API Reference

Beta

Threads

Runs

Copy Markdown

Open in Claude

Open in ChatGPT

Open in Cursor

---

Copy Markdown

View as Markdown

Steps

Build Assistants that can call models and use tools.

List run steps

Deprecated

GET/threads/{thread_id}/runs/{run_id}/steps

Retrieve run step

Deprecated

GET/threads/{thread_id}/runs/{run_id}/steps/{step_id}

ModelsExpand Collapse

CodeInterpreterLogs object { index, type, logs }

Text output from the Code Interpreter tool call as part of a run step.

index: number

The index of the output in the outputs array.

type: "logs"

Always logs.

logs: optional string

The text output from the Code Interpreter tool call.

CodeInterpreterOutputImage object { index, type, image }

index: number

The index of the output in the outputs array.

type: "image"

Always image.

image: optional object { file_id }

file_id: optional string

The file ID of the image.

CodeInterpreterToolCall object { id, code_interpreter, type }

Details of the Code Interpreter tool call the run step was involved in.

id: string

The ID of the tool call.

code_interpreter: object { input, outputs }

The Code Interpreter tool call definition.

input: string

The input to the Code Interpreter tool call.

outputs: array of object { logs, type } or object { image, type }

The outputs from the Code Interpreter tool call. Code Interpreter can output one or more items, including text (logs) or images (image). Each of these are represented by a different object type.

One of the following:

CodeInterpreterLogOutput object { logs, type }

Text output from the Code Interpreter tool call as part of a run step.

logs: string

The text output from the Code Interpreter tool call.

type: "logs"

Always logs.

CodeInterpreterImageOutput object { image, type }

image: object { file_id }

file_id: string

The file ID of the image.

type: "image"

Always image.

type: "code_interpreter"

The type of tool call. This is always going to be code_interpreter for this type of tool call.

CodeInterpreterToolCallDelta object { index, type, id, code_interpreter }

Details of the Code Interpreter tool call the run step was involved in.

index: number

The index of the tool call in the tool calls array.

type: "code_interpreter"

The type of tool call. This is always going to be code_interpreter for this type of tool call.

id: optional string

The ID of the tool call.

code_interpreter: optional object { input, outputs }

The Code Interpreter tool call definition.

input: optional string

The input to the Code Interpreter tool call.

outputs: optional array of CodeInterpreterLogs { index, type, logs } or CodeInterpreterOutputImage { index, type, image }

The outputs from the Code Interpreter tool call. Code Interpreter can output one or more items, including text (logs) or images (image). Each of these are represented by a different object type.

One of the following:

CodeInterpreterLogs object { index, type, logs }

Text output from the Code Interpreter tool call as part of a run step.

index: number

The index of the output in the outputs array.

type: "logs"

Always logs.

logs: optional string

The text output from the Code Interpreter tool call.

CodeInterpreterOutputImage object { index, type, image }

index: number

The index of the output in the outputs array.

type: "image"

Always image.

image: optional object { file_id }

file_id: optional string

The file ID of the image.

FileSearchToolCall object { id, file_search, type }

id: string

The ID of the tool call object.

file_search: object { ranking_options, results }

For now, this is always going to be an empty object.

ranking_options: optional object { ranker, score_threshold }

The ranking options for the file search.

ranker: "auto" or "default_2024_08_21"

The ranker to use for the file search. If not specified will use the auto ranker.

One of the following:

"auto"

"default_2024_08_21"

score_threshold: number

The score threshold for the file search. All values must be a floating point number between 0 and 1.

minimum0

maximum1

results: optional array of object { file_id, file_name, score, content }

The results of the file search.

file_id: string

The ID of the file that result was found in.

file_name: string

The name of the file that result was found in.

score: number

The score of the result. All values must be a floating point number between 0 and 1.

minimum0

maximum1

content: optional array of object { text, type }

The content of the result that was found. The content is only included if requested via the include query parameter.

text: optional string

The text content of the file.

type: optional "text"

The type of the content.

type: "file_search"

The type of tool call. This is always going to be file_search for this type of tool call.

FileSearchToolCallDelta object { file_search, index, type, id }

file_search: unknown

For now, this is always going to be an empty object.

index: number

The index of the tool call in the tool calls array.

type: "file_search"

The type of tool call. This is always going to be file_search for this type of tool call.

id: optional string

The ID of the tool call object.

FunctionToolCall object { id, function, type }

id: string

The ID of the tool call object.

function: object { arguments, name, output }

The definition of the function that was called.

arguments: string

The arguments passed to the function.

name: string

The name of the function.

output: string

The output of the function. This will be null if the outputs have not been submitted yet.

type: "function"

The type of tool call. This is always going to be function for this type of tool call.

