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Public story · 2026-08-31 · high
It splits agent composition from runtime adaptation, and its GitHub repos are still active, not archived research code.
Why now: The paper posted August 28 and both GitHub repos were still receiving pushes as of August 31.
An open-source coding harness called openJiuwen scored 82.6% on SWE-bench Verified and 87.19% on Terminal-Bench 2.1, according to the openJiuwen paper posted August 28. Those numbers beat the strongest official-leaderboard scores the paper selected for comparison, by 3.4 points on the coding benchmark and 3.39 on the terminal one. Both benchmarks score whether an agent finishes a multi-step coding task, not a single prompt, so a few points there is a wider gap than it looks.
The paper splits the harness problem into two pieces. Structural Composability lets developers combine single agents, delegated sub-agents, and a coordinated swarm on one shared execution layer. Runtime Adaptivity changes while a task runs, reading semantic diagnostics, execution outcomes, and task progress to rewrite context and feedback, all under a model policy that stays fixed.
The code behind the paper isn't sitting idle. The openJiuwen-ai/jiuwenswarm repo has 6,309 stars and its agent-core companion has 420, and both were pushed on August 31.
Each link below shares sources, entities, or timing with this story.
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