Flappy Bird coding test: Kimi K3 costs 9x more than DeepSeek V4 Flash

Arindam_1729 · x · 2026-09-03

The author tested DeepSeek V4 Flash, Kimi K3, and Muse Spark 1.3 (all via Nebius) on the same Flappy Bird prompt. Muse Spark 1.3 produced the most polished game — animated bird, parallax layers, scoring, persistent best score — at $0.0163 on the contributor tier. DeepSeek V4 Flash was the strongest budget option at $0.0267 with a 3D-style effect, while Kimi K3 delivered a simpler result at $0.2268 — roughly 9x DeepSeek's cost and 14x Muse Spark's. For this task, Muse Spark offered the best quality-cost balance.

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