FunctionToolCallDelta object { index, type, id, function }

index: number

The index of the tool call in the tool calls array.

type: "function"

The type of tool call. This is always going to be function for this type of tool call.

id: optional string

The ID of the tool call object.

function: optional object { arguments, name, output }

The definition of the function that was called.

arguments: optional string

The arguments passed to the function.

name: optional string

The name of the function.

output: optional string

The output of the function. This will be null if the outputs have not been submitted yet.

MessageCreationStepDetails object { message_creation, type }

Details of the message creation by the run step.

message_creation: object { message_id }

message_id: string

The ID of the message that was created by this run step.

type: "message_creation"

Always message_creation.

RunStep object { id, assistant_id, cancelled_at, 13 more }

Represents a step in execution of a run.

id: string

The identifier of the run step, which can be referenced in API endpoints.

assistant_id: string

The ID of the assistant associated with the run step.

cancelled_at: number

The Unix timestamp (in seconds) for when the run step was cancelled.

completed_at: number

The Unix timestamp (in seconds) for when the run step completed.

created_at: number

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

expired_at: number

The Unix timestamp (in seconds) for when the run step expired. A step is considered expired if the parent run is expired.

failed_at: number

The Unix timestamp (in seconds) for when the run step failed.

last_error: object { code, message }

The last error associated with this run step. Will be null if there are no errors.

code: "server_error" or "rate_limit_exceeded"

One of server_error or rate_limit_exceeded.

One of the following:

"server_error"

"rate_limit_exceeded"

message: string

A human-readable description of the error.

metadata: Metadata

Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard.

Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters.

object: "thread.run.step"

The object type, which is always thread.run.step.

run_id: string

The ID of the run that this run step is a part of.

status: "in_progress" or "cancelled" or "failed" or 2 more

The status of the run step, which can be either in_progress, cancelled, failed, completed, or expired.

One of the following:

"in_progress"

"cancelled"

"failed"

"completed"

"expired"

step_details: MessageCreationStepDetails { message_creation, type } or ToolCallsStepDetails { tool_calls, type }

The details of the run step.

One of the following:

MessageCreationStepDetails object { message_creation, type }

Details of the message creation by the run step.

message_creation: object { message_id }

message_id: string

The ID of the message that was created by this run step.

type: "message_creation"

Always message_creation.

ToolCallsStepDetails object { tool_calls, type }

Details of the tool call.

tool_calls: array of CodeInterpreterToolCall { id, code_interpreter, type } or FileSearchToolCall { id, file_search, type } or FunctionToolCall { id, function, type }

An array of tool calls the run step was involved in. These can be associated with one of three types of tools: code_interpreter, file_search, or function.

One of the following:

CodeInterpreterToolCall object { id, code_interpreter, type }

Details of the Code Interpreter tool call the run step was involved in.

id: string

The ID of the tool call.

code_interpreter: object { input, outputs }

The Code Interpreter tool call definition.

input: string

The input to the Code Interpreter tool call.

outputs: array of object { logs, type } or object { image, type }

The outputs from the Code Interpreter tool call. Code Interpreter can output one or more items, including text (logs) or images (image). Each of these are represented by a different object type.

One of the following:

CodeInterpreterLogOutput object { logs, type }

Text output from the Code Interpreter tool call as part of a run step.

logs: string

The text output from the Code Interpreter tool call.

type: "logs"

Always logs.

CodeInterpreterImageOutput object { image, type }

image: object { file_id }

file_id: string

The file ID of the image.

type: "image"

Always image.

type: "code_interpreter"

The type of tool call. This is always going to be code_interpreter for this type of tool call.

FileSearchToolCall object { id, file_search, type }

id: string

The ID of the tool call object.

file_search: object { ranking_options, results }

For now, this is always going to be an empty object.

ranking_options: optional object { ranker, score_threshold }

The ranking options for the file search.

ranker: "auto" or "default_2024_08_21"

The ranker to use for the file search. If not specified will use the auto ranker.

One of the following:

"auto"

"default_2024_08_21"

score_threshold: number

The score threshold for the file search. All values must be a floating point number between 0 and 1.

minimum0

maximum1

results: optional array of object { file_id, file_name, score, content }

The results of the file search.

file_id: string

The ID of the file that result was found in.

file_name: string

The name of the file that result was found in.

score: number

The score of the result. All values must be a floating point number between 0 and 1.

minimum0

maximum1

content: optional array of object { text, type }

The content of the result that was found. The content is only included if requested via the include query parameter.

text: optional string

The text content of the file.

type: optional "text"

The type of the content.

type: "file_search"

The type of tool call. This is always going to be file_search for this type of tool call.

