DART (Detect Anything in Real Time) is a training-free framework that converts SAM3 into a real-time multi-class open-vocabulary detector. In practice, the codebase is an inference-optimization and deployment framework: it exports SAM3 backbone components to ONNX/TensorRT, applies FP16/INT8 quantization, builds optimized TRT engines, and runs pipelined video inference with CUDA graphs and torch.compile. It also includes an LLM-driven interactive agent (Qwen via OpenAI-compatible API) that performs iterative segmentation through tool calls (segment_phrase, examine_each_mask, select_masks_and_return), plus video dataset handling, grounding/mask export utilities, and COCO-style evaluation scripts. The repository is a hybrid: fundamentally an application/framework for real-time detection, it carries strong research-code characteristics — calibration caches (calib/*.json), ad-hoc experiment scripts with hardcoded checkpoints (sam3.pt, backbone.onnx), and iterative debugging comments ('Previous test showed...'). The architecture centers on ONNX export of SAM3 blocks (EfficientViT backbone, text encoder, prompt encoder, mask predictor, pixel decoder), TRT engine building, and a quantization layer (dartf/quant/) with experimental plugins tightly coupled to specific ONNX graph patterns. A media production pipeline (dartf/media/) builds explainer videos with automated slide rendering and music mixing. The codebase shows signs of being an experimental workspace rather than a maintained library: hardcoded paths in evaluation configs, version-sensitive TensorRT API usage, a fragile ONNX export pipeline depending on onnxsim subprocess calls, and potential drift between ONNX-exported blocks and real backbone behavior. The 'training-free' claim is partially contradicted by the presence of distillation training code, and the package name dart-detect vs module sam3 mismatch may cause import confusion. Despite these issues, several well-isolated components — an abstract prediction-file evaluator, a TensorRT layer analysis script, and an LLM agent client — could be extracted for reuse in other vision or agent projects.