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YesCodex · 14 Sep 2026

I get remarkably good results using any recent OpenAI model using the codex-rs harness pointing at a built checkout of the PR

amluto on Hacker News

In the thread “GPT-5.6 Luna vs. GPT-6 Astra: Is a $1.20 Model Good Enough for Code Review?”

Helped: Using codex-rs harness with shell access and AGENTS.md context.

This article is missing an incredibly important detail: what is the harness doing? I get remarkably good results using any recent OpenAI model using the codex-rs harness pointing at a built checkout of the PR. The models use the available tools (i.e. …