FunctionToolCall object { id, function, type }

id: string

The ID of the tool call object.

function: object { arguments, name, output }

The definition of the function that was called.

arguments: string

The arguments passed to the function.

name: string

The name of the function.

output: string

The output of the function. This will be null if the outputs have not been submitted yet.

type: "function"

The type of tool call. This is always going to be function for this type of tool call.

type: "tool_calls"

Always tool_calls.

thread_id: string

The ID of the thread that was run.

type: "message_creation" or "tool_calls"

The type of run step, which can be either message_creation or tool_calls.

One of the following:

"message_creation"

"tool_calls"

usage: object { completion_tokens, prompt_tokens, total_tokens }

Usage statistics related to the run step. This value will be null while the run step’s status is in_progress.

completion_tokens: number

Number of completion tokens used over the course of the run step.

prompt_tokens: number

Number of prompt tokens used over the course of the run step.

total_tokens: number

Total number of tokens used (prompt + completion).

RunStepDeltaEvent object { id, delta, object }

Represents a run step delta i.e. any changed fields on a run step during streaming.

id: string

The identifier of the run step, which can be referenced in API endpoints.

delta: object { step_details }

The delta containing the fields that have changed on the run step.

step_details: optional RunStepDeltaMessageDelta { type, message_creation } or ToolCallDeltaObject { type, tool_calls }

The details of the run step.

One of the following:

RunStepDeltaMessageDelta object { type, message_creation }

Details of the message creation by the run step.

type: "message_creation"

Always message_creation.

message_creation: optional object { message_id }

message_id: optional string

The ID of the message that was created by this run step.

ToolCallDeltaObject object { type, tool_calls }

Details of the tool call.

type: "tool_calls"

Always tool_calls.

tool_calls: optional array of CodeInterpreterToolCallDelta { index, type, id, code_interpreter } or FileSearchToolCallDelta { file_search, index, type, id } or FunctionToolCallDelta { index, type, id, function }

An array of tool calls the run step was involved in. These can be associated with one of three types of tools: code_interpreter, file_search, or function.

One of the following:

CodeInterpreterToolCallDelta object { index, type, id, code_interpreter }

Details of the Code Interpreter tool call the run step was involved in.

index: number

The index of the tool call in the tool calls array.

type: "code_interpreter"

The type of tool call. This is always going to be code_interpreter for this type of tool call.

id: optional string

The ID of the tool call.

code_interpreter: optional object { input, outputs }

The Code Interpreter tool call definition.

input: optional string

The input to the Code Interpreter tool call.

outputs: optional array of CodeInterpreterLogs { index, type, logs } or CodeInterpreterOutputImage { index, type, image }

The outputs from the Code Interpreter tool call. Code Interpreter can output one or more items, including text (logs) or images (image). Each of these are represented by a different object type.

One of the following:

CodeInterpreterLogs object { index, type, logs }

Text output from the Code Interpreter tool call as part of a run step.

index: number

The index of the output in the outputs array.

type: "logs"

Always logs.

logs: optional string

The text output from the Code Interpreter tool call.

CodeInterpreterOutputImage object { index, type, image }

index: number

The index of the output in the outputs array.

type: "image"

Always image.

image: optional object { file_id }

file_id: optional string

The file ID of the image.

FileSearchToolCallDelta object { file_search, index, type, id }

file_search: unknown

For now, this is always going to be an empty object.

index: number

The index of the tool call in the tool calls array.

type: "file_search"

The type of tool call. This is always going to be file_search for this type of tool call.

id: optional string

The ID of the tool call object.

FunctionToolCallDelta object { index, type, id, function }

index: number

The index of the tool call in the tool calls array.

type: "function"

The type of tool call. This is always going to be function for this type of tool call.

id: optional string

The ID of the tool call object.

function: optional object { arguments, name, output }

The definition of the function that was called.

arguments: optional string

The arguments passed to the function.

name: optional string

The name of the function.

output: optional string

The output of the function. This will be null if the outputs have not been submitted yet.

object: "thread.run.step.delta"

The object type, which is always thread.run.step.delta.

RunStepDeltaMessageDelta object { type, message_creation }

Details of the message creation by the run step.

type: "message_creation"

Always message_creation.

message_creation: optional object { message_id }

message_id: optional string

The ID of the message that was created by this run step.

RunStepInclude = "step_details.tool_calls[*].file_search.results[*].content"

ToolCallDeltaObject object { type, tool_calls }

Details of the tool call.

type: "tool_calls"

Always tool_calls.

tool_calls: optional array of CodeInterpreterToolCallDelta { index, type, id, code_interpreter } or FileSearchToolCallDelta { file_search, index, type, id } or FunctionToolCallDelta { index, type, id, function }

An array of tool calls the run step was involved in. These can be associated with one of three types of tools: code_interpreter, file_search, or function.

