OpenAI Codex Tip: Enable Max Reasoning for Luna at 1/6th the Cost
daniel_mac8 · x · 2026-08-01
A user points out that OpenAI Codex has Max reasoning effort disabled by default. Developers are advised to manually enable it, as Luna at Max reasoning reportedly performs similarly to Sol Medium or Opus 5 Medium, but at only 1/6th of the cost.
Related event: Enabling Codex Max Reasoning Boosts Performance and Cuts Costs(3 posts)→
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