Batch Prompt Formatter

Apply a prompt template with {column} placeholders across a CSV. Generates one prompt per row, then exports as the batch-format JSONL that OpenAI's and Anthropic's Batch APIs expect. Useful for running 10,000 evaluations or transformations at 50% discounted batch pricing.

How to use the Batch Prompt Formatter

Paste CSV with a header row. Write a prompt template referencing column names as {column}. Each row becomes one batch entry. Output is the JSONL format OpenAI's Batch API accepts (or Anthropic's). Upload to /v1/files, then create a batch job — half-price processing within 24h.