diff --git a/.github/workflows/build-ci-atlas.yml b/.github/workflows/build-ci-atlas.yml
index 24f25da31..fe2a3ed4f 100644
--- a/.github/workflows/build-ci-atlas.yml
+++ b/.github/workflows/build-ci-atlas.yml
@@ -37,6 +37,7 @@ jobs:
 
       - name: Create MongoDB Atlas Local
         timeout-minutes: 5
+
         run: |
           docker run --name mongodb -p 27017:27017 --detach mongodb/mongodb-atlas-local:latest
           until docker exec --tty mongodb mongosh --eval "db.runCommand({ ping: 1 })"; do
@@ -49,6 +50,9 @@ jobs:
           until docker exec --tty mongodb mongosh --eval "db.runCommand({ serverStatus: 1 })"; do
             sleep 1
           done
+          until docker exec --tty mongodb mongosh --eval "db.runCommand({ ping: 1 })"; do
+            sleep 1
+          done
 
       - name: Setup cache environment
         id: extcache
diff --git a/src/Eloquent/DocumentModel.php b/src/Eloquent/DocumentModel.php
index 1ce62c733..b7ff62b0d 100644
--- a/src/Eloquent/DocumentModel.php
+++ b/src/Eloquent/DocumentModel.php
@@ -19,6 +19,7 @@
 use Illuminate\Support\Str;
 use MongoDB\BSON\Binary;
 use MongoDB\BSON\Decimal128;
+use MongoDB\BSON\Document;
 use MongoDB\BSON\ObjectID;
 use MongoDB\BSON\Type;
 use MongoDB\BSON\UTCDateTime;
@@ -37,15 +38,13 @@
 use function func_get_args;
 use function in_array;
 use function is_array;
-use function is_numeric;
-use function is_object;
+use function is_scalar;
 use function is_string;
 use function ltrim;
 use function method_exists;
 use function sprintf;
 use function str_contains;
 use function str_starts_with;
-use function strcmp;
 use function strlen;
 use function trigger_error;
 
@@ -57,6 +56,22 @@ trait DocumentModel
     use HybridRelations;
     use EmbedsRelations;
 
+    /**
+     * Non-scalar, non-date cast types excluded from castAttribute() comparison.
+     * These fall through to BSON Document comparison in originalIsEquivalent().
+     * Date types are excluded separately via isDateAttribute().
+     * Everything else in $primitiveCastTypes produces a scalar and is compared via castAttribute().
+     *
+     * @var list<string>
+     */
+    private static array $nonScalarCastTypes = [
+        'array',
+        'json',
+        'json:unicode',
+        'object',
+        'collection',
+    ];
+
     /**
      * The parent relation instance.
      */
@@ -386,20 +401,33 @@ public function originalIsEquivalent($key)
             return false;
         }
 
-        if ($this->isDateAttribute($key)) {
-            $attribute = $attribute instanceof UTCDateTime ? $this->asDateTime($attribute) : $attribute;
-            $original  = $original instanceof UTCDateTime ? $this->asDateTime($original) : $original;
+        // For primitive casts that produce scalar-comparable values, apply the cast before
+        // comparing. This preserves Eloquent's behavior where int(1) and string('1') are
+        // equivalent on a field cast to int, and where re-assigning the same encrypted
+        // plaintext is not dirty. Non-scalar types (array/object/collection/json) fall through
+        // to BSON comparison. Date types fall through to UTCDateTime conversion below.
+        if (
+            $this->hasCast($key, static::$primitiveCastTypes)
+            && ! $this->isDateAttribute($key)
+            && ! $this->hasCast($key, self::$nonScalarCastTypes)
+        ) {
+            return $this->castAttribute($key, $attribute) === $this->castAttribute($key, $original);
+        }
 
-            // Comparison on DateTimeInterface values
-            // phpcs:disable SlevomatCodingStandard.Operators.DisallowEqualOperators.DisallowedEqualOperator
-            return $attribute == $original;
+        if (is_scalar($attribute) || is_scalar($original)) {
+            return false;
         }
 
-        if ($this->hasCast($key, static::$primitiveCastTypes)) {
-            return $this->castAttribute($key, $attribute) ===
-                $this->castAttribute($key, $original);
+        // Convert DateTime instances to UTCDateTime for comparison.
+        // As done in Grammar::prepareFieldsForQuery()
+        if ($attribute instanceof DateTimeInterface) {
+            $attribute = new UTCDateTime($attribute);
         }
 
+        if ($original instanceof DateTimeInterface) {
+            $original = new UTCDateTime($original);
+        }
+          
         if ($this->isClassComparable($key)) {
             return $this->compareClassCastableAttribute($key, $original, $attribute);
         }
@@ -408,8 +436,9 @@ public function originalIsEquivalent($key)
             return ! is_object($attribute) ? $attribute === $original : $attribute == $original;
         }
 
