diff --git a/test_inter_chunk_cleanup.py b/test_inter_chunk_cleanup.py
new file mode 100644
index 0000000..b3330e0
--- /dev/null
+++ b/test_inter_chunk_cleanup.py
@@ -0,0 +1,139 @@
+#!/usr/bin/env python3
+"""
+Test script to verify inter-chunk cleanup properly destroys models
+"""
+
+import psutil
+import gc
+import sys
+from pathlib import Path
+
+def get_memory_usage():
+    """Get current memory usage in GB"""
+    process = psutil.Process()
+    return process.memory_info().rss / (1024**3)
+
+def test_inter_chunk_cleanup():
+    """Test that models are properly destroyed between chunks"""
+    
+    print("🧪 TESTING INTER-CHUNK CLEANUP")
+    print("=" * 50)
+    
+    baseline_memory = get_memory_usage()
+    print(f"📊 Baseline memory: {baseline_memory:.2f} GB")
+    
+    # Import and create processor
+    print("\n1️⃣ Creating processor...")
+    from vr180_matting.config import VR180Config
+    from vr180_matting.vr180_processor import VR180Processor
+    
+    config = VR180Config.from_yaml('config.yaml')
+    processor = VR180Processor(config)
+    
+    init_memory = get_memory_usage()
+    print(f"📊 After processor init: {init_memory:.2f} GB (+{init_memory - baseline_memory:.2f} GB)")
+    
+    # Simulate chunk processing (just trigger model loading)
+    print("\n2️⃣ Simulating chunk 0 processing...")
+    
+    # Test 1: Force YOLO model loading
+    try:
+        detector = processor.detector
+        detector._load_model()  # Force load
+        yolo_memory = get_memory_usage()
+        print(f"📊 After YOLO load: {yolo_memory:.2f} GB (+{yolo_memory - init_memory:.2f} GB)")
+    except Exception as e:
+        print(f"❌ YOLO loading failed: {e}")
+        yolo_memory = init_memory
+    
+    # Test 2: Force SAM2 model loading
+    try:
+        sam2_model = processor.sam2_model
+        sam2_model._load_model(sam2_model.model_cfg, sam2_model.checkpoint_path)
+        sam2_memory = get_memory_usage()
+        print(f"📊 After SAM2 load: {sam2_memory:.2f} GB (+{sam2_memory - yolo_memory:.2f} GB)")
+    except Exception as e:
+        print(f"❌ SAM2 loading failed: {e}")
+        sam2_memory = yolo_memory
+    
+    total_model_memory = sam2_memory - init_memory
+    print(f"📊 Total model memory: {total_model_memory:.2f} GB")
+    
+    # Test 3: Inter-chunk cleanup
+    print("\n3️⃣ Testing inter-chunk cleanup...")
+    processor._complete_inter_chunk_cleanup(chunk_idx=0)
+    
+    cleanup_memory = get_memory_usage()
+    cleanup_improvement = sam2_memory - cleanup_memory
+    print(f"📊 After cleanup: {cleanup_memory:.2f} GB (-{cleanup_improvement:.2f} GB freed)")
+    
+    # Test 4: Verify models reload fresh
+    print("\n4️⃣ Testing fresh model reload...")
+    
+    # Check YOLO state
+    yolo_reloaded = processor.detector.model is None
+    print(f"🔍 YOLO model destroyed: {'✅ YES' if yolo_reloaded else '❌ NO'}")
+    
+    # Check SAM2 state  
+    sam2_reloaded = not processor.sam2_model._model_loaded or processor.sam2_model.predictor is None
+    print(f"🔍 SAM2 model destroyed: {'✅ YES' if sam2_reloaded else '❌ NO'}")
+    
+    # Test 5: Force reload to verify they work
+    print("\n5️⃣ Testing model reload...")
+    try:
+        # Force YOLO reload
+        processor.detector._load_model()
+        yolo_reload_memory = get_memory_usage()
+        
+        # Force SAM2 reload
+        processor.sam2_model._load_model(processor.sam2_model.model_cfg, processor.sam2_model.checkpoint_path)
+        sam2_reload_memory = get_memory_usage()
+        
+        reload_growth = sam2_reload_memory - cleanup_memory
+        print(f"📊 After reload: {sam2_reload_memory:.2f} GB (+{reload_growth:.2f} GB)")
+        
+        if abs(reload_growth - total_model_memory) < 1.0:  # Within 1GB
+            print("✅ Models reloaded with similar memory usage (good)")
+        else:
+            print("⚠️  Model reload memory differs significantly")
+            
+    except Exception as e:
+        print(f"❌ Model reload failed: {e}")
+    
+    # Final summary
+    print(f"\n📊 SUMMARY:")
+    print(f"   Baseline → Peak: {baseline_memory:.2f}GB → {sam2_memory:.2f}GB")
+    print(f"   Peak → Cleanup: {sam2_memory:.2f}GB → {cleanup_memory:.2f}GB")
+    print(f"   Memory freed: {cleanup_improvement:.2f}GB")
+    print(f"   Models destroyed: YOLO={yolo_reloaded}, SAM2={sam2_reloaded}")
+    
+    if cleanup_improvement > total_model_memory * 0.5:  # Freed >50% of model memory
+        print("✅ Inter-chunk cleanup working effectively")
+        return True
+    else:
+        print("❌ Inter-chunk cleanup not freeing enough memory")
+        return False
+
+def main():
+    if len(sys.argv) != 2:
+        print("Usage: python test_inter_chunk_cleanup.py <config.yaml>")
+        sys.exit(1)
+    
+    config_path = sys.argv[1]
+    if not Path(config_path).exists():
+        print(f"Config file not found: {config_path}")
+        sys.exit(1)
+    
+    success = test_inter_chunk_cleanup()
+    
+    if success:
+        print(f"\n🎉 SUCCESS: Inter-chunk cleanup is working!")
+        print(f"💡 This should prevent 15-20GB model accumulation between chunks")
+    else:
+        print(f"\n❌ FAILURE: Inter-chunk cleanup needs improvement")
+        print(f"💡 Check model destruction logic in _complete_inter_chunk_cleanup")
+    
+    return 0 if success else 1
+
+if __name__ == "__main__":
+    sys.exit(main())
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