diff --git a/.github/actions/cache-go-build/action.yml b/.github/actions/cache-go-build/action.yml
new file mode 100644
index 00000000000..f29b144c934
--- /dev/null
+++ b/.github/actions/cache-go-build/action.yml
@@ -0,0 +1,39 @@
+name: "Cache the Go build"
+description: >-
+  Restore the Go module and build caches on every run and save them only from
+  main, so pull requests reuse main's cache instead of evicting it with their
+  own copies.
+
+  actions/setup-go's built-in cache saves from every ref, and a cache saved by a
+  pull request is readable only by that pull request. Callers must pass
+  `cache: false` to setup-go and run this action after it.
+
+inputs:
+  dependency-path:
+    description: "Path to the go.sum that keys the cache"
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Restore and save the Go module and build caches
+      if: github.ref == 'refs/heads/main'
+      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      with:
+        path: |
+          ~/go/pkg/mod
+          ~/.cache/go-build
+        key: ${{ runner.os }}-go-${{ hashFiles(inputs.dependency-path) }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+
+    - name: Restore the Go module and build caches
+      if: github.ref != 'refs/heads/main'
+      uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      with:
+        path: |
+          ~/go/pkg/mod
+          ~/.cache/go-build
+        key: ${{ runner.os }}-go-${{ hashFiles(inputs.dependency-path) }}
+        restore-keys: |
+          ${{ runner.os }}-go-
diff --git a/.github/actions/restore-rust-bridge/action.yml b/.github/actions/restore-rust-bridge/action.yml
new file mode 100644
index 00000000000..d050431dbc6
--- /dev/null
+++ b/.github/actions/restore-rust-bridge/action.yml
@@ -0,0 +1,37 @@
+name: "Restore the Rust bridge"
+description: >-
+  Restore the prebuilt Rust bridge that the unit workflow's rust-bridge job saves
+  on main, keyed on every input of the Rust build.
+
+  The bridge is abi3, so one build serves every supported Python version. A job
+  whose Rust inputs match main installs the restored wheel and native library
+  instead of compiling them inside `uv sync`. On a miss the caller builds from
+  source as before.
+
+  The restored `rust-bridge-dist` directory holds the editable litellm wheel, the
+  litellm-proxy gateway wheel, and `litellm/rust_bridge/_native.abi3.so`.
+
+outputs:
+  key:
+    description: "Cache key for the bridge built from this checkout"
+    value: ${{ steps.key.outputs.key }}
+  cache-hit:
+    description: "'true' when the bridge for this exact key was restored"
+    value: ${{ steps.restore.outputs.cache-hit }}
+
+runs:
+  using: composite
+  steps:
+    - name: Define the Rust bridge cache key
+      id: key
+      shell: bash
+      env:
+        RUST_BRIDGE_CACHE_KEY: ${{ runner.os }}-rust-bridge-editable-${{ hashFiles('litellm/rust/Cargo.lock', 'litellm/rust/Cargo.toml', 'litellm/rust/crates/**', 'model_prices_and_context_window.json', 'pyproject.toml', 'litellm/packaging/litellm-proxy/pyproject.toml') }}
+      run: echo "key=$RUST_BRIDGE_CACHE_KEY" >> "$GITHUB_OUTPUT"
+
+    - name: Restore the Rust bridge
+      id: restore
+      uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      with:
+        path: rust-bridge-dist
+        key: ${{ steps.key.outputs.key }}
diff --git a/.github/workflows/test-linting.yml b/.github/workflows/test-linting.yml
index f401d022858..2358cbfc028 100644
--- a/.github/workflows/test-linting.yml
+++ b/.github/workflows/test-linting.yml
@@ -73,14 +73,14 @@ jobs:
 
       - name: Cache uv dependencies
         if: steps.changes.outputs.decision != 'skip'
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: |
             ~/.cache/uv
             .venv
-          key: ${{ runner.os }}-uv-lint-${{ hashFiles('uv.lock') }}
+          key: ${{ runner.os }}-uv-${{ hashFiles('uv.lock') }}
           restore-keys: |
-            ${{ runner.os }}-uv-lint-
+            ${{ runner.os }}-uv-
 
       - name: Clean Python cache
         if: steps.changes.outputs.decision != 'skip'
@@ -396,7 +396,7 @@ jobs:
 
       - name: Cache uv dependencies
         if: steps.changes.outputs.relevant == 'true'
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: |
             ~/.cache/uv
diff --git a/.github/workflows/test-merge-smoke.yml b/.github/workflows/test-merge-smoke.yml
index 362d56c314e..8ed1876a081 100644
--- a/.github/workflows/test-merge-smoke.yml
+++ b/.github/workflows/test-merge-smoke.yml
@@ -3,6 +3,8 @@ name: smoke
 on:
   pull_request:
     branches: [main, litellm_internal_staging, litellm_oss_staging, "litellm_**"]
+  push:
+    branches: [main]
   workflow_dispatch:
 
 permissions:
@@ -52,8 +54,26 @@ jobs:
         with:
           version: "0.10.9"
 
