id: String

The unique ID of the function call tool output.

output: String | Array[BetaResponseInputText { text, type, prompt_cache_breakpoint } | BetaResponseInputImage { detail, type, file_id, 2 more } | BetaResponseInputFile { type, detail, file_data, 4 more } ]

The output from the function call generated by your code. Can be a string or an list of output content.

One of the following:

String = String

A string of the output of the function call.

OutputContentList = Array[BetaResponseInputText { text, type, prompt_cache_breakpoint } | BetaResponseInputImage { detail, type, file_id, 2 more } | BetaResponseInputFile { type, detail, file_data, 4 more } ]

Text, image, or file output of the function call.

One of the following:

class BetaResponseInputText { text, type, prompt_cache_breakpoint }

A text input to the model.

text: String

The text input to the model.

type: :input_text

The type of the input item. Always input_text.

prompt_cache_breakpoint: PromptCacheBreakpoint{ mode}

Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request’s prompt_cache_options.ttl; the boundary is not rounded to a token block.

mode: :explicit

The breakpoint mode. Always explicit.

class BetaResponseInputImage { detail, type, file_id, 2 more }

An image input to the model. Learn about image inputs.

detail: :low | :high | :auto | :original

The detail level of the image to be sent to the model. One of high, low, auto, or original. Defaults to auto.

One of the following:

:low

:high

:auto

:original

type: :input_image

The type of the input item. Always input_image.

file_id: String

The ID of the file to be sent to the model.

image_url: String

The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.

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prompt_cache_breakpoint: PromptCacheBreakpoint{ mode}

Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request’s prompt_cache_options.ttl; the boundary is not rounded to a token block.

mode: :explicit

The breakpoint mode. Always explicit.

class BetaResponseInputFile { type, detail, file_data, 4 more }

A file input to the model.

type: :input_file

The type of the input item. Always input_file.

detail: :auto | :low | :high

The detail level of the file to be sent to the model. Use auto to let the system select the detail level; for GPT-5.6 and later models, auto uses high-quality rendering, which may increase input token usage. Use low for lower-cost rendering, or high to render the file at higher quality. Defaults to auto.

One of the following:

:auto

:low

:high

file_data: String

The content of the file to be sent to the model.

file_id: String

The ID of the file to be sent to the model.

file_url: String

The URL of the file to be sent to the model.

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filename: String

The name of the file to be sent to the model.

prompt_cache_breakpoint: PromptCacheBreakpoint{ mode}

Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request’s prompt_cache_options.ttl; the boundary is not rounded to a token block.

mode: :explicit

The breakpoint mode. Always explicit.

status: :in_progress | :completed | :incomplete

The status of the item. One of in_progress, completed, or incomplete. Populated when items are returned via API.

One of the following:

:in_progress

:completed

:incomplete

type: :function_call_output

The type of the function tool call output. Always function_call_output.

agent: Agent{ agent_name}

The agent that produced this item.

agent_name: String

The canonical name of the agent that produced this item.

call_id: String

The unique ID of the function tool call generated by the model.

caller_: Direct{ type} | Program{ caller_id, type}

The execution context that produced this tool call.

One of the following:

class Direct { type }

type: :direct

The caller type. Always direct.

class Program { caller_id, type }

caller_id: String

The call ID of the program item that produced this tool call.

minLength1

maxLength64

type: :program

The caller type. Always program.

created_by: String

The identifier of the actor that created the item.

name: String

The name of the tool that produced the output.

namespace: String

The namespace of the tool that produced the output.