diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 505591c981..89011bf0f5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,17 +14,26 @@ on:
       - 'stl-preview-head/**'
       - 'stl-preview-base/**'
   workflow_dispatch:
+    inputs:
+      release_pr:
+        description: Run required CI for a Release Please branch
+        required: false
+        default: false
+        type: boolean
   # Exercise the complete supported matrix and the next CPython prerelease
   # even when the repository has not changed.
   schedule:
     - cron: '47 9 * * *'
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     timeout-minutes: 10
     name: lint
     runs-on: ${{ startsWith(github.repository, 'stainless-sdks/') && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
-    if: (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
+    if: (github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && inputs.release_pr && github.ref == 'refs/heads/release-please--branches--main') || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
@@ -41,15 +50,16 @@ jobs:
         run: ./scripts/lint
 
   build:
-    if: (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
+    if: (github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && inputs.release_pr && github.ref == 'refs/heads/release-please--branches--main') || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
     timeout-minutes: 10
     name: build
     permissions:
       contents: read
-      id-token: write
     runs-on: ${{ startsWith(github.repository, 'stainless-sdks/') && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Rye
         uses: eifinger/setup-rye@c694239a43768373e87d0103d7f547027a23f3c8
@@ -88,19 +98,44 @@ jobs:
       - name: Validate HTTPX2 wheel on Python 3.14
         run: python scripts/utils/validate-httpx2-wheel.py
 
-      - name: Get GitHub OIDC Token
+      - name: Stage tarball for Stainless upload
         if: |-
           github.repository == 'stainless-sdks/openai-python' &&
           !startsWith(github.ref, 'refs/heads/stl/')
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: stainless-package-tarball
+          path: dist/
+          if-no-files-found: error
+          retention-days: 1
+
+  stainless-upload:
+    name: upload tarball to Stainless
+    needs: build
+    if: github.repository == 'stainless-sdks/openai-python' && !startsWith(github.ref, 'refs/heads/stl/')
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
+
+      - name: Download tarball
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: stainless-package-tarball
+          path: dist/
+
+      - name: Get GitHub OIDC Token
         id: github-oidc
         uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
         with:
           script: core.setOutput('github_token', await core.getIDToken());
 
       - name: Upload tarball
-        if: |-
-          github.repository == 'stainless-sdks/openai-python' &&
-          !startsWith(github.ref, 'refs/heads/stl/')
         env:
           URL: https://pkg.stainless.com/s
           AUTH: ${{ steps.github-oidc.outputs.github_token }}
@@ -111,7 +146,7 @@ jobs:
     timeout-minutes: 15
     name: test (Python ${{ matrix.python-version }})
     runs-on: ${{ startsWith(github.repository, 'stainless-sdks/') && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
-    if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
+    if: github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && inputs.release_pr && github.ref == 'refs/heads/release-please--branches--main') || github.event.pull_request.head.repo.fork
     strategy:
       fail-fast: false
       matrix:
@@ -147,7 +182,7 @@ jobs:
     timeout-minutes: 20
     name: test (HTTPX2)
     runs-on: ${{ startsWith(github.repository, 'stainless-sdks/') && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
-    if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
+    if: github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && inputs.release_pr && github.ref == 'refs/heads/release-please--branches--main') || github.event.pull_request.head.repo.fork
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
@@ -224,7 +259,7 @@ jobs:
     timeout-minutes: 20
     name: compatibility (Python ${{ matrix.python-version }})
     runs-on: ubuntu-latest
-    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
+    if: github.event_name == 'schedule' || (github.event_name == 'workflow_dispatch' && !inputs.release_pr)
     continue-on-error: ${{ matrix.experimental }}
     strategy:
       fail-fast: false
diff --git a/.github/workflows/create-releases.yml b/.github/workflows/create-releases.yml
index fc38031b96..51264e6dfa 100644
--- a/.github/workflows/create-releases.yml
+++ b/.github/workflows/create-releases.yml
@@ -9,20 +9,98 @@ jobs:
     name: release
     if: github.ref == 'refs/heads/main' && github.repository == 'openai/openai-python'
     runs-on: ubuntu-latest
-    environment: publish
     outputs:
       releases_created: ${{ steps.release.outputs.releases_created }}
+      release_pr_branch: ${{ steps.release_pr.outputs.branch }}
+      release_pr_number: ${{ steps.release_pr.outputs.number }}
+    # Release Please writes its PR branch, tags/releases, PR, and PR labels.
     permissions:
       contents: write
+      issues: write
+      pull-requests: write
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-
-      - uses: stainless-api/trigger-release-please@bb6677c5a04578eec1ccfd9e1913b5b78ed64c61 # v1.4.0
+      - uses: googleapis/release-please-action@45996ed1f6d02564a971a2fa1b5860e934307cf7 # v5.0.0
         id: release
         with:
-          repo: ${{ github.event.repository.full_name }}
-          stainless-api-key: ${{ secrets.STAINLESS_API_KEY }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          target-branch: main
+          config-file: release-please-config.json
+          manifest-file: .release-please-manifest.json
+
+      - name: Capture release PR
+        if: steps.release.outputs.prs_created == 'true'
+        id: release_pr
+        env:
+          RELEASE_PR: ${{ steps.release.outputs.pr }}
+        run: |
+          branch="$(jq -er '.headBranchName | select(. == "release-please--branches--main")' <<<"$RELEASE_PR")"
+          number="$(jq -er '.number | select(type == "number")' <<<"$RELEASE_PR")"
+          echo "branch=$branch" >> "$GITHUB_OUTPUT"
+          echo "number=$number" >> "$GITHUB_OUTPUT"
+
+  release-pr-ci:
+    name: release PR CI
+    needs: release
+    if: ${{ needs.release.outputs.release_pr_branch != '' }}
+    runs-on: ubuntu-latest
+    # Read the release PR's current base SHA, then dispatch its required
+    # workflows. Keeping this separate prevents Release Please from receiving
+    # Actions write access.
+    permissions:
+      actions: write
+      pull-requests: read
+
+    steps:
+      - name: Run required checks for release PR
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
+        env:
+          RELEASE_PR_BRANCH: ${{ needs.release.outputs.release_pr_branch }}
+          RELEASE_PR_NUMBER: ${{ needs.release.outputs.release_pr_number }}
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const expectedRef = process.env.RELEASE_PR_BRANCH;
+            const pullNumber = Number(process.env.RELEASE_PR_NUMBER);
+            if (!Number.isSafeInteger(pullNumber) || pullNumber <= 0) {
+              throw new Error('Release Please returned an invalid PR number');
+            }
+
+            const { data: pull } = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: pullNumber,
+            });
+            if (pull.head.ref !== expectedRef) {
+              throw new Error(`Release PR branch changed: expected ${expectedRef}, got ${pull.head.ref}`);
+            }
+
+            const ref = pull.head.ref;
+            await Promise.all([
+              github.rest.actions.createWorkflowDispatch({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                workflow_id: 'ci.yml',
+                ref,
+                inputs: { release_pr: 'true' },
+              }),
+              github.rest.actions.createWorkflowDispatch({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                workflow_id: 'detect-breaking-changes.yml',
+                ref,
+                inputs: {
+                  release_pr: 'true',
+                  base_sha: pull.base.sha,
+                },
+              }),
+              github.rest.actions.createWorkflowDispatch({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                workflow_id: 'codeql.yml',
+                ref,
+              }),
+            ]);
 
