Specialist test. Evaluate this separately from the eight core tests. Explore the active suite →
Focused model compare
Yingzao Fashi Assembly
Claude Fable 5 is the starting run, compared with Claude Opus 5.5, GPT-6 Astra, GPT-6 Sol.
Starting model
Claude Fable 5
Anthropic
Claude Opus 5.5
OpenAI
GPT-6 Astra
OpenAI