diff --git a/.github/workflows/artifact-size-metrics.yml b/.github/workflows/artifact-size-metrics.yml
deleted file mode 100644
index f57dde00b..000000000
--- a/.github/workflows/artifact-size-metrics.yml
+++ /dev/null
@@ -1,86 +0,0 @@
-name: Artifact Size Metrics
-on:
-  pull_request:
-    types: [ opened, synchronize, reopened, labeled, unlabeled ]
-    branches:
-      - main
-      - '*-main'
-  release:
-    types: [published]
-
-permissions:
-  id-token: write
-  contents: read
-  pull-requests: write
-
-jobs:
-  release-metrics:
-    if: github.event_name == 'release'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Sources
-        uses: actions/checkout@v4
-      - name: Configure JDK
-        uses: actions/setup-java@v3
-        with:
-          distribution: 'corretto'
-          java-version: 17
-          cache: 'gradle'
-      - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v4
-        with:
-          role-to-assume: ${{ secrets.CI_AWS_ROLE_ARN }}
-          aws-region: us-west-2
-      - name: Configure Gradle
-        uses: aws/aws-kotlin-repo-tools/.github/actions/configure-gradle@main
-      - name: Generate Artifact Size Metrics
-        run: ./gradlew artifactSizeMetrics
-      - name: Save Artifact Size Metrics
-        run: ./gradlew saveArtifactSizeMetrics -Prelease=${{ github.event.release.tag_name }}
-      - name: Put Artifact Size Metrics in CloudWatch
-        run: ./gradlew putArtifactSizeMetricsInCloudWatch -Prelease=${{ github.event.release.tag_name }}
-  size-check:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Sources
-        uses: actions/checkout@v4
-        with:
-          path: smithy-kotlin
-
-      - name: Setup build
-        uses: ./smithy-kotlin/.github/actions/setup-build
-
-      - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v4
-        with:
-          role-to-assume: ${{ secrets.CI_AWS_ROLE_ARN }}
-          aws-region: us-west-2
-
-      - name: Configure Gradle
-        uses: aws/aws-kotlin-repo-tools/.github/actions/configure-gradle@main
-        with:
-          working-directory: smithy-kotlin
-
-      - name: Generate Artifact Size Metrics
-        run: ./gradlew -Paws.kotlin.native=false artifactSizeMetrics
-        working-directory: smithy-kotlin
-
-      - name: Analyze Artifact Size Metrics
-        run: ./gradlew analyzeArtifactSizeMetrics
-        working-directory: smithy-kotlin
-
-      - name: Show Results
-        uses: aws/aws-kotlin-repo-tools/.github/actions/artifact-size-metrics/show-results@main
-        with:
-          working-directory: smithy-kotlin
-
-      - name: Evaluate
-        if: ${{ !contains(github.event.pull_request.labels.*.name, 'acknowledge-artifact-size-increase') }}
-        working-directory: smithy-kotlin
-        run: |
-          cd build/reports/metrics
-          cat has-significant-change.txt | grep false || {
-            echo An artifact increased in size by more than allowed or a new artifact was created.
-            echo If this is expected please add the 'acknowledge-artifact-size-increase' label to this pull request.
-            exit 1
-          }
diff --git a/.github/workflows/pull-request-metrics.yml b/.github/workflows/pull-request-metrics.yml
new file mode 100644
index 000000000..11c4d6890
--- /dev/null
+++ b/.github/workflows/pull-request-metrics.yml
@@ -0,0 +1,40 @@
+name: Pull request metrics
+on:
+  pull_request:
+
+jobs:
+  artifact-size-metrics:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Configure Gradle
+        uses: awslabs/aws-kotlin-repo-tools/.github/actions/configure-gradle@main
+
+      - name: Build
+        shell: bash
+        run: |
+          ./gradlew build --parallel
+          ./gradlew publishAllPublicationsToTestLocalRepository --parallel
+
+      - name: Calculate metrics
+        uses: awslabs/aws-kotlin-repo-tools/.github/actions/artifact-size-metrics/calculate-and-upload@main
+        with:
+          upload: 'false'
+          release_metrics: 'false'
+
+      - name: Configure credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          role-to-assume: ${{ secrets.CI_AWS_ROLE_ARN }}
+          aws-region: us-west-2
+
+      - name: Process metrics
+        uses: awslabs/aws-kotlin-repo-tools/.github/actions/artifact-size-metrics/download-and-process@main
+        with:
+          download: 'false'
+
+permissions:
+  id-token: write
+  contents: read
diff --git a/.github/workflows/release-metrics.yml b/.github/workflows/release-metrics.yml
new file mode 100644
index 000000000..bf9197f14
--- /dev/null
+++ b/.github/workflows/release-metrics.yml
@@ -0,0 +1,37 @@
+name: Release metrics
+
+on:
+  release:
+    types: [ published ]
+
+jobs:
+  artifact-size-metrics:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Configure Gradle
+        uses: awslabs/aws-kotlin-repo-tools/.github/actions/configure-gradle@main
+
+      - name: Build
+        shell: bash
+        run: |
+          ./gradlew build --parallel
+          ./gradlew publishAllPublicationsToTestLocalRepository --parallel
+
+      - name: Configure credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          role-to-assume: ${{ secrets.CI_AWS_ROLE_ARN }}
+          aws-region: us-west-2
+
+      - name: Calculate and upload metrics
+        uses: awslabs/aws-kotlin-repo-tools/.github/actions/artifact-size-metrics/calculate-and-upload@main
+        with:
+          upload: 'true'
+          release_metrics: 'true'
+
+permissions:
+  id-token: write
+  contents: read
diff --git a/build.gradle.kts b/build.gradle.kts
index 2fcc09c1d..fee4cfaf2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -41,19 +41,12 @@ buildscript {
 plugins {
     `dokka-convention`
     alias(libs.plugins.kotlinx.binary.compatibility.validator)
-    alias(libs.plugins.aws.kotlin.repo.tools.artifactsizemetrics)
     // ensure the correct version of KGP ends up on our buildscript classpath
     // since build-plugins also has <some> version in its dependency closure
     id(libs.plugins.kotlin.multiplatform.get().pluginId) apply false
     id(libs.plugins.kotlin.jvm.get().pluginId) apply false
 }
 
-artifactSizeMetrics {
-    artifactPrefixes = setOf(":runtime")
-    significantChangeThresholdPercentage = 5.0
-    projectRepositoryName = "smithy-kotlin"
-}
-
 val testJavaVersion = typedProp<String>("test.java.version")?.let {
     JavaLanguageVersion.of(it)
 }?.also {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index a5b616c59..d1e32fa17 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -118,4 +118,3 @@ kotlinx-binary-compatibility-validator = { id = "org.jetbrains.kotlinx.binary-co
 kotlinx-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin-version"}
 aws-kotlin-repo-tools-kmp = { id = "aws.sdk.kotlin.gradle.kmp", version.ref = "aws-kotlin-repo-tools-version" }
 aws-kotlin-repo-tools-smithybuild = { id = "aws.sdk.kotlin.gradle.smithybuild", version.ref = "aws-kotlin-repo-tools-version" }
-aws-kotlin-repo-tools-artifactsizemetrics = { id = "aws.sdk.kotlin.gradle.artifactsizemetrics", version.ref = "aws-kotlin-repo-tools-version" }