~ same prompt, different LLM — every model gets the same brief in Blender, you judge the render ~
OpenAI / GPT 6 Astra / thinking:max has entered the arena NEW!
Plaster head after the antiqueCategory: sculptCapture: stillsPrompt: v2Difficulty: ▮▮▮▮
TX: plaster-bust.md — composed prompt
── block: build-request-open@v2 (start, global) ──

Task

Complete the following Blender task:

<task>

A classical head bust in the Greco-Roman tradition — the kind of plaster cast after the antique that sits in every drawing atelier — presented alone on a pedestal under studio light. This is a pure sculpting test: no costume, no scene, no story to hide behind. The face is the whole assignment.

The head. An idealized classical head in the manner of the great antique casts (a David, an Apollo, a Doryphoros — the specific reference is free, the idiom is not): calm, symmetric, youthful-heroic features with the canonical structure that atelier casts exist to teach. The planes of the face must be right — brow ridge stepping to the nose, clear cheekbone structure, the philtrum and the strong classical mouth, eyes with sculpted (not textured) iris-and-pupil suggestion or the blank antique eye — choose one convention and hold it. Hair in sculpted classical curls or waves with real clumped mass, not a smooth cap and not noise. The head sits on a neck cut off in the traditional bust termination — a clean geometric truncation into a small integral socle, or shoulders ending in the classic broken-edge cut.

Anatomy is judged mercilessly here. A slightly stylized but structurally correct head beats an uncanny near-likeness. Asymmetry from sculpting is human and fine; collapsed eye sockets, pasted-on ears, or a rubber jawline are not.

Material — plaster or marble, committed. Either: matte white atelier plaster with the subtlest subsurface scattering, faint seam lines from the casting mold, small chips at the socle edge, and a whisper of dust-grey in the recesses; or white statuary marble with soft SSS depth and delicate grey veining that follows the form. Pick one and make it convincing at close range. No pure-white shadeless material — the render must prove the material has depth.

Pedestal & setting. A simple column pedestal or plinth, a neutral studio backdrop, nothing else. One soft key light placed to rake the facial planes the way a drawing instructor would set it — form shadow down one side of the nose and cheek, a clear terminator, gentle bounce fill so the shadow side keeps its planes. The classic atelier lighting is part of the brief.

Composition. Camera at the bust's eye level, three-quarter view, head filling most of the frame. The final image should look like a photograph from a cast collection catalogue.

── block: build-request-close@v2 (end, global) ──
</task>
RUNS ON THIS TASKview in gallery →
RUNPROMPTCONTESTANTSTATUSCOST
r1 · 2026-09-06v2OpenAI / GPT 6 Astra / thinking:mediumok$0.69
r1 · 2026-07-31v2OpenAI / GPT 5.6 Luna / thinking:maxok$0.04
r1 · 2026-07-19v2Google / Gemma 4 31b Itok$0.00
r1 · 2026-07-19v2Google / Gemini 3.5 Flash / thinking:mediumok$0.22
r1 · 2026-07-19v2DeepSeek / Deepseek V4 Flashok$0.00
r1 · 2026-07-19v2Anthropic / Sonnet 5 / thinking:lowok$0.12
r2 · 2026-07-17v2OpenAI / GPT 5.6 Lunaok$0.03
r1 · 2026-07-17v2OpenAI / GPT 5.6 Lunaok$0.05
r1 · 2026-07-16v2Anthropic / Sonnet 5ok$0.98
r1 · 2026-07-16v2OpenAI / GPT 5.6 Lunaok$0.04
Votes cast on this bench: 000482 · 157 runs · 25 contestants
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