   build:
     name: build
@@ -36,6 +114,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Rye
         uses: eifinger/setup-rye@c694239a43768373e87d0103d7f547027a23f3c8
@@ -64,7 +144,6 @@ jobs:
     # PyPI Trusted Publishing requires id-token: write. Keep it scoped to this
     # minimal upload-only job rather than the build job.
     permissions:
-      contents: read
       id-token: write
 
     steps:
diff --git a/.github/workflows/detect-breaking-changes.yml b/.github/workflows/detect-breaking-changes.yml
index 5f4a5e1271..db660c03cf 100644
--- a/.github/workflows/detect-breaking-changes.yml
+++ b/.github/workflows/detect-breaking-changes.yml
@@ -4,16 +4,36 @@ on:
     branches:
       - main
       - next
+  workflow_dispatch:
+    inputs:
+      release_pr:
+        description: Run checks for a Release Please branch
+        required: false
+        default: false
+        type: boolean
+      base_sha:
+        description: Base commit for breaking-change comparison
+        required: false
+        type: string
+
+permissions:
+  contents: read
 
 jobs:
   detect_breaking_changes:
     runs-on: 'ubuntu-latest'
     name: detect-breaking-changes
-    if: github.repository == 'openai/openai-python'
+    if: github.repository == 'openai/openai-python' && (github.event_name == 'pull_request' || (inputs.release_pr && github.ref == 'refs/heads/release-please--branches--main'))
+    env:
+      BASE_SHA: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha || inputs.base_sha }}
+      FETCH_DEPTH: 0
     steps:
       - name: Calculate fetch-depth
+        if: github.event_name == 'pull_request'
+        env:
+          PR_COMMITS: ${{ github.event.pull_request.commits }}
         run: |
-          echo "FETCH_DEPTH=$(expr ${{ github.event.pull_request.commits }} + 1)" >> $GITHUB_ENV
+          echo "FETCH_DEPTH=$((PR_COMMITS + 1))" >> "$GITHUB_ENV"
 
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
@@ -30,17 +50,17 @@ jobs:
           rye sync --all-features
       - name: Detect removed symbols
         run: |
-          rye run python scripts/detect-breaking-changes.py "${{ github.event.pull_request.base.sha }}"
+          rye run python scripts/detect-breaking-changes.py "$BASE_SHA"
 
       - name: Detect breaking changes
         run: |
           test -f ./scripts/detect-breaking-changes || { echo "Missing scripts/detect-breaking-changes"; exit 1; }
-          ./scripts/detect-breaking-changes ${{ github.event.pull_request.base.sha }}
+          ./scripts/detect-breaking-changes "$BASE_SHA"
 
   agents_sdk:
     runs-on: 'ubuntu-latest'
     name: Detect Agents SDK regressions
-    if: github.repository == 'openai/openai-python'
+    if: github.repository == 'openai/openai-python' && (github.event_name == 'pull_request' || (inputs.release_pr && github.ref == 'refs/heads/release-please--branches--main'))
     steps:
       # Setup this sdk
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
diff --git a/release-please-config.json b/release-please-config.json
index 745ef5fd54..2e4b90d047 100644
--- a/release-please-config.json
+++ b/release-please-config.json
@@ -1,12 +1,10 @@
 {
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
   "packages": {
     ".": {}
   },
-  "$schema": "https://raw.githubusercontent.com/stainless-api/release-please/main/schemas/config.json",
   "include-v-in-tag": true,
   "include-component-in-tag": false,
-  "versioning": "prerelease",
-  "prerelease": true,
   "bump-minor-pre-major": true,
   "bump-patch-for-minor-pre-major": false,
   "pull-request-header": "Automated Release PR",
@@ -63,4 +61,4 @@
   "extra-files": [
     "src/openai/_version.py"
   ]
-}
\ No newline at end of file
+}