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Upload file

post /files

Upload a file that can be used across various endpoints. Individual files can be up to 512 MB, and each project can store up to 2.5 TB of files in total. There is no organization-wide storage limit.

  • The Assistants API supports files up to 2 million tokens and of specific file types. See the Assistants Tools guide for details.
  • The Fine-tuning API only supports .jsonl files. The input also has certain required formats for fine-tuning chat or completions models.
  • The Batch API only supports .jsonl files up to 200 MB in size. The input also has a specific required format.

Please contact us if you need to increase these storage limits.

Returns

  • FileObject object { id, bytes, created_at, 6 more }

    The File object represents a document that has been uploaded to OpenAI.

    • id: string

      The file identifier, which can be referenced in the API endpoints.

    • bytes: number

      The size of the file, in bytes.

    • created_at: number

      The Unix timestamp (in seconds) for when the file was created.

    • filename: string

      The name of the file.

    • object: "file"

      The object type, which is always file.

      • "file"

    • purpose: "assistants" or "assistants_output" or "batch" or 5 more

      The intended purpose of the file. Supported values are assistants, assistants_output, batch, batch_output, fine-tune, fine-tune-results, vision, and user_data.

      • "assistants"

      • "assistants_output"

      • "batch"

      • "batch_output"

      • "fine-tune"

      • "fine-tune-results"

      • "vision"

      • "user_data"

    • status: "uploaded" or "processed" or "error"

      Deprecated. The current status of the file, which can be either uploaded, processed, or error.

      • "uploaded"

      • "processed"

      • "error"

    • expires_at: optional number

      The Unix timestamp (in seconds) for when the file will expire.

    • status_details: optional string

      Deprecated. For details on why a fine-tuning training file failed validation, see the error field on fine_tuning.job.

Example

curl https://api.openai.com/v1/files \
    -H 'Content-Type: multipart/form-data' \
    -H "Authorization: Bearer $OPENAI_API_KEY" \
    -F 'file=@/path/to/file' \
    -F purpose=assistants

Response

{
  "id": "id",
  "bytes": 0,
  "created_at": 0,
  "filename": "filename",
  "object": "file",
  "purpose": "assistants",
  "status": "uploaded",
  "expires_at": 0,
  "status_details": "status_details"
}

Example

curl https://api.openai.com/v1/files \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -F purpose="fine-tune" \
  -F file="@mydata.jsonl"
  -F expires_after[anchor]="created_at"
  -F expires_after[seconds]=2592000

Response

{
  "id": "file-abc123",
  "object": "file",
  "bytes": 120000,
  "created_at": 1677610602,
  "expires_at": 1677614202,
  "filename": "mydata.jsonl",
  "purpose": "fine-tune",
}