Same 3D house prompt: Claude Opus 5.5 vs GPT-6 Astra
Given the same prompt, Claude Opus 5.5 finished in 18 minutes 51 seconds at $0.87, while Astra took 32 minutes at $1.62 and used nearly three times the tokens.
SAME PROMPT, 2x SPEED & COST DIFFERENCE: CLAUDE OPUS 5.5 VS GPT-6 ASTRA In a head-to-head AI build battle, Claude Opus 5.5 and GPT-6 Astra were given the exact same prompt: build a huge 3-story house with a garden in a 3D environment. Claude Opus 5.5 (Anthropic) • Time: 18:51 min • Cost: $0.87 • Tokens: 64,380 • Output: Modern high-tech villa featuring a glass studio, solar roof, and infinity pool. GPT-6 Astra (OpenAI) • Time: 32:06 min • Cost: $1.62 • Tokens: 183,920 • Output: Detailed classic mansion with a front porch, fountain, and hedge maze. Claude wins on pure architectural efficiency-finishing nearly 2x faster while consuming nearly 3x fewer tokens. GPT-6 Astra leans heavily into intricate decoration and structural complexity, but pays for it with severe context bloat and a doubled price tag.
This post quotes another post: “Opus 5.5 vs Sonnet 5.5 on an X-ray fly simulation coding task”