Gemini 4 Argon vs Opus 5.5 vs GPT-6 Astra: same prompts, real bills

A developer ran Gemini 4 Argon, Claude Opus 5.5 and GPT-6 Astra through identical prompts: a 3D car in Blender, a three.js Lamborghini, a one-shot 3D kart game and 82 labelled questions. Argon built a 43-object Blender model for $22.13, won the kart test on speed and cost ($0.306 vs Astra's $0.704), but was slowest on simple questions.

• Argon built a 3D car in Blender: 43 objects, 240 frames, $22.13 on API key
• Kart game: Argon 220.6s for $0.306, Astra 323.4s for $0.704, Opus cut off at 32,000 tokens
• 82 questions: Argon and Astra 82/82, Opus 81/82 due to answer format
• Argon pricing $2/$10 per 1M tokens until Nov 30, 2026, then $4/$20