DeepSeek V4 Flash vs. OpenAI Luna: A Same-Tier Price and Performance Showdown
eyishazyer · x · 2026-08-02
DeepSeek's newly released V4 Flash 0731 is priced at $0.28/M output, placing it in the exact same budget bracket as OpenAI's GPT-5.6 Luna (after an 80% price cut to $1.20/M and OpenRouter's promo bringing it to $0.60/M).
The author tested both models with identical prompts across three Canvas generation tasks:
- Rubik's Cube: DeepSeek executes rotations cleanly, while Luna suffers from severe bugs with stickers flying off mid-move.
- Fireworks: Both perform decently, but Luna lags significantly during the explosion burst.
- Pen Writing: Neither model produces legible text, but DeepSeek generates a flowing cursive animation, whereas Luna gives up on animating entirely and outputs a static image.
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