diff --git a/app/javascript/mastodon/components/callout/redesign.module.scss b/app/javascript/mastodon/components/callout/redesign.module.scss
new file mode 100644
index 00000000000..08917807b14
--- /dev/null
+++ b/app/javascript/mastodon/components/callout/redesign.module.scss
@@ -0,0 +1,28 @@
+@use '@/styles/mastodon/mixins';
+
+.rootLarge,
+.rootSmall {
+  align-items: center;
+  background-color: var(--color-bg-highlight);
+  border-radius: var(--radius-sm);
+  box-sizing: border-box;
+  display: flex;
+  gap: var(--space-xs);
+}
+
+.rootLarge {
+  padding: var(--space-sm);
+}
+
+.rootSmall {
+  padding: var(--space-xs);
+}
+
+.textWrapper {
+  flex-grow: 1;
+}
+
+.icon {
+  width: var(--space-lg);
+  height: var(--space-lg);
+}
diff --git a/app/javascript/mastodon/components/callout/redesign.stories.tsx b/app/javascript/mastodon/components/callout/redesign.stories.tsx
new file mode 100644
index 00000000000..2a91f5be9a6
--- /dev/null
+++ b/app/javascript/mastodon/components/callout/redesign.stories.tsx
@@ -0,0 +1,58 @@
+import { InfoIcon } from '@phosphor-icons/react';
+import type { Meta, StoryObj } from '@storybook/react-vite';
+import { fn } from 'storybook/test';
+
+import type { CalloutProps } from './redesign';
+import { Callout } from './redesign';
+
+const meta = {
+  title: 'Redesign/Callout',
+  render(props) {
+    const actionProps = props.actionText
+      ? fn().mockName('actionClick')
+      : undefined;
+    const secondaryActionProps = props.secondaryActionText
+      ? fn().mockName('secondaryActionClick')
+      : undefined;
+    return (
+      <Callout
+        {...props}
+        {...actionProps}
+        {...secondaryActionProps}
+        icon={props.hasIcon ? InfoIcon : undefined}
+      />
+    );
+  },
+  args: {
+    children: 'Main text goes here',
+    actionText: 'Action 1',
+    secondaryActionText: 'Action 2',
+    hasIcon: false,
+  },
+  argTypes: {
+    children: { control: 'text' },
+    size: { control: 'inline-radio', options: ['sm', 'lg'] },
+    actionText: { control: 'text' },
+    secondaryActionText: { control: 'text', if: { arg: 'size', neq: 'sm' } },
+    hasIcon: { control: 'boolean', if: { arg: 'size', neq: 'sm' } },
+  },
+} satisfies Meta<
+  CalloutProps<React.ElementType> & {
+    as?: never;
+    hasIcon?: boolean;
+    children: string;
+  }
+>;
+
+export default meta;
+
+type Story = StoryObj<typeof meta>;
+
+export const Large: Story = {
+  args: {
+    size: 'lg',
+    hasIcon: true,
+  },
+};
+
+export const Small: Story = { args: { size: 'sm' } };
diff --git a/app/javascript/mastodon/components/callout/redesign.tsx b/app/javascript/mastodon/components/callout/redesign.tsx
new file mode 100644
index 00000000000..982e50a1420
--- /dev/null
+++ b/app/javascript/mastodon/components/callout/redesign.tsx
@@ -0,0 +1,95 @@
+import type React from 'react';
+
+import classNames from 'classnames';
+
+import { Button } from '../button/redesign';
+import { Icon } from '../icon';
+import type { IconProp } from '../icon';
+
+import classes from './redesign.module.scss';
+
+type RenameKeysStartingWith<
+  TObject extends Record<string, unknown>,
+  TPrefix extends string,
+  TReplacement extends string,
+> = {
+  [TKey in keyof TObject as TKey extends `${TPrefix}${infer TSuffix}`
+    ? `${TReplacement}${TSuffix}`
+    : TKey]: TObject[TKey];
+};
+
+type ActionProps =
+  | { actionClick: () => void; actionText: React.ReactNode }
+  | { actionClick?: never; actionText?: never };
+
+type MiniCalloutProps = {
+  size: 'sm';
+} & ActionProps;
+
+type LargeCalloutProps = {
+  size?: 'lg';
+  icon?: IconProp;
+} & (
+  | (ActionProps & {
+      secondaryActionClick?: never;
+      secondaryActionText?: never;
+    })
+  | (Required<ActionProps> &
+      RenameKeysStartingWith<ActionProps, 'action', 'secondaryAction'>)
+);
+
+export type CalloutProps<As extends React.ElementType> = (
+  | MiniCalloutProps
+  | LargeCalloutProps
+) & {
+  as?: As;
+  children: React.ReactNode;
+  className?: string;
+} & React.ComponentPropsWithoutRef<As>;
+
+export const Callout = <As extends React.ElementType>({
+  as: asComp,
+  size,
+  children,
+  className,
+  actionText,
+  actionClick,
+  ...props
+}: CalloutProps<As>) => {
+  const Comp = asComp ?? 'div';
+
+  const wrappedChildren = <div className={classes.textWrapper}>{children}</div>;
+
+  const actionButton = actionText ? (
+    <Button onClick={actionClick} size={size === 'sm' ? 'xs' : 'sm'}>
+      {actionText}
+    </Button>
+  ) : null;
+
+  if (size === 'sm') {
+    return (
+      <Comp {...props} className={classNames(className, classes.rootSmall)}>
+        {wrappedChildren}
+        {actionButton}
+      </Comp>
+    );
+  }
+
+  const { icon, secondaryActionClick, secondaryActionText, ...restProps } =
+    props;
+
+  const secondaryButton = secondaryActionText ? (
+    <Button onClick={secondaryActionClick} size='sm' variant='ghost'>
+      {secondaryActionText}
+    </Button>
+  ) : null;
+
+  return (
+    <Comp {...restProps} className={classNames(className, classes.rootLarge)}>
+      {icon && <Icon icon={icon} className={classes.icon} />}
+      {wrappedChildren}
+      {actionButton}
+      {secondaryButton}
+    </Comp>
+  );
+};
diff --git a/app/javascript/mastodon/components/icon.tsx b/app/javascript/mastodon/components/icon.tsx
index f93e3757a38..688a5a5781f 100644
--- a/app/javascript/mastodon/components/icon.tsx
+++ b/app/javascript/mastodon/components/icon.tsx
@@ -11,7 +11,7 @@ export type IconProp = React.FC<SVGPropsWithTitle>;
 
 interface Props extends React.SVGProps<SVGSVGElement> {
   children?: never;
-  id: string;
+  id?: string;
   icon: IconProp;
   noFill?: boolean;
 }
@@ -46,7 +46,7 @@ export const Icon: React.FC<Props> = ({
     <IconComponent
       className={classNames(
         'icon',
-        `icon-${id}`,
+        id && `icon-${id}`,
         noFill && 'icon--no-fill',
         className,
       )}