diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h
index 1ab9dcb..244001f 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h
@@ -41,7 +41,7 @@
 
 // Converts the results of IDevice::prepareModel* to the NN canonical format. On success, this
 // function returns with a non-null nn::SharedPreparedModel with a feature level of
-// nn::Version::ANDROID_OC_MR1. On failure, this function returns with the appropriate
+// nn::kVersionFeatureLevel1. On failure, this function returns with the appropriate
 // nn::GeneralError.
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         ErrorStatus status, const sp<IPreparedModel>& preparedModel);
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h
index ed7c3e7..7710a7e 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h
@@ -28,7 +28,7 @@
 
 namespace android::hardware::neuralnetworks::V1_0::utils {
 
-const auto kVersion = nn::Version::ANDROID_OC_MR1;
+constexpr auto kVersion = nn::kVersionFeatureLevel1;
 
 template <typename Type>
 nn::Result<void> validate(const Type& halObject) {
diff --git a/neuralnetworks/1.0/utils/src/Device.cpp b/neuralnetworks/1.0/utils/src/Device.cpp
index 49913a2..b0c236e 100644
--- a/neuralnetworks/1.0/utils/src/Device.cpp
+++ b/neuralnetworks/1.0/utils/src/Device.cpp
@@ -99,7 +99,7 @@
 }
 
 nn::Version Device::getFeatureLevel() const {
-    return nn::Version::ANDROID_OC_MR1;
+    return kVersion;
 }
 
 nn::DeviceType Device::getType() const {
diff --git a/neuralnetworks/1.0/utils/test/DeviceTest.cpp b/neuralnetworks/1.0/utils/test/DeviceTest.cpp
index e881da2..83e555f 100644
--- a/neuralnetworks/1.0/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.0/utils/test/DeviceTest.cpp
@@ -233,7 +233,7 @@
     const auto featureLevel = device->getFeatureLevel();
 
     // verify result
-    EXPECT_EQ(featureLevel, nn::Version::ANDROID_OC_MR1);
+    EXPECT_EQ(featureLevel, nn::kVersionFeatureLevel1);
 }
 
 TEST(DeviceTest, getCachedData) {
diff --git a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h
index 3aebb93..ff06739 100644
--- a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h
+++ b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h
@@ -30,7 +30,7 @@
 namespace android::hardware::neuralnetworks::V1_1::utils {
 
 constexpr auto kDefaultExecutionPreference = ExecutionPreference::FAST_SINGLE_ANSWER;
-const auto kVersion = nn::Version::ANDROID_P;
+constexpr auto kVersion = nn::kVersionFeatureLevel2;
 
 template <typename Type>
 nn::Result<void> validate(const Type& halObject) {
diff --git a/neuralnetworks/1.1/utils/src/Device.cpp b/neuralnetworks/1.1/utils/src/Device.cpp
index 7d54cab..3effa84 100644
--- a/neuralnetworks/1.1/utils/src/Device.cpp
+++ b/neuralnetworks/1.1/utils/src/Device.cpp
@@ -99,7 +99,7 @@
 }
 
 nn::Version Device::getFeatureLevel() const {
-    return nn::Version::ANDROID_P;
+    return kVersion;
 }
 
 nn::DeviceType Device::getType() const {
diff --git a/neuralnetworks/1.1/utils/test/DeviceTest.cpp b/neuralnetworks/1.1/utils/test/DeviceTest.cpp
index 41e0e30..2248da6 100644
--- a/neuralnetworks/1.1/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.1/utils/test/DeviceTest.cpp
@@ -243,7 +243,7 @@
     const auto featureLevel = device->getFeatureLevel();
 
     // verify result
-    EXPECT_EQ(featureLevel, nn::Version::ANDROID_P);
+    EXPECT_EQ(featureLevel, nn::kVersionFeatureLevel2);
 }
 
 TEST(DeviceTest, getCachedData) {
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h
index 6dd8138..fc04303 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h
@@ -38,7 +38,8 @@
 
 // Converts the results of IDevice::prepareModel* to the NN canonical format. On success, this
 // function returns with a non-null nn::SharedPreparedModel with a feature level of
-// nn::Version::ANDROID_Q. On failure, this function returns with the appropriate nn::GeneralError.
+// nn::kVersionFeatureLevel3. On failure, this function returns with the appropriate
+// nn::GeneralError.
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         V1_0::ErrorStatus status, const sp<IPreparedModel>& preparedModel);
 
