diff --git a/src/lib/components/chat/MessageInput.svelte b/src/lib/components/chat/MessageInput.svelte
index f384c5b8f..cabb35d61 100644
--- a/src/lib/components/chat/MessageInput.svelte
+++ b/src/lib/components/chat/MessageInput.svelte
@@ -42,6 +42,7 @@
 	import FilesOverlay from './MessageInput/FilesOverlay.svelte';
 	import Commands from './MessageInput/Commands.svelte';
 	import ToolServersModal from './ToolServersModal.svelte';
+	import VariableInputModal from './VariableInputModal.svelte';
 
 	import RichTextInput from '../common/RichTextInput.svelte';
 	import Tooltip from '../common/Tooltip.svelte';
@@ -89,6 +90,10 @@
 	export let webSearchEnabled = false;
 	export let codeInterpreterEnabled = false;
 
+	let showVariableInputModal = false;
+	let activePromptVariables = [];
+	const RESERVED_VARIABLES = ['CLIPBOARD', 'USER_LOCATION', 'USER_NAME', 'USER_LANGUAGE', 'CURRENT_DATE', 'CURRENT_TIME', 'CURRENT_DATETIME', 'CURRENT_TIMEZONE', 'CURRENT_WEEKDAY'];
+
 	$: onChange({
 		prompt,
 		files: files
@@ -453,6 +458,18 @@
 		shiftKey = false;
 	};
 
+	const extractCustomVariables = (text: string): string[] => {
+		const regex = /{{\s*(.*?)\s*}}/g;
+		const matches = [];
+		let match;
+		while ((match = regex.exec(text)) !== null) {
+			matches.push(match[1]);
+		}
+		return [...new Set(matches)].filter(v => !RESERVED_VARIABLES.includes(v.toUpperCase()));
+	};
+
+	const variableModalSubtitle = $i18n.t('Your prompt uses the highlighted variables as placeholders');
+
 	onMount(async () => {
 		loaded = true;
 
@@ -496,6 +513,31 @@
 
 <FilesOverlay show={dragged} />
 <ToolServersModal bind:show={showTools} {selectedToolIds} />
+<VariableInputModal
+	bind:show={showVariableInputModal}
+	variables={activePromptVariables}
+	promptRawContent={prompt}
+	subtitle={variableModalSubtitle}
+	on:submit={(e) => {
+		const submittedValues = e.detail;
+		let currentPrompt = prompt;
+		for (const variable in submittedValues) {
+			const value = submittedValues[variable];
+			const regex = new RegExp(`{{\\s*${variable}\\s*}}`, 'g');
+			currentPrompt = currentPrompt.replace(regex, value);
+		}
+		prompt = currentPrompt;
+		showVariableInputModal = false;
+		activePromptVariables = [];
+
+		tick().then(() => {
+			const chatInput = document.getElementById('chat-input');
+			if (chatInput) {
+				chatInput.focus();
+			}
+		});
+	}}
+/>
 
 {#if loaded}
 	<div class="w-full font-primary">
@@ -586,6 +628,15 @@
 							const chatInputElement = document.getElementById('chat-input');
 							chatInputElement?.focus();
 						}}
+						on:promptselectionprocessed={(e) => {
+							const customVars = extractCustomVariables(prompt);
+							if (customVars.length > 0) {
+								activePromptVariables = customVars;
+								showVariableInputModal = true;
+							}
+							const chatInputElement = document.getElementById('chat-input');
+							chatInputElement?.focus();
+						}}
 					/>
 				</div>
 			</div>
diff --git a/src/lib/components/chat/MessageInput/Commands.svelte b/src/lib/components/chat/MessageInput/Commands.svelte
index bcea28d1e..4339456aa 100644
--- a/src/lib/components/chat/MessageInput/Commands.svelte
+++ b/src/lib/components/chat/MessageInput/Commands.svelte
@@ -56,7 +56,8 @@
 {#if show}
 	{#if !loading}
 		{#if command?.charAt(0) === '/'}
-			<Prompts bind:this={commandElement} bind:prompt bind:files {command} />
+			<Prompts bind:this={commandElement} bind:prompt bind:files {command}
+				on:promptapplied={(e) => dispatch('promptselectionprocessed', e.detail)} />
 		{:else if (command?.charAt(0) === '#' && command.startsWith('#') && !command.includes('# ')) || ('\\#' === command.slice(0, 2) && command.startsWith('#') && !command.includes('# '))}
 			<Knowledge
 				bind:this={commandElement}
diff --git a/src/lib/components/chat/MessageInput/Commands/Prompts.svelte b/src/lib/components/chat/MessageInput/Commands/Prompts.svelte
index c6d8bcb82..bd5126cb3 100644
--- a/src/lib/components/chat/MessageInput/Commands/Prompts.svelte
+++ b/src/lib/components/chat/MessageInput/Commands/Prompts.svelte
@@ -9,9 +9,10 @@
 		getUserTimezone,
 		getWeekday
 	} from '$lib/utils';
-	import { tick, getContext } from 'svelte';
+	import { tick, getContext, createEventDispatcher } from 'svelte';
 	import { toast } from 'svelte-sonner';
 
+	const dispatch = createEventDispatcher();
 	const i18n = getContext('i18n');
 
 	export let files;
@@ -166,11 +167,16 @@
 				prompt = fullPrompt;
 				await tick();
 
