A model called “Obsidian 3” appeared in screenshots of Cognition’s FrontierCode 2.0…
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A model called “Obsidian 3” appeared in screenshots of Cognition’s FrontierCode 2.0 data, scoring 46.8% at high effort versus 45.5% for Opus 5.5 at max. The screenshots also show Obsidian falling to 45.5% at max effort. (disappointing if Fabel 5.5) more inference spend didn’t produce a better result on this run compared to the model they had months ago. FrontierCode. Grades engineering requirements across 132 tasks, including things a developer should infer even when they aren’t spelled out. Fixing the immediate bug can still leave a change that isn’t ready to merge.
Posted by Chris (72.2k followers) 2 days ago · 176 likes · 16.5k views · view the original post on X. Kept by the Dev Radar as AI dev tools. Tools mentioned: FrontierCode Leaderboard.
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