+      - name: Restore the Rust bridge
+        id: rust-bridge
+        uses: ./.github/actions/restore-rust-bridge
+
+      - name: Restore the Cargo build cache
+        if: steps.rust-bridge.outputs.cache-hit != 'true'
+        uses: ./.github/actions/cache-cargo-build
+
       - name: Install dependencies
-        run: .github/scripts/uv_sync_with_retries.sh --frozen --extra proxy --extra cli --group dev --group proxy-dev --python ${{ matrix.python-version }}
+        env:
+          RUST_BRIDGE_RESTORED: ${{ steps.rust-bridge.outputs.cache-hit }}
+          PYTHON_VERSION: ${{ matrix.python-version }}
+        run: |
+          if [ "$RUST_BRIDGE_RESTORED" != "true" ]; then
+            .github/scripts/uv_sync_with_retries.sh --frozen --extra proxy --extra cli --group dev --group proxy-dev --python "$PYTHON_VERSION"
+            exit 0
+          fi
+          .github/scripts/uv_sync_with_retries.sh --frozen --extra proxy --extra cli --group dev --group proxy-dev --python "$PYTHON_VERSION" --no-install-project
+          uv pip install --no-deps --python .venv/bin/python rust-bridge-dist/litellm-*.whl
+          cp rust-bridge-dist/litellm/rust_bridge/_native.abi3.so litellm/rust_bridge/_native.abi3.so
 
       - name: Create the loopback-only network namespace
         run: |
@@ -87,6 +107,7 @@ jobs:
 
       - name: Upload smoke diagnostics
         if: always()
+        continue-on-error: true
         uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4.6.1
         with:
           name: merge-smoke-diagnostics-py${{ matrix.python-version }}
@@ -97,6 +118,10 @@ jobs:
         if: always()
         run: sudo ip netns delete smoke
 
+      - name: Keep only source-built wheels in the uv cache
+        if: always() && github.ref == 'refs/heads/main'
+        run: uv cache prune --ci
+
   all-extras:
     name: all-extras-py${{ matrix.python-version }}
     runs-on: ubuntu-24.04
@@ -123,12 +148,34 @@ jobs:
         with:
           version: "0.10.9"
 
+      - name: Restore the Rust bridge
+        id: rust-bridge
+        uses: ./.github/actions/restore-rust-bridge
+
+      - name: Restore the Cargo build cache
+        if: steps.rust-bridge.outputs.cache-hit != 'true'
+        uses: ./.github/actions/cache-cargo-build
+
       - name: Install every extra and dependency group
-        run: .github/scripts/uv_sync_with_retries.sh --frozen --all-groups --all-extras --python ${{ matrix.python-version }}
+        env:
+          RUST_BRIDGE_RESTORED: ${{ steps.rust-bridge.outputs.cache-hit }}
+          PYTHON_VERSION: ${{ matrix.python-version }}
+        run: |
+          if [ "$RUST_BRIDGE_RESTORED" != "true" ]; then
+            .github/scripts/uv_sync_with_retries.sh --frozen --all-groups --all-extras --python "$PYTHON_VERSION"
+            exit 0
+          fi
+          .github/scripts/uv_sync_with_retries.sh --frozen --all-groups --all-extras --python "$PYTHON_VERSION" --no-install-project --no-install-package litellm-proxy
+          uv pip install --no-deps --python .venv/bin/python rust-bridge-dist/*.whl
+          cp rust-bridge-dist/litellm/rust_bridge/_native.abi3.so litellm/rust_bridge/_native.abi3.so
 
       - name: Import the SDK, the proxy server and the enterprise package
         run: .venv/bin/python -c "import litellm, litellm.proxy.proxy_server, litellm_enterprise"
 
+      - name: Keep only source-built wheels in the uv cache
+        if: always() && github.ref == 'refs/heads/main'
+        run: uv cache prune --ci
+
   windows-sdk:
     name: windows-sdk
     runs-on: windows-2025
@@ -154,15 +201,16 @@ jobs:
         with:
           version: "0.10.9"
 
-      - name: Set up the Rust bridge
-        uses: ./.github/actions/rust-bridge
-
       - name: Install dependencies
         run: .github/scripts/uv_sync_with_retries.sh --frozen --group dev --python 3.11
 
       - name: Run the Windows tests
         run: uv run --no-sync python -m pytest --tb=short -v tests/windows_tests
 
