Dan Luu 8/9/2026

What's the best programming language for coding agents?

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This article examines the claim that dynamic languages like Clojure and J are more token-efficient than static languages (e.g., Rust, Go) for coding agents, citing studies showing up to 2.6x differences. However, the author critiques these evals for using trivial problems that don't generalize, and highlights methodological flaws like symlink errors in test execution. The article suggests running custom evals to better understand token efficiency, emphasizing the need for realistic tasks and rigorous experimental design in evaluating language performance for AI coding agents.

What's the best programming language for coding agents?

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