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@Xudong07452910 · After 70 Coding-Agent Rounds: Harness-of-Harness

@Xudong07452910（Xudong Han） X Saved 09/03/2026

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Key takeaways

Harness-of-Harness organizes coding frameworks like Codex, OpenCode, and Pi into a cyclic iterative development flow; each round includes planning, implementation, and independent QA acceptance.
Across 70 development rounds, 81 issues were recorded and 65 closed; 17 issues reappeared due to later changes, showing regression.
Experiments show HoH improves ~52.25% on average vs. standalone frameworks across three benchmarks; on FrontierSWE, Codex + GPT-5.5 rose from 22% to 72.67%.
The key for long-running coding agents is preserving verified progress and preventing new features from reintroducing old bugs—engineering continuity.

Details

Author: @Xudong07452910（Xudong Han）
Source: X · X post
Published: 09/03/2026
Saved: 09/03/2026

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@Xudong07452910 · After 70 Coding-Agent Rounds: Harness-of-Harness

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