Evaluation only — never training data

Where the bar is

Two real Tokyo buildings built by Claude Opus agents on 21 September 2026 with the new reference data: the surveyed roof heights and wall textures from PLATEAU's LOD2 city model, and the orthophoto at full resolution. In every pair the left image is the exterior from the south-east and the right image has the south half cut away.

Read these as four build conditions, not four distinct models or a controlled leaderboard. Reference data, date, model and reasoning effort differ. Scores summarize offline structural checks; roof-height agreement is a separate metric against geometry supplied to the agent. Interiors are generated interpretations. Select any image for its original size.

ザ・ペニンシュラ東京 — The Peninsula Tokyo

Opus: verifier score 0.9967 · 5,211 / 5,216 known roof columns within 2 blocks of the supplied survey · rounded mean height error 0.1 blocks · 95×92 plan, 174-layer array, 24 surveyed storeys

The Peninsula Tokyo: Opus with the new data beside DeepSeek working from text only
Left pair: Opus with the new data — entrance canopy, podium ledge, tower, finned crown with helipad and plant, a furnished interior on every floor. Right pair: DeepSeek-V4.1-Flash at high effort from text only, before this data existed — one extrusion with a glass box on top.
Contact sheet of the Opus Peninsula build with layer plans
The Opus build's contact sheet: exterior, cutaway and layer plans. Select the image to inspect the full-size sheet.

IMAI BLDG.

Opus with the new data: verifier score 0.9988 · 108 / 108 known roof columns within 2 blocks of the supplied survey · rounded mean height error 0.4 blocks · 10×14 plan, five surveyed storeys

IMAI BLDG.: four builds with different models and reference inputs
From left: Opus with the new data (the pale frame and stacked glazed bays the wall photograph shows); Opus on 15 September without it (brown tile, invented); DeepSeek at low effort from text only; the untrained Gemma 4 12B.
Contact sheet of the Opus IMAI build with layer plans
The Opus build's contact sheet with layer plans.