GPT-5.6 Luna vs. GPT-6 Astra: Is a $1.20 Model Good Enough for Code Review?
SMRTR summary
A benchmark comparing GPT-5.6 Luna and GPT-6 Astra on 50 real pull requests reveals a sharp cost-vs-quality tradeoff. Luna found 75% as many verified bugs as Astra for just 3.6% of the cost, but one in four of its findings were wrong, and it caught only 9 of 24 security bugs. Astra dominated on authentication and permission code, where Luna's miss rate was highest.
SMRTR provides this summary for quick context. The original article belongs to Hacker News.
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