+      - name: Keep only source-built wheels in the uv cache
+        if: always() && github.ref == 'refs/heads/main'
+        run: uv cache prune --ci
+
   proxy-build-from-pip:
     name: proxy-build-from-pip
     runs-on: ubuntu-24.04
@@ -298,6 +346,10 @@ jobs:
         if: always()
         run: cat /tmp/litellm-pip.log || true
 
+      - name: Keep only source-built wheels in the uv cache
+        if: always() && github.ref == 'refs/heads/main'
+        run: uv cache prune --ci
+
   smoke-passed:
     name: smoke passed
     needs: [dashboard-build, core-checks, all-extras, windows-sdk, proxy-build-from-pip]
diff --git a/.github/workflows/test-rust-db.yml b/.github/workflows/test-rust-db.yml
index 6d4eba7b25e..116d6785287 100644
--- a/.github/workflows/test-rust-db.yml
+++ b/.github/workflows/test-rust-db.yml
@@ -42,10 +42,6 @@ concurrency:
 
 env:
   CARGO_TERM_COLOR: always
-  RUSTC_WRAPPER: sccache
-  SCCACHE_GHA_ENABLED: "true"
-  SCCACHE_GHA_VERSION: litellm-ci-v1
-  SCCACHE_GHA_RW_MODE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' && 'READ_WRITE' || 'READ_ONLY' }}
   CARGO_INCREMENTAL: "0"
 
 jobs:
@@ -91,11 +87,7 @@ jobs:
         with:
           workspaces: litellm/rust
           cache-on-failure: true
-
-      - name: Set up sccache
-        uses: mozilla-actions/sccache-action@d651010b8da762cde178750d8eda7b5febfe147a
-        with:
-          version: "v0.18.0"
+          save-if: ${{ github.ref == 'refs/heads/main' }}
 
       - name: Install Python dependencies
         working-directory: .
diff --git a/.github/workflows/test-rust.yml b/.github/workflows/test-rust.yml
index 74a6957aba4..880e8ea785c 100644
--- a/.github/workflows/test-rust.yml
+++ b/.github/workflows/test-rust.yml
@@ -78,10 +78,6 @@ concurrency:
 
 env:
   CARGO_TERM_COLOR: always
-  RUSTC_WRAPPER: sccache
-  SCCACHE_GHA_ENABLED: "true"
-  SCCACHE_GHA_VERSION: litellm-ci-v1
-  SCCACHE_GHA_RW_MODE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' && 'READ_WRITE' || 'READ_ONLY' }}
   CARGO_INCREMENTAL: "0"
 
 jobs:
@@ -108,11 +104,6 @@ jobs:
           cache-on-failure: true
           save-if: ${{ github.ref == 'refs/heads/main' }}
 
-      - name: Set up sccache
-        uses: mozilla-actions/sccache-action@d651010b8da762cde178750d8eda7b5febfe147a
-        with:
-          version: "v0.18.0"
-
       - run: cargo clippy --workspace --all-targets --locked -- -D warnings
 
   rust-test:
@@ -155,11 +146,6 @@ jobs:
           cache-on-failure: true
           save-if: ${{ github.ref == 'refs/heads/main' }}
 
-      - name: Set up sccache
-        uses: mozilla-actions/sccache-action@d651010b8da762cde178750d8eda7b5febfe147a
-        with:
-          version: "v0.18.0"
-
       - name: Check generated trace contracts
         working-directory: .
         run: uv run litellm/scripts/generate_trace_types.py --check
@@ -206,11 +192,6 @@ jobs:
           cache-on-failure: true
           save-if: ${{ github.ref == 'refs/heads/main' }}
 
-      - name: Set up sccache
-        uses: mozilla-actions/sccache-action@d651010b8da762cde178750d8eda7b5febfe147a
-        with:
-          version: "v0.18.0"
-
       - run: uv build --wheel --out-dir dist
 
       - run: python .github/scripts/verify_linux_native_wheel.py dist/*.whl
diff --git a/.github/workflows/test-terraform-provider.yml b/.github/workflows/test-terraform-provider.yml
index 7dc61f52364..34958526c59 100644
--- a/.github/workflows/test-terraform-provider.yml
+++ b/.github/workflows/test-terraform-provider.yml
@@ -4,6 +4,7 @@ on:
   push:
     paths:
       - "litellm/deploy/terraform/provider/**"
+      - ".github/actions/cache-go-build/**"
       - ".github/workflows/test-terraform-provider.yml"
   pull_request:
     branches:
@@ -13,6 +14,7 @@ on:
       - "litellm/deploy/terraform/provider/**"
       - "litellm/proxy/**"
       - "litellm/enterprise/**"
+      - ".github/actions/cache-go-build/**"
       - ".github/workflows/test-terraform-provider.yml"
 
 permissions:
@@ -38,8 +40,12 @@ jobs:
       - uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
         with:
           go-version-file: litellm/deploy/terraform/provider/go.mod
-          cache: true
-          cache-dependency-path: litellm/deploy/terraform/provider/go.sum
+          cache: false
+
+      - name: Cache the Go build
+        uses: ./.github/actions/cache-go-build
+        with:
+          dependency-path: litellm/deploy/terraform/provider/go.sum
 
