He says OpenRouter routes Batch API requests to the cheapest provider, and that callers can use /chat/completions, /responses, or /messages on all models. Requests can be polled for a full response without a files API, and bring-your-own-key works.
Each batch appears in the Batches tab of OpenRouter logs with its model, provider, status, and cost. Inputs and results are kept for 30 days or until the batch is deleted.
Images and files must be public URLs, not base64. Audio and video input are not accepted, and OpenRouter’s own web plugin is not available in batch.
OpenRouter’s Batch API is available for work that does not need an immediate answer. It cuts per-token pricing in half on most models and returns results within 24 hours.
