diff --git a/docs/pages/material-ui/api/input.json b/docs/pages/material-ui/api/input.json
index f943d9313d4dc3..1c34962f7aec6b 100644
--- a/docs/pages/material-ui/api/input.json
+++ b/docs/pages/material-ui/api/input.json
@@ -115,25 +115,29 @@
       "key": "inputAdornedEnd",
       "className": "MuiInput-inputAdornedEnd",
       "description": "Styles applied to the input element if `endAdornment` is provided.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputAdornedStart",
       "className": "MuiInput-inputAdornedStart",
       "description": "Styles applied to the input element if `startAdornment` is provided.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputMultiline",
       "className": "MuiInput-inputMultiline",
       "description": "Styles applied to the input element if `multiline={true}`.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputSizeSmall",
       "className": "MuiInput-inputSizeSmall",
       "description": "Styles applied to the input element if `size=\"small\"`.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputTypeSearch",
diff --git a/docs/pages/material-ui/api/outlined-input.json b/docs/pages/material-ui/api/outlined-input.json
index 706ba04b753e84..d607f62df123b9 100644
--- a/docs/pages/material-ui/api/outlined-input.json
+++ b/docs/pages/material-ui/api/outlined-input.json
@@ -119,25 +119,29 @@
       "key": "inputAdornedEnd",
       "className": "MuiOutlinedInput-inputAdornedEnd",
       "description": "Styles applied to the input element if `endAdornment` is provided.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputAdornedStart",
       "className": "MuiOutlinedInput-inputAdornedStart",
       "description": "Styles applied to the input element if `startAdornment` is provided.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputMultiline",
       "className": "MuiOutlinedInput-inputMultiline",
       "description": "Styles applied to the input element if `multiline={true}`.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputSizeSmall",
       "className": "MuiOutlinedInput-inputSizeSmall",
       "description": "Styles applied to the input element if `size=\"small\"`.",
-      "isGlobal": false
+      "isGlobal": false,
+      "isDeprecated": true
     },
     {
       "key": "inputTypeSearch",
diff --git a/docs/translations/api-docs/input/input.json b/docs/translations/api-docs/input/input.json
index 06c54efee982ff..70c54a95923e09 100644
--- a/docs/translations/api-docs/input/input.json
+++ b/docs/translations/api-docs/input/input.json
@@ -120,22 +120,26 @@
     "inputAdornedEnd": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>endAdornment</code> is provided"
+      "conditions": "<code>endAdornment</code> is provided",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-adornedEnd\">.MuiInputBase-adornedEnd</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputAdornedStart": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>startAdornment</code> is provided"
+      "conditions": "<code>startAdornment</code> is provided",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-adornedStart\">.MuiInputBase-adornedStart</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputMultiline": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>multiline={true}</code>"
+      "conditions": "<code>multiline={true}</code>",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-multiline\">.MuiInputBase-multiline</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputSizeSmall": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>size=\"small\"</code>"
+      "conditions": "<code>size=\"small\"</code>",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-sizeSmall\">.MuiInputBase-sizeSmall</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputTypeSearch": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
diff --git a/docs/translations/api-docs/outlined-input/outlined-input.json b/docs/translations/api-docs/outlined-input/outlined-input.json
index e64d400f17bb4a..5b19f5d60a34b7 100644
--- a/docs/translations/api-docs/outlined-input/outlined-input.json
+++ b/docs/translations/api-docs/outlined-input/outlined-input.json
@@ -116,22 +116,26 @@
     "inputAdornedEnd": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>endAdornment</code> is provided"
+      "conditions": "<code>endAdornment</code> is provided",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-adornedEnd\">.MuiInputBase-adornedEnd</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputAdornedStart": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>startAdornment</code> is provided"
+      "conditions": "<code>startAdornment</code> is provided",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-adornedStart\">.MuiInputBase-adornedStart</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputMultiline": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>multiline={true}</code>"
+      "conditions": "<code>multiline={true}</code>",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-multiline\">.MuiInputBase-multiline</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputSizeSmall": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
       "nodeName": "the input element",
-      "conditions": "<code>size=\"small\"</code>"
+      "conditions": "<code>size=\"small\"</code>",
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/input-base/#inputbase-classes-input\">.MuiInputBase-input</a> and <a href=\"/material-ui/api/input-base/#inputbase-classes-sizeSmall\">.MuiInputBase-sizeSmall</a> classes instead. See <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">Migrating from deprecated APIs</a> for more details."
