diff --git a/.changeset/cool-rats-cheat.md b/.changeset/cool-rats-cheat.md
new file mode 100644
index 00000000..03c89e38
--- /dev/null
+++ b/.changeset/cool-rats-cheat.md
@@ -0,0 +1,6 @@
+---
+'@clack/prompts': minor
+'@clack/core': minor
+---
+
+Allow `async` validation, add new `validate` state while validation is pending
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index db26c399..a3864caa 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -3,7 +3,7 @@ export { default as GroupMultiSelectPrompt } from './prompts/group-multiselect';
 export { default as MultiSelectPrompt } from './prompts/multi-select';
 export { default as PasswordPrompt } from './prompts/password';
 export { default as Prompt, isCancel } from './prompts/prompt';
-export type { State } from './prompts/prompt';
+export type { State, Validator } from './prompts/prompt';
 export { default as SelectPrompt } from './prompts/select';
 export { default as SelectKeyPrompt } from './prompts/select-key';
 export { default as TextPrompt } from './prompts/text';
diff --git a/packages/core/src/prompts/prompt.ts b/packages/core/src/prompts/prompt.ts
index 21ee0077..10f3ae16 100644
--- a/packages/core/src/prompts/prompt.ts
+++ b/packages/core/src/prompts/prompt.ts
@@ -7,6 +7,8 @@ import { WriteStream } from 'node:tty';
 import { cursor, erase } from 'sisteransi';
 import wrap from 'wrap-ansi';
 
+const VALIDATION_STATE_DELAY = 400;
+
 function diffLines(a: string, b: string) {
 	if (a === b) return;
 
@@ -21,6 +23,26 @@ function diffLines(a: string, b: string) {
 	return diff;
 }
 
+function raceTimeout<Value>(
+	promise: Promise<Value>,
+	{ onTimeout, delay }: { onTimeout(): void; delay: number }
+) {
+	let timer: NodeJS.Timeout;
+
+	return Promise.race([
+		new Promise<void>((resolve) => {
+			timer = setTimeout(() => {
+				onTimeout();
+				resolve();
+			}, delay);
+		}),
+		promise.then((value) => {
+			clearTimeout(timer);
+			return value;
+		}),
+	]);
+}
+
 const cancel = Symbol('clack:cancel');
 export function isCancel(value: unknown): value is symbol {
 	return value === cancel;
@@ -38,17 +60,21 @@ const aliases = new Map([
 ]);
 const keys = new Set(['up', 'down', 'left', 'right', 'space', 'enter']);
 
+export interface Validator<Value = any> {
+	(value: Value): string | void | Promise<string | void>;
+}
+
 export interface PromptOptions<Self extends Prompt> {
 	render(this: Omit<Self, 'prompt'>): string | void;
 	placeholder?: string;
 	initialValue?: any;
-	validate?: ((value: any) => string | void) | undefined;
+	validate?: Validator;
 	input?: Readable;
 	output?: Writable;
 	debug?: boolean;
 }
 
-export type State = 'initial' | 'active' | 'cancel' | 'submit' | 'error';
+export type State = 'initial' | 'active' | 'cancel' | 'validate' | 'submit' | 'error';
 
 export default class Prompt {
 	protected input: Readable;
@@ -153,7 +179,7 @@ export default class Prompt {
 		this.subscribers.clear();
 	}
 
-	private onKeypress(char: string, key?: Key) {
+	private async onKeypress(char: string, key?: Key) {
 		if (this.state === 'error') {
 			this.state = 'active';
 		}
@@ -172,7 +198,17 @@ export default class Prompt {
 
 		if (key?.name === 'return') {
 			if (this.opts.validate) {
-				const problem = this.opts.validate(this.value);
+				this.state = 'validate';
+				const validation = Promise.resolve(this.opts.validate(this.value));
+				// Delay rendering of validation state.
+				// If validation resolves first, render will be cancelled.
+				await raceTimeout(validation, {
+					onTimeout: () => {
+						this.render();
+					},
+					delay: VALIDATION_STATE_DELAY,
+				});
+				const problem = await validation;
 				if (problem) {
 					this.error = problem;
 					this.state = 'error';
diff --git a/packages/prompts/src/index.ts b/packages/prompts/src/index.ts
index d10f34ce..7ac5e5f1 100644
--- a/packages/prompts/src/index.ts
+++ b/packages/prompts/src/index.ts
@@ -9,6 +9,7 @@ import {
 	SelectPrompt,
 	State,
 	TextPrompt,
+	Validator,
 } from '@clack/core';
 import isUnicodeSupported from 'is-unicode-supported';
 import color from 'picocolors';
@@ -19,6 +20,7 @@ export { isCancel } from '@clack/core';
 const unicode = isUnicodeSupported();
 const s = (c: string, fallback: string) => (unicode ? c : fallback);
 const S_STEP_ACTIVE = s('◆', '*');
+const S_STEP_VALIDATE = S_STEP_ACTIVE;
 const S_STEP_CANCEL = s('■', 'x');
 const S_STEP_ERROR = s('▲', 'x');
 const S_STEP_SUBMIT = s('◇', 'o');
@@ -49,6 +51,8 @@ const symbol = (state: State) => {
 		case 'initial':
 		case 'active':
 			return color.cyan(S_STEP_ACTIVE);
+		case 'validate':
+			return color.cyan(S_STEP_VALIDATE);
 		case 'cancel':
 			return color.red(S_STEP_CANCEL);
 		case 'error':
@@ -63,7 +67,7 @@ export interface TextOptions {
 	placeholder?: string;
 	defaultValue?: string;
 	initialValue?: string;
-	validate?: (value: string) => string | void;
+	validate?: Validator<string>;
 }
 export const text = (opts: TextOptions) => {
 	return new TextPrompt({
@@ -79,6 +83,10 @@ export const text = (opts: TextOptions) => {
 			const value = !this.value ? placeholder : this.valueWithCursor;
 
 			switch (this.state) {
+				case 'validate':
+					return `${title}${color.cyan(S_BAR)}  ${value}\n${color.cyan(S_BAR_END)}  ${color.dim(
+						'Validating...'
+					)}\n`;
 				case 'error':
 					return `${title.trim()}\n${color.yellow(S_BAR)}  ${value}\n${color.yellow(
 						S_BAR_END
@@ -99,7 +107,7 @@ export const text = (opts: TextOptions) => {
 export interface PasswordOptions {
 	message: string;
 	mask?: string;
-	validate?: (value: string) => string | void;
+	validate?: Validator<string>;
 }
 export const password = (opts: PasswordOptions) => {
 	return new PasswordPrompt({
@@ -111,6 +119,10 @@ export const password = (opts: PasswordOptions) => {
 			const masked = this.masked;
 
 			switch (this.state) {
+				case 'validate':
+					return `${title}${color.cyan(S_BAR)}  ${masked}\n${color.cyan(S_BAR_END)}  ${color.dim(
+						'Validating...'
+					)}\n`;
 				case 'error':
 					return `${title.trim()}\n${color.yellow(S_BAR)}  ${masked}\n${color.yellow(
 						S_BAR_END