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Two identical benchmark test rigs on a bright lab bench, one with a task-set drive tray caught half-slid into its bay while the other rig's matching tray already sits seated and latched

OpenAI and Claude on Agentic Coding: What the Independent Evidence Actually Shows

System cards show resolve rates climbing fast on SWE-bench Verified and Terminal-Bench, but scaffold, effort, and test-oracle strength move a score as much as weights do. The one reproduction holding harness fixed separates OpenAI and Claude by under a point.

By Brecht Corbeel · August 12, 2026 · 15 min read

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