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[ARTICLE · art-24522] src=news.ycombinator.com ↗ pub= topic=large-language-models verified=true sentiment=· neutral

Ask HN: Why not compare Fable 5 with GPT "Pro"? Why compare with GPT xhigh?

Benchmarks comparing AI models consistently pit Fable 5 against GPT 5.5 xhigh, but a user argues this is an unfair matchup because GPT 5.5 Pro, which has been available for some time and outperforms Opus 4.8 Max, would be a more appropriate comparison. The user notes that both Fable 5 and GPT Pro have long response times, unlike GPT xhigh which often responds in minutes, raising questions about the validity of current benchmark choices.

read1 min publishedJun 11, 2026

| |||||||||||| 1 point by | Every benchmark I see compares the super model Fable 5 with GPT 5.5 xhigh, but that's not a fair comparison because GPT 5.5 Pro has existed for a while and consistently delivers better results than Opus 4.8 Max, so doesn't it make more sense to compare Fable 5 with GPT Pro, instead? FYI, both of them take a long time to respond, as opposed to GPT xhigh which often returns in a couple of minutes. | ||||||||||| |

source & further reading
news.ycombinator.com — original article I built a one click installer on token compression engine for AI tools Ask HN: What is the AI adoption approach at your org? What task are humans still better at than AI?
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