diff --git a/.github/workflows/build-default-models.yaml b/.github/workflows/build-default-models.yaml
index c6abc4c134..496a2b34f5 100644
--- a/.github/workflows/build-default-models.yaml
+++ b/.github/workflows/build-default-models.yaml
@@ -47,6 +47,7 @@ jobs:
           if [ "${{ inputs.target }}" = "big" ]; then
             NAME=$(python3 -c "from openpilot.sunnypilot.models.model_name import DEFAULT_BIG_MODEL; print(DEFAULT_BIG_MODEL)")
             HF_DEFAULTS_PATH="models/defaults/big"
+            ONNX_PATH="openpilot/selfdrive/modeld/models/big_driving_tinygrad.pkl"
           elif [ "${{ inputs.target }}" = "dm" ]; then
             ONNX_PATH="openpilot/selfdrive/modeld/models/dmonitoring_model.onnx"
             HF_DEFAULTS_PATH="models/defaults/dm"
@@ -206,6 +207,34 @@ jobs:
               raise RuntimeError('Chestnut PCIe link not ready after 10 attempts')
           "
 
+      - name: Compile big warp
+        run: |
+          source ${UV_PROJECT_ENVIRONMENT}/bin/activate
+          export PYTHONPATH="${PYTHONPATH}:${{ github.workspace }}/tinygrad_repo:${{ github.workspace }}"
+
+          CHESTNUT_TG_FLAGS="DEBUG=1 DEV=USB+AMD:LLVM FRAME_DEV=CPU FLOAT16=1 JIT_BATCH_SIZE=0 GMMU=0 TC_OPT=2 TC_MIN_GLOBALS=32"
+          COMPILER="${{ github.workspace }}/tinygrad_repo/examples/openpilot"
+          MODELS_DIR="${{ github.workspace }}/openpilot/selfdrive/modeld/models"
+          MODEL_SIZE=$(python3 -c "from openpilot.common.transformations.model import MEDMODEL_INPUT_SIZE as s; print(f'{s[0]}x{s[1]}')")
+
+          for res in $(python3 -c "from openpilot.common.transformations.camera import _ar_ox_fisheye as a, _os_fisheye as o; print(f'{a.width}x{a.height} {o.width}x{o.height}')"); do
+            CAM_W=$(echo $res | cut -d x -f1)
+            CAM_H=$(echo $res | cut -d x -f2)
+            STRIDE_INFO=$(python3 -c "
+          import sys
+          from openpilot.system.camerad.cameras.nv12_info import get_nv12_info
+          s,y,u,sz = get_nv12_info(int(sys.argv[1]), int(sys.argv[2]))
+          print(f'{s},{y},{u},{sz}')
+          " $CAM_W $CAM_H)
+            WARP_PKL="${MODELS_DIR}/big_driving_warp_${res}_tinygrad.pkl"
+            env ${CHESTNUT_TG_FLAGS} python3 "${COMPILER}/compile_warp.py" \
+              --frame ${CAM_W},${CAM_H},${STRIDE_INFO} \
+              --warp-to ${MODEL_SIZE} \
+              --layout yuv420 \
+              --frames 2 \
+              --output "${WARP_PKL}"
+          done
+
       - name: Prepare output
         env:
           MODEL_NAME: ${{ needs.resolve.outputs.safe_model_name }}
@@ -219,7 +248,7 @@ jobs:
 
           cp "$MODELS_DIR/${PKL_BASE}" "$OUTPUT_DIR/"
 
-          PKL_LFS_SHA256=$(sha256sum "$MODELS_DIR/${PKL_BASE}" | cut -d' ' -f1)
+          PKL_LFS_SHA256=$(git cat-file blob "$(git ls-files -s "${{ github.workspace }}/${{ env.BIG_PKL }}" | awk '{print $2}')" | grep '^oid sha256:' | cut -d: -f2)
 
           python3 "${{ github.workspace }}/release/ci/model_generator.py" \
             --model-dir "$MODELS_DIR" \
@@ -228,6 +257,8 @@ jobs:
             --upstream-branch "${{ needs.resolve.outputs.onnx_ref }}" \
             --onnx-sha256 "$PKL_LFS_SHA256"
 
+          cp "$MODELS_DIR"/big_driving_warp_* "$OUTPUT_DIR/" || true
+
           echo "model-${MODEL_NAME}-${{ github.run_number }}" > "$OUTPUT_DIR/artifact_name.txt"
 
       - name: Upload big model artifact
@@ -305,6 +336,8 @@ jobs:
             --hf-defaults-path "${{ needs.resolve.outputs.hf_defaults_path }}" \
             --artifact-name "$ARTIFACT_NAME" \
             --model-dir output \
+            --onnx-path "${{ needs.resolve.outputs.onnx_path }}" \
+            --onnx-ref "${{ needs.resolve.outputs.onnx_ref }}" \
             --model-name "${{ needs.resolve.outputs.model_name }}" \
             --tinygrad-ref "${{ needs.resolve.outputs.tinygrad_ref }}" \
             --run-number "${{ github.run_number }}"
@@ -458,4 +491,3 @@ jobs:
         run: |
           source ${UV_PROJECT_ENVIRONMENT}/bin/activate
           PYTHONPATH=$PYTHONPATH:${{ github.workspace }}/ ${{ github.workspace }}/scripts/manage-powersave.py --enable
-
diff --git a/.github/workflows/download-hf-model/action.yml b/.github/workflows/download-hf-model/action.yml
index d8372c3c10..863d81c89f 100644
--- a/.github/workflows/download-hf-model/action.yml
+++ b/.github/workflows/download-hf-model/action.yml
@@ -63,6 +63,11 @@ runs:
               ENCODED_URL=$(python3 -c "import urllib.parse; print(urllib.parse.quote('${BASE_URL}/${warp}', safe=':/'))")
               printf '%s\t%s\n' "$ENCODED_URL" "${DEST_DIR}/${warp}" >> "$DOWNLOAD_LIST"
             done
+          elif [ "$CANONICAL" = "big_driving_tinygrad.pkl" ]; then
+            for warp in big_driving_warp_1928x1208_tinygrad.pkl big_driving_warp_1344x760_tinygrad.pkl; do
+              ENCODED_URL=$(python3 -c "import urllib.parse; print(urllib.parse.quote('${BASE_URL}/${warp}', safe=':/'))")
+              printf '%s\t%s\n' "$ENCODED_URL" "${DEST_DIR}/${warp}" >> "$DOWNLOAD_LIST"
+            done
           fi
         }
 
diff --git a/openpilot/sunnypilot/modeld_v2/compile_warp.py b/openpilot/sunnypilot/modeld_v2/compile_warp.py
old mode 100644
new mode 100755