API reference / Batches Check a batch before sending Copy for LLM Copy for LLMThis page as Markdown, ready to paste into an AI tool View as Markdown/docs/api/batches/preflight.md Copy OpenAPI operationThis endpoint's OpenAPI definition, as JSON Open in ClaudeStarts a chat with this page Open in ChatGPTThe same, in ChatGPT For agents: llms.txt · llms-full.txt · openapi.json GET/v1/batches/{id}/preflight The checklist before Send out, and the most the batch can cost. Path parameters idstringrequired The batch's ID, starting bat_. Returns200 application/json. The checks and the estimate.Errors have one shape; see Errors for every code.