Grok vs Flux: Cartoon Field Test
Same illustration brief through Grok Imagine 1.5 and Flux 2 Max. Each engine breaks the spec in a different direction. Notes on where each holds and where each fails.
Media
Field tests surface useful comparisons, not provider dumps. Each entry picks a specific brief, shows the renders side by side, and writes down what each engine got right and where it broke.
Lessons
Anchor the register, not the look
Engines respect 'line-art register' more reliably than 'manga style'. Naming the technical register beats naming the aesthetic.
Photoreal models will resist illustration
Flux 2 Max kept the composition but defaulted to photoreal rendering even with explicit illustration anchors. Don't fight it; use it where the photoreal pull helps.
Accent glow needs explicit color names
Neon magenta survives across engines when named by hex or HSL. 'Accent glow' alone gets washed into ambient warmth by softer engines.
Model Field Test
ImageTested
Prompt
Stylized monochrome character, neon magenta accent glow, manga line-art register.
Findings
- → Grok holds the line-art register cleanest
- → Flux 2 Max pushes photoreal even with illustration anchor
- → Qwen and GPT split between manga and Western cartoon
Failure Modes
- × Flux 2 Max loses the line-art register entirely
- × GPT softens accent glow into ambient color
Best For
- ✓ Grok: line-art and manga briefs
- ✓ Flux 2 Max: photoreal hybrids and surfaces
- ✓ Qwen: stylized illustration with detail