-        return is_numeric($attribute) && is_numeric($original)
-            && strcmp((string) $attribute, (string) $original) === 0;
+        // phpcs:disable SlevomatCodingStandard.Operators.DisallowEqualOperators.DisallowedEqualOperator
+        return Document::fromPHP(['v' => $attribute]) == Document::fromPHP(['v' => $original]);
+        // phpcs:enable SlevomatCodingStandard.Operators.DisallowEqualOperators.DisallowedEqualOperator
     }
 
     /** @inheritdoc */
diff --git a/tests/ModelGetDirtyTest.php b/tests/ModelGetDirtyTest.php
new file mode 100644
index 000000000..bd4c9fc2c
--- /dev/null
+++ b/tests/ModelGetDirtyTest.php
@@ -0,0 +1,197 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MongoDB\Laravel\Tests;
+
+use Carbon\Carbon;
+use DateTime;
+use MongoDB\Laravel\Tests\Models\Casting;
+use MongoDB\Laravel\Tests\Models\MemberStatus;
+use MongoDB\Laravel\Tests\Models\Options;
+use MongoDB\Laravel\Tests\Models\User;
+
+class ModelGetDirtyTest extends TestCase
+{
+    protected function tearDown(): void
+    {
+        User::truncate();
+        Casting::truncate();
+
+        parent::tearDown();
+    }
+
+    public function testGetDirtyDates(): void
+    {
+        $user = new User();
+        $user->name = 'John Doe';
+        $user->birthday = new DateTime('19 august 1989');
+        $user->syncOriginal();
+
+        // Same date: not dirty
+        $this->assertEmpty($user->getDirty());
+
+        $user->birthday = new DateTime('19 august 1989');
+        // Same date set again: not dirty
+        $this->assertEmpty($user->getDirty());
+    }
+
+    public function testGetDirtyObjects(): void
+    {
+        $user = new User();
+        $user->options = new Options();
+        // New unsaved model: dirty
+        $this->assertNotEmpty($user->getDirty());
+
+        $user->save();
+        // After save: not dirty
+        $this->assertEmpty($user->getDirty());
+
+        // Different object value: dirty
+        $user->options = (new Options())->setOption1('Value1');
+        $this->assertNotEmpty($user->getDirty());
+
+        $user->save();
+        // After save: not dirty
+        $this->assertEmpty($user->getDirty());
+    }
+
+    public function testGetDirtyScalarTypeChange(): void
+    {
+        // Changing a scalar value from one type to another must be considered dirty
+        // because MongoDB stores types as-is (int 1 and string '1' are different).
+        $user = new User();
+        $user->name = 'John Doe';
+        $user->age = 25;
+        $user->syncOriginal();
+
+        $this->assertEmpty($user->getDirty());
+
+        // Same value, same type: not dirty
+        $user->age = 25;
+        $this->assertEmpty($user->getDirty());
+
+        // Same numeric value, different type: dirty
+        $user->age = '25';
+        $this->assertTrue($user->isDirty('age'));
+    }
+
+    public function testGetDirtyEmbeddedDocument(): void
+    {
+        $user = User::create(['name' => 'John Doe', 'address' => ['city' => 'Paris', 'country' => 'France']]);
+
+        $user = User::find($user->id);
+        $this->assertFalse($user->isDirty());
+
+        // Setting the same array value: not dirty
+        $user->address = ['city' => 'Paris', 'country' => 'France'];
+        $this->assertFalse($user->isDirty());
+
+        // Changing a nested value: dirty
+        $user->address = ['city' => 'Lyon', 'country' => 'France'];
+        $this->assertTrue($user->isDirty('address'));
+    }
+
+    public function testGetDirtyDatetimeCast(): void
+    {
+        $user = User::create(['name' => 'John Doe', 'birthday' => new DateTime('1989-08-19 12:00:00')]);
+        $user = User::find($user->id);
+        $this->assertFalse($user->isDirty());
+
+        // Same date via Carbon: not dirty
+        $user->birthday = Carbon::parse('1989-08-19 12:00:00');
+        $this->assertFalse($user->isDirty('birthday'));
+
+        // Same date via DateTime: not dirty
+        $user->birthday = new DateTime('1989-08-19 12:00:00');
+        $this->assertFalse($user->isDirty('birthday'));
+
+        // Different date: dirty
+        $user->birthday = new DateTime('1990-01-01 00:00:00');
+        $this->assertTrue($user->isDirty('birthday'));
+
+        // Null vs date: dirty
+        $user->save();
+        $user->birthday = null;
+        $this->assertTrue($user->isDirty('birthday'));
+    }
+
+    public function testGetDirtyEnumCast(): void
+    {
+        $user = User::create(['name' => 'John Doe', 'member_status' => MemberStatus::Member]);
+        $user = User::find($user->id);
+        $this->assertFalse($user->isDirty());
+
