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  "created_at": "2026-11-08T10:42:17.3597497\u002B01:00",
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  "prompt": "A top-down flat lay studio photograph, camera looking straight down, of nine material samples from Italian rooms of regional stone, laid on a matte warm light-grey paper backdrop. The samples are arranged in a calm, balanced, slightly asymmetric composition with generous even spacing; the anchor piece is the largest, and one or two samples overlap a neighbour slightly. Each sample is a small, plainly cut offcut of the real material, as an architect\u0027s supplier would send it, matching the material, finish and colour of the named room. Do not depict the buildings or any part of them: no architectural forms, no openings, no ornament, no carving, no motifs. The samples: (1) the largest piece and the anchor, a sample of pale warm grey-beige Aurisina limestone with fine dark specks and faint brown flecks and very little veining: two slabs butted with a hairline joint and a flush brass strip about 1 cm wide, one slab honed matte, the other polished almost to a mirror reflecting the softbox crisply, and a narrow rough cleft-face strip, warmer in tone, along one edge; sharp square arrises, as used at Negozio Olivetti, Venice, floor treads and wall panels; (2) a small panel of small rectangular marble pieces 5 to 10 cm in white, salmon pink, orange-red, dark aubergine brown, grey-green and dark green, laid in straight rows with tight joints, framed along one side by a continuous white marble band, honed to a soft satin, as used at Fondazione Querini Stampalia, Venice, the ground-floor hall floor; (3) a square of honed Rosso Verona, salmon red with nodular mottling of 1 to 5 cm, inlaid with a straight strip of white, finely crystalline Lasa marble about 4 cm wide, as used at Casa Balboni, Venice, floors; (4) a square of honed Botticino marble, warm beige, fine, with thin grey stylolite veins, as used at Banca Popolare di Verona, plinth; (5) a strip of honed pink Prun limestone with thin straight parallel bedding lines in bands of 2 to 10 mm; not travertine, no pores, no wavy veins, as used at Museo di Castelvecchio, Verona, soffits and reveals of the arched passages; (6) a strip of honed pale cream Prun limestone about 6 cm wide with the same fine straight bedding; no pores, as used at Museo di Castelvecchio, Verona, floor bands across the galleries; (7) a thin flat slab of cream limestone about 6 cm thick with one rough-split face, as used at Casa Ottolenghi, Bardolino, stone rings of the columns; (8) a small square of Istrian stone, very pale grey-white, extremely fine and dense, no speckles, honed to satin, as used at Negozio Olivetti, Venice, piazza front slabs; (9) a small cube of Verona tuff, honey ochre, porous with open pores of only 1 to 3 mm, matte, slightly powdery at the arrises, as used at Museo di Castelvecchio, Verona, small display cubes in the galleries. Soft directional studio light from the upper left, like a large softbox, with a gentle fill; real soft shadows and contact shadows under every sample. Macro-level texture is visible on every surface. Neutral, calm, true colour; photographed on a medium-format camera, sharp and detailed, a well-composed professional studio photograph of an architect\u0027s material board. No text, no labels, no letters, no numbers, no logos, no tags or stickers. No people, no hands. No furniture, no plants, no flowers, no leaves, no props, no pens or tools, no house, no building, no architectural model, no room, no landscape. No emblems, no interlocking circles or ring motifs, no round windows, no carved figures or sculpture. Only the nine material samples on the backdrop.",
  "negative_prompt": null,
  "strength": null,
  "size": "1K",
  "aspect_ratio": null,
  "seed": null,
  "index": 0,
  "width": 1664,
  "height": 2080,
  "mime_type": "image/png",
  "source_image_path": null,
  "source_image_sha256": null,
  "source_is_viewer_capture": false,
  "camera": null,
  "control_image_path": null,
  "mask_path": null,
  "provider_job_id": "req_a4dac752e1e1469e98f0689e33defc64",
  "job_id": "rnd_3c26f8a32d94",
  "session_id": null,
  "turn_depth": 0,
  "warnings": [
    "provider_options replaced fields this adapter had set: quality. Values are passed to OpenAI verbatim and unvalidated."
  ],
  "cost_usd_estimate": 0.0790,
  "cost_source": "metered",
  "watermark": "c2pa",
  "elapsed_ms": 31136,
  "provenance": {
    "provider": "openai",
    "api_model": "gpt-image-2.5-sunburst",
    "endpoint": "v1/images/generations",
    "lane": "TextToImage",
    "size_requested": "1664x2080",
    "size_tier": "1K",
    "quality": "high",
    "output_format": "png",
    "watermark": "c2pa",
    "content_credentials": "c2pa",
    "moderation": "auto",
    "count": "1",
    "created": "2026-11-08T09:42:14.0000000Z",
    "size_reported": "1664x2080",
    "background": "opaque",
    "usage_input_tokens": "853",
    "usage_output_tokens": "2491",
    "usage_total_tokens": "3344",
    "usage_input_image_tokens": "0",
    "usage_input_text_tokens": "853"
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}