We have seen multi model harnesses for cheaper & faster tasks
What about for the hardest challenges?
What about open source?
Proud to share the latest update our Zenith harness, taking models you can use today above Fable on tasks that take hours or days
Intelligent Internet@ii_posts
You don't need Fable for the most complex tasks, from training models for protein prediction to optimising compilers
Our open source Zenith harness takes base models to the top of FrontierSWE via adaptive self improvement
GLM 5.2 next 👀
https://ii.inc/blog/post/zenith
12:17 PM · Jun 29, 2026 · 12.4K Views
