GPT Image 1.5 vs. Seedream 5.0 Pro

Create a square cinematic full-body portrait of a fictional bicycle courier waiting under a transparent umbrella at a rainy tram stop in Hamburg at blue hour. She wears a mustard raincoat, navy trousers, red sneakers, a silver helmet, and carries a teal messenger bag. Keep both hands visible, render the bicycle correctly, use realistic wet-street reflections, and include no readable brand names.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 12:17 PM. Source
Seedream 5.0 Pro. Provider OpenRouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.045000, model ID bytedance-seed/seedream-5-0-pro, generated Aug 14, 2026, 1:32 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Create a square German infographic titled SO FUNKTIONIERT PHOTOSYNTHESE. Show exactly four numbered steps in this order: 1 LICHT, 2 WASSER, 3 CO₂, 4 ZUCKER + SAUERSTOFF. Use a clean editorial science style with one plant cross-section, simple arrows, high contrast, legible labels, and no other text.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 12:17 PM. Source
Seedream 5.0 Pro. Provider OpenRouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.045000, model ID bytedance-seed/seedream-5-0-pro, generated Aug 14, 2026, 1:34 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Create a square premium product photograph of a brushed titanium wristwatch standing upright on dark green marble. The watch has a cream dial, thin black hands set to 10:10, twelve distinct hour markers, a realistic crown, and a dark brown leather strap. Soft window light from the left, controlled reflections, shallow depth of field, no text, no logo, no extra objects.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 12:16 PM. Source
Seedream 5.0 Pro. Provider OpenRouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.045000, model ID bytedance-seed/seedream-5-0-pro, generated Aug 14, 2026, 1:29 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.

Create a square editorial poster for an imaginary night train called MONDFALTER. Show the exact German headline MONDFALTER and the exact subline BERLIN NACH LISSABON. Use a restrained midnight-blue and warm-cream palette, one stylized moth, strong Swiss-grid typography, generous negative space, and no additional words or logos.

GPT Image 1.5. Provider Together, 1024x1024, n=1, seed=provider random, provider default steps, model ID openai/gpt-image-1.5, generated Aug 14, 2026, 1:59 PM. Source
Seedream 5.0 Pro. Provider OpenRouter, aspect ratio 1:1, resolution 1K, n=1, seed=provider random, actual cost $0.045000, model ID bytedance-seed/seedream-5-0-pro, generated Aug 14, 2026, 2:05 PM. Source

Protocol gradually-image-comparison-v1, selection rule: first result.