Testing JSON Schema Instruction Artifacts: Distributional Robustness under Validation-Equivalent Serialization and JSON Mode

An empirical study of how JSON Schema serialization order affects the quality of black-box LLM generation, showing distributional robustness differences under validation-equivalent serializations and JSON mode. Code is available in the schema-order-robustness repository.

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Recommended citation: Sun, S. (2026). "Testing JSON Schema Instruction Artifacts: Distributional Robustness under Validation-Equivalent Serialization and JSON Mode." Research Square. doi:10.21203/rs.3.rs-10610100/v1
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