diff --git a/.changeset/smart-spies-brake.md b/.changeset/smart-spies-brake.md
new file mode 100644
index 0000000000..515834a70d
--- /dev/null
+++ b/.changeset/smart-spies-brake.md
@@ -0,0 +1,6 @@
+---
+"@zag-js/progress": minor
+"@zag-js/qr-code": minor
+---
+
+Add support for `onValueChange` callback
diff --git a/packages/machines/progress/src/index.ts b/packages/machines/progress/src/index.ts
index 338284235e..693c20b864 100644
--- a/packages/machines/progress/src/index.ts
+++ b/packages/machines/progress/src/index.ts
@@ -10,6 +10,7 @@ export type {
   Orientation,
   ProgressState,
   Service,
+  ValueChangeDetails,
   ValueTranslationDetails,
   ViewProps,
 } from "./progress.types"
diff --git a/packages/machines/progress/src/progress.machine.ts b/packages/machines/progress/src/progress.machine.ts
index f4d9fdc837..d102bc94cc 100644
--- a/packages/machines/progress/src/progress.machine.ts
+++ b/packages/machines/progress/src/progress.machine.ts
@@ -1,5 +1,5 @@
 import { createMachine } from "@zag-js/core"
-import { compact, isNumber } from "@zag-js/utils"
+import { compact, isEqual, isNumber } from "@zag-js/utils"
 import type { MachineContext, MachineState, UserDefinedContext } from "./progress.types"
 
 function midValue(min: number, max: number) {
@@ -50,7 +50,7 @@ export function machine(userContext: UserDefinedContext) {
     {
       actions: {
         setValue: (ctx, evt) => {
-          ctx.value = evt.value === null ? null : Math.max(0, Math.min(evt.value, ctx.max))
+          set.value(ctx, evt.value)
         },
         validateContext: (ctx) => {
           if (ctx.value == null) return
@@ -83,3 +83,11 @@ function isValidMax(value: number, max: number) {
 function isValidMin(value: number, min: number) {
   return isValidNumber(value) && value >= min
 }
+
+const set = {
+  value(ctx: MachineContext, value: number | null) {
+    if (isEqual(ctx.value, value)) return
+    ctx.value = value === null ? null : Math.max(0, Math.min(value, ctx.max))
+    ctx.onValueChange?.({ value })
+  },
+}
diff --git a/packages/machines/progress/src/progress.props.ts b/packages/machines/progress/src/progress.props.ts
index 77a767c088..33bf3b1b6c 100644
--- a/packages/machines/progress/src/progress.props.ts
+++ b/packages/machines/progress/src/progress.props.ts
@@ -12,6 +12,7 @@ export const props = createProps<UserDefinedContext>()([
   "orientation",
   "translations",
   "value",
+  "onValueChange",
 ])
 
 export const splitProps = createSplitProps<Partial<UserDefinedContext>>(props)
diff --git a/packages/machines/progress/src/progress.types.ts b/packages/machines/progress/src/progress.types.ts
index 275e473e7d..db46554216 100644
--- a/packages/machines/progress/src/progress.types.ts
+++ b/packages/machines/progress/src/progress.types.ts
@@ -21,6 +21,10 @@ export interface ValueTranslationDetails {
   percent: number
 }
 
+export interface ValueChangeDetails {
+  value: number | null
+}
+
 export interface IntlTranslations {
   value(details: ValueTranslationDetails): string
 }
@@ -60,6 +64,10 @@ interface PublicContext extends DirectionProperty, CommonProperties, Orientation
    * The localized messages to use.
    */
   translations: IntlTranslations
+  /**
+   * Callback fired when the value changes.
+   */
+  onValueChange?: ((details: ValueChangeDetails) => void) | undefined
 }
 
 interface PrivateContext {}
diff --git a/packages/machines/qr-code/src/index.ts b/packages/machines/qr-code/src/index.ts
index b108783354..2442b38661 100644
--- a/packages/machines/qr-code/src/index.ts
+++ b/packages/machines/qr-code/src/index.ts
@@ -9,4 +9,5 @@ export type {
   QrCodeGenerateOptions,
   QrCodeGenerateResult,
   Service,
+  ValueChangeDetails,
 } from "./qr-code.types"
diff --git a/packages/machines/qr-code/src/qr-code.machine.ts b/packages/machines/qr-code/src/qr-code.machine.ts
index 1e91e4bfec..b4222c1d63 100644
--- a/packages/machines/qr-code/src/qr-code.machine.ts
+++ b/packages/machines/qr-code/src/qr-code.machine.ts
@@ -1,5 +1,5 @@
 import { createMachine } from "@zag-js/core"
-import { compact } from "@zag-js/utils"
+import { compact, isEqual } from "@zag-js/utils"
 import { memoize } from "proxy-memoize"
 import { encode } from "uqr"
 import type { MachineContext, MachineState, UserDefinedContext } from "./qr-code.types"
@@ -28,10 +28,18 @@ export function machine(userContext: UserDefinedContext) {
     },
     {
       actions: {
-        setValue: (ctx, e) => {
-          ctx.value = e.value
+        setValue(ctx, evt) {
+          set.value(ctx, evt.value)
         },
       },
     },
   )
 }
+
+const set = {
+  value(ctx: MachineContext, value: string) {
+    if (isEqual(ctx.value, value)) return
+    ctx.value = value
+    ctx.onValueChange?.({ value })
+  },
+}
diff --git a/packages/machines/qr-code/src/qr-code.props.ts b/packages/machines/qr-code/src/qr-code.props.ts
index d26cc115b1..a3a6848616 100644
--- a/packages/machines/qr-code/src/qr-code.props.ts
+++ b/packages/machines/qr-code/src/qr-code.props.ts
@@ -2,6 +2,14 @@ import { createProps } from "@zag-js/types"
 import { createSplitProps } from "@zag-js/utils"
 import type { UserDefinedContext } from "./qr-code.types"
 
-export const props = createProps<UserDefinedContext>()(["ids", "value", "id", "encoding", "dir", "getRootNode"])
+export const props = createProps<UserDefinedContext>()([
+  "ids",
+  "value",
+  "id",
+  "encoding",
+  "dir",
+  "getRootNode",
+  "onValueChange",
+])
 
 export const splitProps = createSplitProps<Partial<UserDefinedContext>>(props)
diff --git a/packages/machines/qr-code/src/qr-code.types.ts b/packages/machines/qr-code/src/qr-code.types.ts
index 86a4cdc46a..ee248596f5 100644
--- a/packages/machines/qr-code/src/qr-code.types.ts
+++ b/packages/machines/qr-code/src/qr-code.types.ts
@@ -8,6 +8,10 @@ export type ElementIds = Partial<{
   frame: string
 }>
 
+export interface ValueChangeDetails {
+  value: string
+}
+
 interface PublicContext extends DirectionProperty, CommonProperties {
   /**
    * The value to encode.
@@ -21,6 +25,10 @@ interface PublicContext extends DirectionProperty, CommonProperties {
    * The qr code encoding options.
    */
   encoding?: QrCodeGenerateOptions | undefined
+  /**
+   * Callback fired when the value changes.
+   */
+  onValueChange?: ((details: ValueChangeDetails) => void) | undefined
 }
 
 interface PrivateContext {