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h
index 7ec32e8..a06f2ac 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h
@@ -39,7 +39,7 @@
 constexpr auto kDefaultMesaureTiming = MeasureTiming::NO;
 constexpr auto kNoTiming = Timing{.timeOnDevice = std::numeric_limits<uint64_t>::max(),
                                   .timeInDriver = std::numeric_limits<uint64_t>::max()};
-const auto kVersion = nn::Version::ANDROID_Q;
+constexpr auto kVersion = nn::kVersionFeatureLevel3;
 
 template <typename Type>
 nn::Result<void> validate(const Type& halObject) {
diff --git a/neuralnetworks/1.2/utils/src/Device.cpp b/neuralnetworks/1.2/utils/src/Device.cpp
index f12669a..e7acecd 100644
--- a/neuralnetworks/1.2/utils/src/Device.cpp
+++ b/neuralnetworks/1.2/utils/src/Device.cpp
@@ -192,7 +192,7 @@
 }
 
 nn::Version Device::getFeatureLevel() const {
-    return nn::Version::ANDROID_Q;
+    return kVersion;
 }
 
 nn::DeviceType Device::getType() const {
diff --git a/neuralnetworks/1.2/utils/test/DeviceTest.cpp b/neuralnetworks/1.2/utils/test/DeviceTest.cpp
index 215d44c..1dc6285 100644
--- a/neuralnetworks/1.2/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.2/utils/test/DeviceTest.cpp
@@ -483,7 +483,7 @@
     const auto featureLevel = device->getFeatureLevel();
 
     // verify result
-    EXPECT_EQ(featureLevel, nn::Version::ANDROID_Q);
+    EXPECT_EQ(featureLevel, nn::kVersionFeatureLevel3);
 }
 
 TEST(DeviceTest, getCachedData) {
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h
index 4b8ddc1..10892bc 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h
@@ -47,7 +47,8 @@
 
 // Converts the results of IDevice::prepareModel* to the NN canonical format. On success, this
 // function returns with a non-null nn::SharedPreparedModel with a feature level of
-// nn::Version::ANDROID_R. On failure, this function returns with the appropriate nn::GeneralError.
+// nn::kVersionFeatureLevel4. On failure, this function returns with the appropriate
+// nn::GeneralError.
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         ErrorStatus status, const sp<IPreparedModel>& preparedModel);
 
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h
index 0ea3f29..594d727 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h
@@ -39,7 +39,7 @@
 using V1_2::utils::kNoTiming;
 
 constexpr auto kDefaultPriority = Priority::MEDIUM;
-const auto kVersion = nn::Version::ANDROID_R;
+constexpr auto kVersion = nn::kVersionFeatureLevel4;
 
 template <typename Type>
 nn::Result<void> validate(const Type& halObject) {
diff --git a/neuralnetworks/1.3/utils/src/Device.cpp b/neuralnetworks/1.3/utils/src/Device.cpp
index a73ce82..9517fda 100644
--- a/neuralnetworks/1.3/utils/src/Device.cpp
+++ b/neuralnetworks/1.3/utils/src/Device.cpp
@@ -143,7 +143,7 @@
 }
 
 nn::Version Device::getFeatureLevel() const {
-    return nn::Version::ANDROID_R;
+    return kVersion;
 }
 
 nn::DeviceType Device::getType() const {
diff --git a/neuralnetworks/1.3/utils/test/DeviceTest.cpp b/neuralnetworks/1.3/utils/test/DeviceTest.cpp
index 2d1b2f2..7eba4bc 100644
--- a/neuralnetworks/1.3/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.3/utils/test/DeviceTest.cpp
@@ -505,7 +505,7 @@
     const auto featureLevel = device->getFeatureLevel();
 
     // verify result
-    EXPECT_EQ(featureLevel, nn::Version::ANDROID_R);
+    EXPECT_EQ(featureLevel, nn::kVersionFeatureLevel4);
 }
 
 TEST(DeviceTest, getCachedData) {
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
index 4262ef8..b4e747e 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
@@ -30,18 +30,18 @@
 
 constexpr auto kDefaultPriority = Priority::MEDIUM;
 