One of the following:

CodeInterpreterToolCallDelta object { index, type, id, code_interpreter }

Details of the Code Interpreter tool call the run step was involved in.

index: number

The index of the tool call in the tool calls array.

type: "code_interpreter"

The type of tool call. This is always going to be code_interpreter for this type of tool call.

id: optional string

The ID of the tool call.

code_interpreter: optional object { input, outputs }

The Code Interpreter tool call definition.

input: optional string

The input to the Code Interpreter tool call.

outputs: optional array of CodeInterpreterLogs { index, type, logs } or CodeInterpreterOutputImage { index, type, image }

The outputs from the Code Interpreter tool call. Code Interpreter can output one or more items, including text (logs) or images (image). Each of these are represented by a different object type.

One of the following:

CodeInterpreterLogs object { index, type, logs }

Text output from the Code Interpreter tool call as part of a run step.

index: number

The index of the output in the outputs array.

type: "logs"

Always logs.

logs: optional string

The text output from the Code Interpreter tool call.

CodeInterpreterOutputImage object { index, type, image }

index: number

The index of the output in the outputs array.

type: "image"

Always image.

image: optional object { file_id }

file_id: optional string

The file ID of the image.

FileSearchToolCallDelta object { file_search, index, type, id }

file_search: unknown

For now, this is always going to be an empty object.

index: number

The index of the tool call in the tool calls array.

type: "file_search"

The type of tool call. This is always going to be file_search for this type of tool call.

id: optional string

The ID of the tool call object.

FunctionToolCallDelta object { index, type, id, function }

index: number

The index of the tool call in the tool calls array.

type: "function"

The type of tool call. This is always going to be function for this type of tool call.

id: optional string

The ID of the tool call object.

function: optional object { arguments, name, output }

The definition of the function that was called.

arguments: optional string

The arguments passed to the function.

name: optional string

The name of the function.

output: optional string

The output of the function. This will be null if the outputs have not been submitted yet.

ToolCallsStepDetails object { tool_calls, type }

Details of the tool call.

tool_calls: array of CodeInterpreterToolCall { id, code_interpreter, type } or FileSearchToolCall { id, file_search, type } or FunctionToolCall { id, function, type }

An array of tool calls the run step was involved in. These can be associated with one of three types of tools: code_interpreter, file_search, or function.

One of the following:

CodeInterpreterToolCall object { id, code_interpreter, type }

Details of the Code Interpreter tool call the run step was involved in.

id: string

The ID of the tool call.

code_interpreter: object { input, outputs }

The Code Interpreter tool call definition.

input: string

The input to the Code Interpreter tool call.

outputs: array of object { logs, type } or object { image, type }

The outputs from the Code Interpreter tool call. Code Interpreter can output one or more items, including text (logs) or images (image). Each of these are represented by a different object type.

One of the following:

CodeInterpreterLogOutput object { logs, type }

Text output from the Code Interpreter tool call as part of a run step.

logs: string

The text output from the Code Interpreter tool call.

type: "logs"

Always logs.

CodeInterpreterImageOutput object { image, type }

image: object { file_id }

file_id: string

The file ID of the image.

type: "image"

Always image.

type: "code_interpreter"

The type of tool call. This is always going to be code_interpreter for this type of tool call.

FileSearchToolCall object { id, file_search, type }

id: string

The ID of the tool call object.

file_search: object { ranking_options, results }

For now, this is always going to be an empty object.

ranking_options: optional object { ranker, score_threshold }

The ranking options for the file search.

ranker: "auto" or "default_2024_08_21"

The ranker to use for the file search. If not specified will use the auto ranker.

One of the following:

"auto"

"default_2024_08_21"

score_threshold: number

The score threshold for the file search. All values must be a floating point number between 0 and 1.

minimum0

maximum1

results: optional array of object { file_id, file_name, score, content }

The results of the file search.

file_id: string

The ID of the file that result was found in.

file_name: string

The name of the file that result was found in.

score: number

The score of the result. All values must be a floating point number between 0 and 1.

minimum0

maximum1

content: optional array of object { text, type }

The content of the result that was found. The content is only included if requested via the include query parameter.

text: optional string

The text content of the file.

type: optional "text"

The type of the content.

type: "file_search"

The type of tool call. This is always going to be file_search for this type of tool call.

FunctionToolCall object { id, function, type }

id: string

The ID of the tool call object.

function: object { arguments, name, output }

The definition of the function that was called.

arguments: string

The arguments passed to the function.

name: string

The name of the function.

output: string

The output of the function. This will be null if the outputs have not been submitted yet.

type: "function"

The type of tool call. This is always going to be function for this type of tool call.

type: "tool_calls"

Always tool_calls.