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The Reflex team optimized Python's ast.walk by 220x for their AI code generation linter by removing generator overhead, inlining functions, and implementing a Rust binding.
A benchmark shows that computer-use agents are 45x more expensive than structured API calls for the same task, due to high token usage from screenshots and multiple steps. The author argues that for internal tools with exposed state, API-based agents are more efficient, and promotes Reflex 0.9 which auto-generates APIs from app handlers.