diff --git a/packages/toolkit/src/lib/use-instill-form/components/regular/ImagesField.tsx b/packages/toolkit/src/lib/use-instill-form/components/regular/ImagesField.tsx
index e32c57f3d..a89f13408 100644
--- a/packages/toolkit/src/lib/use-instill-form/components/regular/ImagesField.tsx
+++ b/packages/toolkit/src/lib/use-instill-form/components/regular/ImagesField.tsx
@@ -2,7 +2,11 @@
 
 import * as React from "react";
 import { Form, ScrollArea } from "@instill-ai/design-system";
-import { AutoFormFieldBaseProps, fillArrayWithZeros } from "../../..";
+import {
+  AutoFormFieldBaseProps,
+  GeneralRecord,
+  fillArrayWithZeros,
+} from "../../..";
 import { readFileToBinary } from "../../../../view";
 import { UploadFileInput } from "../trigger-request-form-fields/UploadFileInput";
 import { FileListItem } from "../trigger-request-form-fields/FileListItem";
@@ -19,8 +23,10 @@ export const ImagesField = ({
   isRequired,
   size,
   shortDescription,
+  instillModelPromptImageBase64ObjectFormat,
 }: AutoFormFieldBaseProps & {
   shortDescription?: string;
+  instillModelPromptImageBase64ObjectFormat?: boolean;
 }) => {
   const [imageFiles, setImageFiles] = React.useState<File[]>([]);
   const inputRef = React.useRef<HTMLInputElement>(null);
@@ -78,13 +84,27 @@ export const ImagesField = ({
                   onChange={async (e) => {
                     if (e.target.files && e.target.files.length > 0) {
                       const files: File[] = [];
-                      const binaries: string[] = [];
-                      for (const file of e.target.files) {
-                        const binary = await readFileToBinary(file);
-                        files.push(file);
-                        binaries.push(binary);
+
+                      if (instillModelPromptImageBase64ObjectFormat) {
+                        const binaries: GeneralRecord[] = [];
+                        for (const file of e.target.files) {
+                          const binary = await readFileToBinary(file);
+                          files.push(file);
+                          binaries.push({
+                            prompt_image_base64: binary,
+                          });
+                        }
+                        field.onChange(binaries);
+                      } else {
+                        const binaries: string[] = [];
+                        for (const file of e.target.files) {
+                          const binary = await readFileToBinary(file);
+                          files.push(file);
+                          binaries.push(binary);
+                        }
+                        field.onChange(binaries);
                       }
-                      field.onChange(binaries);
+
                       setImageFiles((prev) => [...prev, ...files]);
                     }
                   }}
diff --git a/packages/toolkit/src/lib/use-instill-form/pick/pickRegularFieldsFromInstillFormTree.tsx b/packages/toolkit/src/lib/use-instill-form/pick/pickRegularFieldsFromInstillFormTree.tsx
index e0c550972..0d75dc5e5 100644
--- a/packages/toolkit/src/lib/use-instill-form/pick/pickRegularFieldsFromInstillFormTree.tsx
+++ b/packages/toolkit/src/lib/use-instill-form/pick/pickRegularFieldsFromInstillFormTree.tsx
@@ -288,6 +288,9 @@ export function pickRegularFieldsFromInstillFormTree(
             size={size}
             isHidden={tree.isHidden}
             isRequired={tree.isRequired}
+            instillModelPromptImageBase64ObjectFormat={
+              tree.instillModelPromptImageBase64ObjectFormat
+            }
           />
         );
       }
diff --git a/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToFormTree.ts b/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToFormTree.ts
index 7c58b8bd8..b9ccbb2e0 100644
--- a/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToFormTree.ts
+++ b/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToFormTree.ts
@@ -368,6 +368,7 @@ const baseFields: Array<keyof InstillJSONSchema> = [
   "patternProperties",
   "instillCredentialMap",
   "instillCredential",
+  "instillModelPromptImageBase64ObjectFormat",
 ];
 
 function pickBaseFields(
diff --git a/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToZod.ts b/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToZod.ts
index 23199a5d1..c537cf193 100644
--- a/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToZod.ts
+++ b/packages/toolkit/src/lib/use-instill-form/transform/transformInstillJSONSchemaToZod.ts
@@ -467,10 +467,24 @@ export function transformInstillJSONSchemaToZod({
       targetSchema.instillAcceptFormats.length > 0
     ) {
       if (targetSchema.instillAcceptFormats[0].includes("array:image")) {
-        instillZodSchema = instillZodSchema = z
-          .array(z.string().nullable().optional())
-          .nullable()
-          .optional();
+        // model trigger have a special format for images field. We need to
+        // adapt it.
+
+        if (targetSchema.instillModelPromptImageBase64ObjectFormat) {
+          instillZodSchema = instillZodSchema = z
+            .array(
+              z.object({
+                prompt_image_base64: z.string(),
+              })
+            )
+            .nullable()
+            .optional();
+        } else {
+          instillZodSchema = instillZodSchema = z
+            .array(z.string().nullable().optional())
+            .nullable()
+            .optional();
+        }
 
         if (isHidden) {
           instillZodSchema = z.any();
diff --git a/packages/toolkit/src/lib/use-instill-form/types.ts b/packages/toolkit/src/lib/use-instill-form/types.ts
index f7a7f51d3..4f26a4371 100644
--- a/packages/toolkit/src/lib/use-instill-form/types.ts
+++ b/packages/toolkit/src/lib/use-instill-form/types.ts
@@ -21,6 +21,7 @@ export type InstillCustomProps = {
   instillPatternErrorMessage?: string;
   instillCredentialMap?: InstillCredentialMap;
   instillCredential?: boolean;
+  instillModelPromptImageBase64ObjectFormat?: boolean;
 };
 
 export type InstillCredentialMap = {