Codex Spark vs Codex 5.3 vs Claude: Which AI Coding Tool Wins?

A developer on X posted last week that Codex Spark generated a full SpriteKit game in 20 minutes. He called it "INSANELY FAST". Same day, another engineer warned the model "trades brains for speed". Both were right. OpenAI dropped GPT-5.3-Codex-Spark...