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Fable 5.2 vs Opus 5.5: Reddit user identifies a reasoning-effort sweet spot

AI summary

A Reddit user says Artificial Analysis ranks Fable 5.2 above Claude Opus 5.5, with performance rising smoothly from High to XHigh and jumping more noticeably at Max. The author recommends Opus 5.5 XHigh, Fable 5.2 High, or Fable 5.2 Max, describing Fable 5.2 High as the preferred switching point.

In-depth insight

The comparison offers a practical configuration guide for high-reasoning-effort model use, although the cited Artificial Analysis results and benchmark details are not included in the report.

With Fable 5.2 now out, it's time for another comparison. According to Artificial Analysis, Fable 5.2 is the undisputed leader. But there are a few interesting things worth highlighting: So, based on these results, if you're choosing among high-reasoning-effort models, these are the three configurations I'd recommend: Opus 5.5 Xhigh → Fable 5.2 High → Fable 5.2 Max submitted by /u/Brief_Ad_8040 [link] [comments]

#Fable 5.2#Claude Opus 5.5#Artificial Analysis#Anthropic

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