피파 한 줄 정리: Fast/draft tier (탐색용) vs premium tier (production hero). 80/20 budget split — 탐색에 80%, hero에 20% — 가 가장 효율.
Imagine you're a film director. During pre-production, you sketch quick storyboard thumbnails on napkins — speed matters, perfection doesn't. On shooting day, you set up lights, choose lenses, and spend hours getting one perfect shot. The napkin sketches and the final frame serve completely different purposes. Treating them the same wastes either time or quality.
Generative AI models work the same way. Fast/draft models are your napkin sketches. Premium models are your hero shots. Using premium quality for every exploratory idea is like renting a RED camera to plan your grocery list.
Fast/Draft Tier
Midjourney Draft Mode runs at roughly 10x speed and half the cost of standard generation. It's explicitly designed for rapid ideation: you sacrifice some detail and coherence in exchange for seeing many more possibilities quickly.
FLUX.1 Schnell generates in 4 steps — photorealistic results in under a second on good hardware. It's the fastest open model suitable for real-time exploration.
Imagen 4 Fast at $0.02 per image is Google's budget tier — designed for high-volume, rapid iteration.
Hailuo 2.3 Fast cuts video generation costs by 50% for batch creation and exploration.
Premium/Hero Tier
Midjourney v7 Standard/HD delivers maximum aesthetic quality with rich textures and compositional intelligence.
GPT-Image 1.5 High Quality at $0.133/image provides the best text rendering and prompt adherence.
Imagen 4 Ultra is Google's maximum-detail tier for strict prompt adherence and fine detail.
Runway Gen-4.5 and Veo 3.1 are the premium video tiers with maximum quality, resolution, and duration.
The Two-Phase Workflow
Phase 1: IDEATION (Fast Models) Phase 2: PRODUCTION (Premium Models) ┌────────────────────────────────┐ ┌────────────────────────────────┐ │ Generate 20-50 variations │ │ Take 2-3 best concepts │ │ Use draft/fast modes │───select───▶ │ Regenerate at full quality │ │ Explore styles, compositions │ │ Refine with editing tools │ │ Cost: $0.02-0.05 each │ │ Cost: $0.10-0.50 each │ │ Time: seconds │ │ Time: 10-60 seconds │ └────────────────────────────────┘ └────────────────────────────────┘
Generate 5 images at maximum quality ($0.65 total), pick the best one, done.
Generate 30 drafts at fast quality ($0.60), pick 3 winners, regenerate those at max quality ($0.40). Total: $1.00 for 6x more exploration and 3 hero candidates.
- Fast models are for exploring possibility space. Premium models are for producing final outputs.
- The 80/20 budget split — cheap exploration, expensive production — maximizes both creativity and quality.
- Draft modes aren't "worse versions" — they're different tools for a different job.