-inline std::optional<nn::Version> aidlVersionToCanonicalVersion(int aidlVersion) {
+constexpr std::optional<nn::Version> aidlVersionToCanonicalVersion(int aidlVersion) {
     switch (aidlVersion) {
         case 1:
-            return nn::Version::ANDROID_S;
+            return nn::kVersionFeatureLevel5;
         case 2:
-            return nn::Version::FEATURE_LEVEL_6;
+            return nn::kVersionFeatureLevel6;
         default:
             return std::nullopt;
     }
 }
 
-const auto kVersion = aidlVersionToCanonicalVersion(IDevice::version).value();
+constexpr auto kVersion = aidlVersionToCanonicalVersion(IDevice::version).value();
 
 template <typename Type>
 nn::Result<void> validate(const Type& halObject) {
diff --git a/neuralnetworks/aidl/utils/src/Callbacks.cpp b/neuralnetworks/aidl/utils/src/Callbacks.cpp
index a321477..8084970 100644
--- a/neuralnetworks/aidl/utils/src/Callbacks.cpp
+++ b/neuralnetworks/aidl/utils/src/Callbacks.cpp
@@ -35,7 +35,8 @@
 
 // Converts the results of IDevice::prepareModel* to the NN canonical format. On success, this
 // function returns with a non-null nn::SharedPreparedModel with a feature level of
-// nn::Version::ANDROID_S. On failure, this function returns with the appropriate nn::GeneralError.
+// nn::kVersionFeatureLevel5. On failure, this function returns with the appropriate
+// nn::GeneralError.
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         ErrorStatus status, const std::shared_ptr<IPreparedModel>& preparedModel) {
     HANDLE_STATUS_AIDL(status) << "model preparation failed with " << toString(status);
diff --git a/neuralnetworks/aidl/utils/test/DeviceTest.cpp b/neuralnetworks/aidl/utils/test/DeviceTest.cpp
index 19d2314..4e9fc46 100644
--- a/neuralnetworks/aidl/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/aidl/utils/test/DeviceTest.cpp
@@ -155,7 +155,7 @@
     const nn::Version version = info.param;
     CHECK(!version.runtimeOnlyFeatures);
     switch (version.level) {
-        case nn::Version::Level::ANDROID_S:
+        case nn::Version::Level::FEATURE_LEVEL_5:
             return "v1";
         case nn::Version::Level::FEATURE_LEVEL_6:
             return "v2";
@@ -893,7 +893,7 @@
 }
 
 INSTANTIATE_TEST_SUITE_P(TestDevice, DeviceTest,
-                         ::testing::Values(nn::Version::ANDROID_S, nn::Version::FEATURE_LEVEL_6),
+                         ::testing::Values(nn::kVersionFeatureLevel5, nn::kVersionFeatureLevel6),
                          printDeviceTest);
 
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp b/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp
index 2e93a11..0488b63 100644
--- a/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp
+++ b/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp
@@ -53,7 +53,7 @@
     // Setup default actions for each relevant call.
     constexpr auto getName_ret = []() -> const std::string& { return kName; };
     constexpr auto getVersionString_ret = []() -> const std::string& { return kVersionString; };
-    const auto kFeatureLevel = nn::Version::ANDROID_OC_MR1;
+    constexpr auto kFeatureLevel = nn::kVersionFeatureLevel1;
     constexpr auto kDeviceType = nn::DeviceType::ACCELERATOR;
     constexpr auto getSupportedExtensions_ret = []() -> const std::vector<nn::Extension>& {
         return kExtensions;
@@ -141,7 +141,7 @@
 TEST(ResilientDeviceTest, getFeatureLevel) {
     // setup call
     const auto [mockDevice, mockDeviceFactory, device] = setup();
-    const auto kFeatureLevel = nn::Version::ANDROID_OC_MR1;
+    constexpr auto kFeatureLevel = nn::kVersionFeatureLevel1;
     EXPECT_CALL(*mockDevice, getFeatureLevel()).Times(1).WillOnce(Return(kFeatureLevel));
 
     // run test
@@ -591,7 +591,7 @@
     const auto recoveredMockDevice = createConfiguredMockDevice();
     EXPECT_CALL(*recoveredMockDevice, getFeatureLevel())
             .Times(1)
-            .WillOnce(Return(nn::Version::ANDROID_P));
+            .WillOnce(Return(nn::kVersionFeatureLevel2));
     EXPECT_CALL(*mockDeviceFactory, Call(false)).Times(1).WillOnce(Return(recoveredMockDevice));
 
     // run test