     },
     "inputTypeSearch": {
       "description": "Styles applied to {{nodeName}} if {{conditions}}.",
diff --git a/packages/mui-material/src/Input/inputClasses.ts b/packages/mui-material/src/Input/inputClasses.ts
index 90fadc1ea5d204..b3de07c1c9ece1 100644
--- a/packages/mui-material/src/Input/inputClasses.ts
+++ b/packages/mui-material/src/Input/inputClasses.ts
@@ -25,13 +25,21 @@ export interface InputClasses {
   fullWidth: string;
   /** Styles applied to the input element. */
   input: string;
-  /** Styles applied to the input element if `size="small"`. */
+  /** Styles applied to the input element if `size="small"`.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-sizeSmall](/material-ui/api/input-base/#inputbase-classes-sizeSmall) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputSizeSmall: string;
-  /** Styles applied to the input element if `multiline={true}`. */
+  /** Styles applied to the input element if `multiline={true}`.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-multiline](/material-ui/api/input-base/#inputbase-classes-multiline) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputMultiline: string;
-  /** Styles applied to the input element if `startAdornment` is provided. */
+  /** Styles applied to the input element if `startAdornment` is provided.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-adornedStart](/material-ui/api/input-base/#inputbase-classes-adornedStart) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputAdornedStart: string;
-  /** Styles applied to the input element if `endAdornment` is provided. */
+  /** Styles applied to the input element if `endAdornment` is provided.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-adornedEnd](/material-ui/api/input-base/#inputbase-classes-adornedEnd) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputAdornedEnd: string;
   /** Styles applied to the input element if `type="search"`. */
   inputTypeSearch: string;
diff --git a/packages/mui-material/src/OutlinedInput/outlinedInputClasses.ts b/packages/mui-material/src/OutlinedInput/outlinedInputClasses.ts
index c9a1d68391b911..79f9f427ca6de3 100644
--- a/packages/mui-material/src/OutlinedInput/outlinedInputClasses.ts
+++ b/packages/mui-material/src/OutlinedInput/outlinedInputClasses.ts
@@ -25,13 +25,21 @@ export interface OutlinedInputClasses {
   notchedOutline: string;
   /** Styles applied to the input element. */
   input: string;
-  /** Styles applied to the input element if `size="small"`. */
+  /** Styles applied to the input element if `size="small"`.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-sizeSmall](/material-ui/api/input-base/#inputbase-classes-sizeSmall) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputSizeSmall: string;
-  /** Styles applied to the input element if `multiline={true}`. */
+  /** Styles applied to the input element if `multiline={true}`.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-multiline](/material-ui/api/input-base/#inputbase-classes-multiline) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputMultiline: string;
-  /** Styles applied to the input element if `startAdornment` is provided. */
+  /** Styles applied to the input element if `startAdornment` is provided.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-adornedStart](/material-ui/api/input-base/#inputbase-classes-adornedStart) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputAdornedStart: string;
-  /** Styles applied to the input element if `endAdornment` is provided. */
+  /** Styles applied to the input element if `endAdornment` is provided.
+   * @deprecated Combine the [.MuiInputBase-input](/material-ui/api/input-base/#inputbase-classes-input) and [.MuiInputBase-adornedEnd](/material-ui/api/input-base/#inputbase-classes-adornedEnd) classes instead. See [Migrating from deprecated APIs](/material-ui/migration/migrating-from-deprecated-apis/) for more details.
+   */
   inputAdornedEnd: string;
   /** Styles applied to the input element if `type="search"`. */
   inputTypeSearch: string;