GPT-5.6 Luna vs GPT-6 Astra: Is a $1.20 Model Good Enough for Code Review?
Summary
GPT-5.6 Luna vs GPT-6 Astra compares two AI code-review models on a benchmark of 50 PRs, focusing on cost, bug detection, precision, and speed. Luna is far cheaper but less precise, especially on security-related bugs, while Astra finds more verified bugs at higher cost; the piece suggests a mixed-model approach depending on risk tolerance.