| name | logo |
| description | Generate a production-grade logo (primary brand mark). Returns RGBA PNG master + SVG vector + monochrome variant. Route by text-length and per-model ceiling. Strong-text models render multi-word and even paragraph-length wordmarks reliably; weak-text models composite SVG type post-render. |
| trigger_phrases | ["generate a logo","make a logo","design a logo","brand mark","logo for my app"] |
Logo generation
Spec
- Master: 1024×1024 RGBA PNG, transparent background, subject centered in 80% safe zone
- Vector: SVG, ≤200 paths, fixed viewBox, SVGO optimized
- Monochrome: 1-color mono variant (auto-derived via luminance threshold or separate generation)
- Wordmark routing — model-specific, not blanket:
- Paragraph-length OK:
gpt-image-2, gemini-3-pro-image-preview (Nano Banana Pro), gpt-image-1.5. Include the wordmark in the prompt; composite stays safer for pixel-exact UI copy.
- 3–10 words reliable:
ideogram-3 / ideogram-3-turbo, gemini-3.1-flash-image-preview (Nano Banana 2), gpt-image-1, flux-2 family.
- ≤3 words / ≤25 chars: Imagen 4 family, Recraft V4.
- Composite always: Flux 1.x, Flux Schnell, SDXL, SD 1.5, Mystic, Pollinations, original Nano Banana 1.
Routing by intent
| text in mark? | vector needed? | primary | fallback |
|---|
| none | yes | Recraft V4 (native SVG) | gpt-image-1.5 → BiRefNet → vtracer |
| none | no | gpt-image-1.5 (background:"transparent") | Ideogram 3 Turbo (dedicated /v1/ideogram-v3/generate-transparent endpoint, rendering_speed:"TURBO") |
| 1–3 words | yes | Ideogram 3 → raster 1024 → BiRefNet → K-means(6) → vtracer → SVGO | Recraft V4 |
| 1–3 words | no | Ideogram 3 | gpt-image-1.5 |
| 4–10 words | yes | flux-2 / gpt-image-2 → raster 1024 → BiRefNet → K-means(6) → vtracer → SVGO | Nano Banana Pro |
| 4–10 words | no | flux-2 family or gpt-image-2 (note: gpt-image-2 has no native RGBA — matte after) | Nano Banana Pro |
| paragraph | any | Nano Banana Pro or gpt-image-2; composite is still safer for pixel-exact UI copy | composite via BrandBundle.typography |
Dialect-ready prompt scaffold
A [flat vector | isometric | brutalist | soft gradient] logo mark representing [SUBJECT, concrete noun phrase].
Centered composition. Clean silhouette, strong tight outline, high contrast.
Palette: [#hex, #hex, #hex] strictly.
["WORDMARK TEXT" in sans-serif, tight tracking | text-free mark].
Solid pure white background. Square 1:1 aspect. 1024x1024.
For SD: prepend masterpiece, vector logo, flat design, minimalist, 8k, .
For Flux: drop all quality modifiers; be concrete about subject and palette.
Post-process
- BiRefNet matte (or Recraft SVG → rasterize at 1024).
- Checkerboard-pattern probe: reject if failed.
- If SVG needed: K-means 6-color →
vtracer --mode polygon → SVGO (conservative preset).
- Monochrome variant: greyscale → Otsu threshold → tint brand black.
- Validate: tight-bbox ≤ 80% safe zone, palette ΔE2000 ≤ 10, OCR matches wordmark if present.
Failure → action
- Checkerboard → route to
gpt-image-1 (different provider).
- Wordmark garbled → regenerate mark text-free, composite SVG type.
- Palette drift → Recraft
controls.colors or recolor post.
-
200 SVG paths → regenerate with "simpler geometry" or raise K-means color count.
Output
logo/
├── master.png # 1024² RGBA
├── mark.svg # vector
├── mark-mono.svg # monochrome
├── mark-inverse.png # dark-mode variant
└── meta.json # provenance + validations
