svelte';
-	import { getContext, createEventDispatcher } from 'svelte';
+	import { getContext, createEventDispatcher, tick } from 'svelte';
 	const dispatch = createEventDispatcher();
 
 	const i18n = getContext('i18n');
 
-	export let tags = [];
-	export let suggestionTags = [];
+	type Tag = { name: string };
+
+	export let tags: Tag[] = [];
+	export let suggestionTags: (Tag | string | null | undefined)[] = [];
 	export let disabled = false;
 
 	let inputValue = '';
+	let inputElement: HTMLInputElement | null = null;
+	let popupElement: HTMLDivElement | null = null;
+	let suggestionsOpen = false;
 
-	const addTag = () => {
-		const value = inputValue.trim();
+	$: tagNames = new Set((tags ?? []).map((tag) => tag.name.toLowerCase()));
+	$: filteredSuggestionTags = (suggestionTags ?? [])
+		.map((tag) => (typeof tag === 'string' ? tag : (tag?.name ?? '')).trim())
+		.filter(
+			(name) =>
+				name &&
+				!tagNames.has(name.toLowerCase()) &&
+				name.toLowerCase().includes(inputValue.trim().toLowerCase())
+		)
+		.slice(0, 8);
+	$: if (suggestionsOpen && filteredSuggestionTags.length > 0) {
+		tick().then(positionPopup);
+	}
+
+	const portal = (node: HTMLElement) => {
+		document.body.appendChild(node);
+		return {
+			destroy() {
+				node.remove();
+			}
+		};
+	};
+
+	const positionPopup = () => {
+		if (!inputElement || !popupElement) return;
+		const rect = inputElement.getBoundingClientRect();
+		popupElement.style.top = `${rect.bottom + 4}px`;
+		popupElement.style.left = `${Math.max(8, Math.min(rect.left, window.innerWidth - 200))}px`;
+	};
+
+	const addTag = (tagName = inputValue) => {
+		const value = tagName.trim();
 		if (value !== '') {
-			dispatch('add', value);
+			if (!tagNames.has(value.toLowerCase())) {
+				dispatch('add', value);
+			}
 			inputValue = '';
 		}
+
+		suggestionsOpen = false;
+	};
+
+	const handlePointerDown = (event: PointerEvent) => {
+		if (!suggestionsOpen) return;
+
+		const target = event.target as Node;
+		if (inputElement?.contains(target) || popupElement?.contains(target)) {
+			return;
+		}
+
+		suggestionsOpen = false;
 	};
 </script>
 
+<svelte:window
+	on:pointerdown={handlePointerDown}
+	on:scroll|capture={positionPopup}
+	on:resize={positionPopup}
+/>
+
 <div class="flex flex-wrap items-center gap-1 w-full">
 	<TagList
 		{tags}
@@ -30,18 +86,68 @@
 	/>
 
 	{#if !disabled}
-		<input
-			bind:value={inputValue}
-			class="flex-1 min-w-24 {tags.length > 0
-				? 'px-0.5'
-				: ''} text-xs bg-transparent outline-hidden placeholder:text-gray-400 dark:placeholder:text-gray-500"
-			placeholder={$i18n.t('Add a tag...')}
-			on:keydown={(event) => {
-				if (event.key === 'Enter' || event.key === ' ') {
-					event.preventDefault();
-					addTag();
-				}
-			}}
-		/>
+		<div class="flex-1 min-w-24">
+			<input
+				bind:this={inputElement}
+				bind:value={inputValue}
+				class="w-full {tags.length > 0
+					? 'px-0.5'
+					: ''} text-xs bg-transparent outline-hidden placeholder:text-gray-400 dark:placeholder:text-gray-500"
+				placeholder={$i18n.t('Add a tag...')}
+				role="combobox"
+				aria-autocomplete="list"
+				aria-expanded={suggestionsOpen && filteredSuggestionTags.length > 0}
+				autocomplete="off"
+				on:focus={() => {
+					suggestionsOpen = true;
+					positionPopup();
+				}}
+				on:input={() => {
+					suggestionsOpen = true;
+					positionPopup();
+				}}
+				on:keydown={(event) => {
+					if (event.key === 'Enter' || event.key === ' ') {
+						event.preventDefault();
+						addTag();
+					} else if (event.key === 'Escape') {
+						suggestionsOpen = false;
+					}
+				}}
+				on:blur={() => {
+					setTimeout(() => {
+						if (!popupElement?.contains(document.activeElement)) {
+							suggestionsOpen = false;
+						}
+					}, 0);
+				}}
+			/>
+
+			{#if suggestionsOpen && filteredSuggestionTags.length > 0}
+				<div
+					use:portal
+					bind:this={popupElement}
+					class="fixed w-48 max-h-48 overflow-y-auto rounded-lg border border-gray-200 bg-white p-0.5 shadow-lg dark:border-gray-800 dark:bg-gray-850"
+					role="listbox"
+					style="z-index: 9999; top: 0; left: 0;"
+				>
+					{#each filteredSuggestionTags as tag (tag)}
+						<button
+							type="button"
+							class="flex w-full items-center rounded-md px-2 py-1 text-left text-xs text-gray-700 transition-colors hover:bg-gray-50 dark:text-gray-200 dark:hover:bg-gray-800"
+							role="option"
+							on:mousedown={(event) => {
+								event.preventDefault();
+							}}
+							on:click={() => {
+								addTag(tag);
+							}}
+						>
+							<span class="truncate">{tag}</span>
+						</button>
+					{/each}
+				</div>
+			{/if}
+		</div>
 	{/if}
 </div>
diff --git a/src/lib/components/workspace/Models/ModelEditor.svelte b/src/lib/components/workspace/Models/ModelEditor.svelte
index 27cf77aa46..24bbc75edf 100644
--- a/src/lib/components/workspace/Models/ModelEditor.svelte
+++ b/src/lib/components/workspace/Models/ModelEditor.svelte
@@ -9,6 +9,7 @@
 	import { getSkills } from '$lib/apis/skills';
 	import { getFunctions } from '$lib/apis/functions';
 	import { getModelsDefaults } from '$lib/apis/configs';
+	import { getBaseModelTags, getModelTags } from '$lib/apis/models';
 
 	import AdvancedParams from '$lib/components/chat/Settings/Advanced/AdvancedParams.svelte';
 	import Tags from '$lib/components/common/Tags.svelte';
@@ -106,6 +107,14 @@
 	let accessGrants = [];
 	let terminalId = '';
 	let tts = { voice: '' };
+	export let suggestionTags: { name: string }[] = [];
+
+	const loadSuggestionTags = async () => {
+		const res: string[] = await (preset ? getModelTags : getBaseModelTags)(
+			localStorage.token
+		).catch(() => []);
+		suggestionTags = res.map((tag) => ({ name: tag }));
+	};
 
 	const submitHandler = async () => {
 		loading = true;
@@ -255,6 +264,9 @@
 		if (!$functions) {
 			await functions.set(await getFunctions(localStorage.token));
 		}
+		if (suggestionTags.length === 0) {
+			await loadSuggestionTags();
+		}
 
 		// Fetch admin-configured default model metadata so the editor
 		// reflects the actual defaults rather than hardcoded values
@@ -651,6 +663,7 @@
 								<div class="">
 									<Tags
 										tags={info?.meta?.tags ?? []}
+										{suggestionTags}
 										on:delete={(e) => {
 											const tagName = e.detail;
 											info.meta.tags = info.meta.tags.filter((tag) => tag.name !== tagName);