#642 Neil: GPT-6.1 Sol In Codex Surprised Me Across Three Real Tests

GPT-6.1 Sol looks strong on paper, but I wanted to see what happens inside Codex. I tested app building, 3D scene recreation, and robot-control logic to check its speed, output quality, planning, and the areas where Claude Sonnet 5.5 still feels stronger. ⚡

We'll Talk About:

• GPT-6.1 Sol pricing, context window, and reasoning levels
• Building a full browser OS inside Codex
• Recreating Jerry’s Apartment as a 3D scene
• Testing robot-arm planning in a browser simulation
• GPT-6.1 Sol speed, visual accuracy, and task completion
• How GPT-6.1 Sol compares with Claude Sonnet 5.5

Keywords: GPT-6.1 Sol, GPT-6.1 Sol Codex, GPT-6.1 Sol Review, Claude Sonnet 5.5, AI Coding Model, AI Tools.

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