+        // Same enum value: not dirty
+        $user->member_status = MemberStatus::Member;
+        $this->assertFalse($user->isDirty('member_status'));
+
+        // Setting null: dirty
+        $user->member_status = null;
+        $this->assertTrue($user->isDirty('member_status'));
+    }
+
+    public function testGetDirtyWithPrimitiveCast(): void
+    {
+        $casting = Casting::create(['intNumber' => 1, 'floatNumber' => 1.5, 'stringContent' => 'hello', 'booleanValue' => true]);
+        $casting = Casting::find($casting->id);
+        $this->assertFalse($casting->isDirty());
+
+        // Same value, different PHP type: cast normalizes to the same value, so not dirty
+        $casting->intNumber = '1';
+        $this->assertFalse($casting->isDirty('intNumber'));
+
+        $casting->booleanValue = 1;
+        $this->assertFalse($casting->isDirty('booleanValue'));
+
+        // Different effective value: dirty
+        $casting->intNumber = 2;
+        $this->assertTrue($casting->isDirty('intNumber'));
+
+        $casting->floatNumber = 1.6;
+        $this->assertTrue($casting->isDirty('floatNumber'));
+    }
+
+    public function testGetDirtyWithObjectAndArrayCast(): void
+    {
+        $casting = Casting::create(['objectValue' => (object) ['x' => 1], 'arrayValue' => [1, 2, 3]]);
+        $casting = Casting::find($casting->id);
+        $this->assertFalse($casting->isDirty());
+
+        // Same content via different PHP type (array vs stdClass): BSON encoding makes them equivalent
+        $casting->objectValue = (object) ['x' => 1];
+        $this->assertFalse($casting->isDirty('objectValue'));
+
+        $casting->arrayValue = [1, 2, 3];
+        $this->assertFalse($casting->isDirty('arrayValue'));
+
+        // Different content: dirty
+        $casting->objectValue = (object) ['x' => 2];
+        $this->assertTrue($casting->isDirty('objectValue'));
+
+        $casting->arrayValue = [1, 2, 4];
+        $this->assertTrue($casting->isDirty('arrayValue'));
+    }
+
+    public function testGetDirtyDateWithoutCast(): void
+    {
+        // A date field stored as UTCDateTime in MongoDB without an explicit cast.
+        // When reloaded, $original contains a UTCDateTime. Assigning a Carbon/DateTime
+        // triggers the DateTimeInterface -> UTCDateTime conversion before Document::fromPHP ==.
+        $user = User::create(['name' => 'John Doe', 'registered_at' => new DateTime('2024-01-15 12:00:00')]);
+        $user = User::find($user->id);
+        $this->assertFalse($user->isDirty());
+
+        // Same date via Carbon: not dirty
+        $user->registered_at = Carbon::parse('2024-01-15 12:00:00');
+        $this->assertFalse($user->isDirty('registered_at'));
+
+        // Same date via DateTime: not dirty
+        $user->registered_at = new DateTime('2024-01-15 12:00:00');
+        $this->assertFalse($user->isDirty('registered_at'));
+
+        // Different date: dirty
+        $user->registered_at = new DateTime('2024-01-16 00:00:00');
+        $this->assertTrue($user->isDirty('registered_at'));
+    }
+}
diff --git a/tests/ModelTest.php b/tests/ModelTest.php
index 91c267e03..0218f21c1 100644
--- a/tests/ModelTest.php
+++ b/tests/ModelTest.php
@@ -26,7 +26,6 @@
 use MongoDB\Laravel\Tests\Models\Item;
 use MongoDB\Laravel\Tests\Models\MemberStatus;
 use MongoDB\Laravel\Tests\Models\NonIncrementing;
-use MongoDB\Laravel\Tests\Models\Options;
 use MongoDB\Laravel\Tests\Models\Soft;
 use MongoDB\Laravel\Tests\Models\SqlUser;
 use MongoDB\Laravel\Tests\Models\User;
@@ -1056,32 +1055,6 @@ public function testMultipleLevelDotNotation(): void
         $this->assertEquals('The first chapter', $book['chapters.one.title']);
     }
 
-    public function testGetDirtyDates(): void
-    {
-        $user = new User();
-        $user->setRawAttributes(['name' => 'John Doe', 'birthday' => new DateTime('19 august 1989')], true);
-        $this->assertEmpty($user->getDirty());
-
-        $user->birthday = new DateTime('19 august 1989');
-        $this->assertEmpty($user->getDirty());
-    }
-
-    public function testGetDirtyObjects(): void
-    {
-        $user = new User();
-        $user->options = new Options();
-        $this->assertNotEmpty($user->getDirty());
-
-        $user->save();
-        $this->assertEmpty($user->getDirty());
-
-        $user->options = (new Options())->setOption1('Value1');
-        $this->assertNotEmpty($user->getDirty());
-
-        $user->save();
-        $this->assertEmpty($user->getDirty());
-    }
-
     public function testChunkById(): void
     {
         User::create(['name' => 'fork', 'tags' => ['sharp', 'pointy']]);