{
  "$type": "site.standard.document",
  "bskyPostRef": {
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  "path": "/t/responses-api-with-file-input-in-the-background-mode-server-error-with-pdfs/1377680#post_4",
  "publishedAt": "2026-03-24T18:12:15.000Z",
  "site": "https://community.openai.com",
  "textContent": "**Adding data points and a workaround.**\n\nI’m hitting the same issue with **gpt-5** (`gpt-5-2025-08-07`). After isolation testing, the bug is specifically `background: true` + `input_file` in message content. The same files work fine when routed through code interpreter’s `container.file_ids` with background mode on.\n\nThe dashboard shows “No input items” for failed runs, but the payload is confirmed correct (logged exact JSON before POST).\n\n**Failed request IDs:** `wfr_019d1db3689f76e18b535c7462f92b59` `wfr_019d1e013b797b878cf46f648d6374e7` `wfr_019d1e1cbc3a796e86336959cc91b6ab`\n\n**Workaround:** Route files through code interpreter `container.file_ids` instead of `input_file`. The model can still read the file — it just spins up a container.",
  "title": "Responses API with file input in the background mode: server error with PDFs"
}