       - name: gofmt
         run: |
@@ -120,8 +126,12 @@ jobs:
       - uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
         with:
           go-version-file: litellm/deploy/terraform/provider/go.mod
-          cache: true
-          cache-dependency-path: litellm/deploy/terraform/provider/go.sum
+          cache: false
+
+      - name: Cache the Go build
+        uses: ./.github/actions/cache-go-build
+        with:
+          dependency-path: litellm/deploy/terraform/provider/go.sum
 
       - name: Audit provider endpoints against the schema
         working-directory: litellm/deploy/terraform/provider
diff --git a/.github/workflows/test-unit.yml b/.github/workflows/test-unit.yml
index 4c048ace26a..f27b58149ab 100644
--- a/.github/workflows/test-unit.yml
+++ b/.github/workflows/test-unit.yml
@@ -41,13 +41,6 @@ jobs:
         timeout-minutes: 2
         uses: ./.github/actions/detect-changes
 
-      - name: Define editable Rust bridge cache key
-        id: rust-bridge-key
-        if: steps.changes.outputs.decision != 'skip'
-        env:
-          RUST_BRIDGE_CACHE_KEY: ${{ runner.os }}-rust-bridge-editable-${{ hashFiles('litellm/rust/Cargo.lock', 'litellm/rust/Cargo.toml', 'litellm/rust/crates/**', 'model_prices_and_context_window.json', 'pyproject.toml', 'litellm/packaging/litellm-proxy/pyproject.toml') }}
-        run: echo "key=$RUST_BRIDGE_CACHE_KEY" >> "$GITHUB_OUTPUT"
-
       - name: Set up Python
         if: steps.changes.outputs.decision != 'skip'
         timeout-minutes: 3
@@ -66,30 +59,17 @@ jobs:
         id: rust-bridge-cache
         if: steps.changes.outputs.decision != 'skip'
         timeout-minutes: 5
-        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830
-        with:
-          path: rust-bridge-dist
-          key: ${{ steps.rust-bridge-key.outputs.key }}
+        uses: ./.github/actions/restore-rust-bridge
 
       - name: Cache the Rust build
         if: steps.changes.outputs.decision != 'skip' && steps.rust-bridge-cache.outputs.cache-hit != 'true'
         timeout-minutes: 5
         uses: ./.github/actions/cache-cargo-build
 
-      - name: Set up sccache
-        if: steps.changes.outputs.decision != 'skip' && steps.rust-bridge-cache.outputs.cache-hit != 'true'
-        uses: mozilla-actions/sccache-action@d651010b8da762cde178750d8eda7b5febfe147a
-        with:
-          version: "v0.18.0"
-
       - name: Build editable Rust bridge
         if: steps.changes.outputs.decision != 'skip' && steps.rust-bridge-cache.outputs.cache-hit != 'true'
         timeout-minutes: 15
         env:
-          RUSTC_WRAPPER: sccache
-          SCCACHE_GHA_ENABLED: "true"
-          SCCACHE_GHA_VERSION: litellm-ci-v1
-          SCCACHE_GHA_RW_MODE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' && 'READ_WRITE' || 'READ_ONLY' }}
           CARGO_INCREMENTAL: "0"
         run: |
           mkdir -p rust-bridge-dist
@@ -103,10 +83,6 @@ jobs:
         timeout-minutes: 15
         working-directory: litellm/packaging/litellm-proxy
         env:
-          RUSTC_WRAPPER: sccache
-          SCCACHE_GHA_ENABLED: "true"
-          SCCACHE_GHA_VERSION: litellm-ci-v1
-          SCCACHE_GHA_RW_MODE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' && 'READ_WRITE' || 'READ_ONLY' }}
           CARGO_INCREMENTAL: "0"
         run: uv run --no-project --with maturin==1.15.0 maturin build --profile dev --strip --out ../../../rust-bridge-dist
 
@@ -125,7 +101,7 @@ jobs:
         uses: actions/cache/save@0057852bfaa89a56745cba8c7296529d2fc39830
         with:
           path: rust-bridge-dist
-          key: ${{ steps.rust-bridge-key.outputs.key }}
+          key: ${{ steps.rust-bridge-cache.outputs.key }}
 
       - name: Expose the Rust bridge artifact
         id: rust-bridge-artifact