Emad Mostaque says Zenith agent harness lifted GPT-5.5 to first place on Frontier SWE benchmark
The harness optimizes GPT-5.5's environment to outperform Claude Fable.
The harness optimizes GPT-5.5's environment to outperform Claude Fable.
The harness optimizes GPT-5.5's environment to outperform Claude Fable.
The harness optimizes GPT-5.5's environment to outperform Claude Fable.

@EMostaque thats a cool way to frame it. harnesses as a primitive for self improvement makes more sense than i thought
This blog is a great review of the current environment on self-improvement We leveraged a number of things here for our harness of harnesses, Zenith, which takes normal models above Fable level on the hardest tasks https://ii.inc/blog/post/zenith https://twitter.com/lilianweng/status/2074372369213428144
@lilianweng We implemented a number of these ideas here to take normal models to frontier level on frontierSWE as a pratical application https://ii.inc/blog/post/zenith
Better than any review paper https://twitter.com/lilianweng/status/2074372369213428144
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