{"id": "1t7dqnc", "title": "GPT-5.5 low vs medium vs high vs xhigh: the reasoning curve on 26 real tasks from an open source repo", "subreddit": "codex", "url": "https://www.reddit.com/r/codex/comments/1t7dqnc/gpt55_low_vs_medium_vs_high_vs_xhigh_the/", "score": 410, "comments": 46, "selftext": "# TL;DR\n\nI ran GPT-5.5 Codex at all reasoning effort settings (low, medium, high, and xhigh) on the same 26 tasks from an open source repo (GraphQL-go-tools, in Go).\n\nLow and medium tied on tests at 21/26, but medium was much better on semantic equivalence with the original human PR, and posted higher review quality. High looked like the practical sweet spot. Xhigh produced the best equivalence/review scores, but was much more expensive.\n\nReasoning effort seems to change the *kind* of patch Code", "created_utc": 1778259416.0}