OpenAI Batch JSONL Validator

Validate Batch API JSONL input locally: parse checks, required fields, and duplicate custom_id detection.

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About This Tool

This validator checks JSONL lines for common OpenAI Batch API input requirements. It runs entirely in your browser, highlights parse and schema issues, and helps you export only valid lines.

Frequently Asked Questions

Does this guarantee the API will accept my file?

No. It is a fast local validator for common errors. Final validation is still done by the API.

Is my batch input uploaded?

No. All parsing and validation happen locally in your browser.

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OpenAI Batch JSONL Validator vs JSONL Batch Splitter

Batch line validation vs dataset splitting for batch size limits.

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Before This Tool

JSONL Batch SplitterSplit large JSONL datasets into chunked files by line count or byte size limits.Prompt Test Case GeneratorGenerate deterministic prompt evaluation cases and JSONL exports for regression testing.Prompt Regression Suite BuilderCompare prompt versions, detect removed constraints, and generate deterministic QA suites.

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