Cursor’s agent swarm hit 100% on SQLite tests when planners and workers were split
The Decoder · rss · 2026-07-26
The Decoder reports that Cursor’s upgraded agent swarm, which separates planners from workers, rebuilt SQLite in Rust using only documentation and no internet or source code.
Key takeaway:
- every configuration of the new system eventually reached 100% test-suite pass rate
- the older swarm got stuck on merge conflicts it created itself
- the result suggests cheaper models can do most of the coding when frontier models focus on planning
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