GPT-5.6 Luna Beats Gemini 3.7 Flash in Score at One-Third the Cost

haider1 · x · 2026-08-14

The author compared OpenAI's GPT-5.6 Luna against Google's Gemini 3.7 Flash. Data shows that GPT-5.6 Luna slightly outperforms Gemini 3.7 Flash in task scores, achieving 67% compared to 65%.

What stands out most is the cost difference: GPT-5.6 Luna costs only $0.61 per task, whereas Gemini 3.7 Flash is priced at $2.18. The author noted that either OpenAI cooked insanely hard with this model, or Google seriously missed the mark on cost efficiency with Gemini 3.7 Flash.

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