-				chatInputElement.setSelectionRange(word?.startIndex, word.endIndex + 1);
+				if (chatInputElement instanceof HTMLInputElement || chatInputElement instanceof HTMLTextAreaElement) {
+					chatInputElement.setSelectionRange(word?.startIndex, word.endIndex + 1);
+				}
 			} else {
 				chatInputElement.scrollTop = chatInputElement.scrollHeight;
 			}
 		}
+
+		await tick();
+		dispatch('promptapplied', { finalPromptContent: prompt });
 	};
 </script>
 
diff --git a/src/lib/components/chat/VariableInputModal.svelte b/src/lib/components/chat/VariableInputModal.svelte
new file mode 100644
index 000000000..2de2d6222
--- /dev/null
+++ b/src/lib/components/chat/VariableInputModal.svelte
@@ -0,0 +1,132 @@
+<script lang="ts">
+	import { createEventDispatcher, getContext, onMount } from 'svelte';
+	import Modal from '$lib/components/common/Modal.svelte';
+	import Textarea from '$lib/components/common/Textarea.svelte';
+
+	const dispatch = createEventDispatcher();
+	const i18n = getContext('i18n');
+
+	export let show = false;
+	export let variables: string[] = [];
+	export let subtitle: string = '';
+	export let promptRawContent = '';
+
+	let variableValues: { [key: string]: string } = {};
+
+	$: formattedPromptDisplay = (() => {
+		if (!promptRawContent) {
+			return '';
+		}
+
+		// Escape HTML tags in promptRawContent
+		let escapedPrompt = promptRawContent.replace(/</g, '&lt;').replace(/>/g, '&gt;');
+
+		if (variables && variables.length > 0) {
+			variables.forEach((variable) => {
+				const regex = new RegExp(`{{\\s*${variable}\\s*}}`, 'g');
+				escapedPrompt = escapedPrompt.replace(regex, `<strong>{{${variable}}}</strong>`);
+			});
+		}
+		return escapedPrompt;
+	})();
+
+	$: {
+		const newValues = {};
+		for (const variable of variables) {
+			newValues[variable] = variableValues[variable] || '';
+		}
+		variableValues = newValues;
+	}
+
+	const handleSubmit = () => {
+		dispatch('submit', variableValues);
+		show = false;
+	};
+
+	let modalElement;
+
+	onMount(() => {
+		if (variables.length > 0 && modalElement) {
+			const firstInput = modalElement.querySelector('input, textarea');
+			if (firstInput) {
+				(firstInput as HTMLElement).focus();
+			}
+		}
+	});
+</script>
+
+<Modal bind:show size="lg" containerClassName="p-3" className="bg-white dark:bg-gray-900 rounded-2xl">
+	<div bind:this={modalElement}>
+		<div class="flex justify-between items-center dark:text-gray-300 px-5 pt-4 pb-2">
+			<h2 class="text-lg font-medium self-center">{$i18n.t('Enter Variable Values')}</h2>
+			<button
+				class="self-center text-gray-600 dark:text-gray-400 hover:text-gray-800 dark:hover:text-gray-200"
+				on:click={() => (show = false)}
+				aria-label={$i18n.t('Close')}
+			>
+				<svg
+					xmlns="http://www.w3.org/2000/svg"
+					viewBox="0 0 20 20"
+					fill="currentColor"
+					class="w-5 h-5"
+				>
+					<path
+						d="M6.28 5.22a.75.75 0 00-1.06 1.06L8.94 10l-3.72 3.72a.75.75 0 101.06 1.06L10 11.06l3.72 3.72a.75.75 0 101.06-1.06L11.06 10l3.72-3.72a.75.75 0 00-1.06-1.06L10 8.94 6.28 5.22z"
+					/>
+				</svg>
+			</button>
+		</div>
+		{#if subtitle}
+			<p class="text-sm text-gray-600 dark:text-gray-400 mt-1 px-5">{@html subtitle}</p>
+		{/if}
+
+		{#if promptRawContent}
+			<div
+				class="max-h-56 overflow-y-auto bg-gray-50 dark:bg-gray-800 p-2 rounded-md my-3 text-sm text-gray-700 dark:text-gray-300 whitespace-pre-wrap break-words mx-5"
+			>
+				{@html formattedPromptDisplay}
+			</div>
+		{/if}
+
+		<p class="text-sm text-gray-600 dark:text-gray-400 mt-3 px-5">{$i18n.t('You may replace the placeholder variables with values below. Note that if you do not enter a value, the placeholder will be removed from the text.')}</p>
+
+		<div class="p-5 max-h-[60vh] overflow-y-auto">
+			{#each variables as variable (variable)}
+				<div class="flex flex-col mb-4">
+					<div class="text-sm text-gray-700 dark:text-gray-300">
+						{@html $i18n.t('Insert a value for <strong class="font-semibold text-gray-800 dark:text-gray-100">{{variable}}</strong>', { variable })}
+					</div>
+					<Textarea
+						id="variable-{variable}"
+						class="w-full bg-gray-50 dark:bg-gray-800 border-gray-300 dark:border-gray-700 rounded-md p-2 text-sm dark:text-gray-100 focus:ring-blue-500 focus:border-blue-500 mt-1"
+						placeholder={$i18n.t('Enter value here')}
+						bind:value={variableValues[variable]}
+						rows={2}
+						on:keydown={(e) => {
+							if (e.key === 'Enter' && !e.shiftKey) {
+								e.preventDefault();
+							}
+						}}
+					/>
+				</div>
+			{/each}
+		</div>
+
+		<div class="px-5 py-4 flex justify-end space-x-2">
+			<button
+				type="button"
+				class="px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 bg-gray-100 dark:bg-gray-700 hover:bg-gray-200 dark:hover:bg-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-gray-500"
+				on:click={() => (show = false)}
+			>
+				{$i18n.t('Cancel')}
+			</button>
+			<button
+				type="button"
+				class="px-4 py-2 text-sm font-medium text-white bg-blue-600 hover:bg-blue-700 rounded-lg focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
+				on:click={handleSubmit}
+			>
+				{$i18n.t('Submit')}
+			</button>
+		</div>
+	</div>
+</Modal>