When optimizing models for real-time applications versus offline renderings, the core difference lies in priorities: real-time focuses on rendering speed and hardware efficiency, while offline prioritizes visual detail and realism.
Real-time applications (e.g., games, AR/VR) require smooth high frame rates, so they use lower polygon counts, compressed/simplified textures, and lightweight shaders to reduce GPU load. Offline renderings (e.g., films, architectural visualizations) leverage higher polygon counts, detailed 4K+ textures, and complex lighting effects since rendering time is less critical.
Key optimization steps depend on the target: for real-time, prioritize polygon reduction and texture compression; for offline, focus on detail preservation and advanced material setups.