DeepSeek V4 Flash vs Kimi K3 vs GLM 5.2 on FlappyBench

We ran a test between the new DeepSeek V4 Flash, Kimi K3 and GLM 5.2. 3 open models. 1 prompt. /design command. Reviewed gameplay features, UX/UI and cost.

• Kimi K3 → 9.5/10 · $0.0740
• GLM 5.2 → 9/10 · $0.0480
• DeepSeek V4 Flash → 7/10 · $0.0005

DeepSeek V4 Flash is ~150x cheaper, but rough around edges. Kimi K3 and GLM 5.2 built the most polished gaming experience.

Our engineering and design team has been testing 20+ side-by-side comparisons across frontier and open models. All runs are public and open source. Benchmark for this demo here: github.com/CommandCodeAI/slash-design-showcase/tree/main/flappy-bird

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