Focused model compare
Hogwarts Broom Flight Simulator
Claude Opus 5 is the starting run, compared with Claude Opus 5.5, GPT-6 Astra, GPT-6 Sol.
Starting model
Claude Opus 5
Anthropic
Claude Opus 5.5
OpenAI
GPT-6 Astra
OpenAI
Open →
Open →
Open →
Open →