Results brief 016 / Voxel Forge / Published September 1, 2026

claude-fable-5.1 takes on Sunwell Sanctuary

A bright terraced waterscape that tests radial composition, terrain integration, circulation, and daylight readability.

Bounded resultanthropic/claude-fable-5.1 produced a 77/100 artifact.Structured from the locked human evaluation. One run; no broader model rating is implied.
3 min readSeptember 1, 2026Voxel Forgeproofrun-v0.8
Modelanthropic/claude-fable-5.1
Confidencemedium
Artifact score77/100
Requirements met8/10
01 / Publication evidence

The result,
shown before explained.

Good but perhaps average result, camera positioning/composition is great and the scene is overall decent and coherent, but nothing out of the ordinary.Locked before model reveal
02 / Frozen evaluation

Requirements first.
Weighted quality second.

Frozen requirements10 judgments per artifact
RequirementArtifact
A large circular reflecting pool forms a clearly visible lower-center space with an open water surface.Met
A tall open-sided sun tower or observatory rises behind the pool and carries a luminous geometric crown or beacon.Met
A raised aqueduct visibly enters from one side and terminates in a waterfall that feeds the pool.Met
A broad stairway and a separate elevated bridge or ramp each visibly connect the lower and upper sanctuary levels.Missed
Gardens or substantial planted details appear across at least three visibly separated terraces or architectural areas.Met
Warm masonry, cool water or glass, and greenery create three clearly distinguishable material families.Met
The sanctuary visibly interlocks with stepped rock terrain rather than resting on an undifferentiated flat slab.Met
The scene uses a bright daytime environment with a pale sky and keeps shaded architectural detail readable.Met
The selected camera keeps the pool, waterfall, tower, circulation routes, gardens, and vertical layering readable together.Met
The response produces a renderable SceneScript scene within the frozen validator limits.Partial
Weighted criteriaArtifact 77

Spatial reasoning · 30%

Coherent three-dimensional placement, scale, connection, support, and navigable relationships.

Score8

Composition · 30%

Silhouette, depth, focal hierarchy, camera choice, balance, and use of negative space.

Score9

Scene craft · 25%

Material contrast, detail distribution, repetition, variation, and voxel-specific visual character.

Score7

Command economy · 15%

Complexity achieved through valid, bounded SceneScript rather than wasteful repetition or ignored operations.

Score7
03 / Run integrity

The claim, with its
conditions attached.

Model artifact5:41$1.2614 reported cost
Artifact score77/1008/10 requirements met
Protocolv0.8curated:voxel-forge-sunwell-sanctuary:v3
Immutable attempts and publication recordInspect provenance

This Results Brief is rendered from a sanitized, allowlisted record rather than AI-authored article prose. Credentials, raw responses, generated source, executable artifacts, and private reviewer notes remain in the private Studio.

Run recordPR-MTIZRVM9-37
Outcomesolo artifact
Test lineagev3 · curated:voxel-forge-sunwell-sanctuary:v3
Identityrevealed
Evaluationlocked
Record hashsha256:510af93eb3b315666176a398f60e8b8b6e752ea9f8f1dabc2dbf754a0c5e9b4c
Immutable attempt ledger

A #1 original: completed submission (normal, Anthropic)

Download the hashed publication record