curl -X POST 'https://api.openai.com/v1/responses/resp_677efb5139a88190b512bc3fef8e535d/cancel?beta=true' \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H 'openai-beta: responses_multi_agent=v1'

# POST /responses/{response_id}/cancel?beta=true (OpenAI API)
Base URL: https://api.openai.com/v1
Auth: Authorization; OpenAI API key; required.
Status: Beta.
Last verified: 2026-10-20

> Cancel a response

## Critical Gotchas
* The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.
* Audio transcription uploads use multipart form data rather than a JSON request body.

## cURL
curl -X POST 'https://api.openai.com/v1/responses/resp_677efb5139a88190b512bc3fef8e535d/cancel?beta=true' \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H 'openai-beta: responses_multi_agent=v1'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| response_id | path | string | Yes | The ID of the response to cancel. |

## Response example
{"metadata":{},"top_logprobs":0}

---
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POST

POST /responses/{response_id}/cancel?beta=true — OpenAI API

Beta

OpenAI API key (required); https://api.openai.com/v1

OpenAI API

Cancel a response

Base URL: https://api.openai.com/v1
Auth: Authorization: Bearer <OPENAI_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 169 tokens · Vary: Accept

Critical gotchas

The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.

Audio transcription uploads use multipart form data rather than a JSON request body.

cURL

curl -X POST 'https://api.openai.com/v1/responses/resp_677efb5139a88190b512bc3fef8e535d/cancel?beta=true' \  -H "Authorization: Bearer $OPENAI_API_KEY" \  -H 'openai-beta: responses_multi_agent=v1'

Parameters

Name	In	Type	Required	Description
response_id	path	string	Yes	The ID of the response to cancel.

Response 200 OK

{
  "metadata": {},
  "top_logprobs": 0,
  "temperature": 1,
  "top_p": 1,
  "user": "user-1234",
  "safety_identifier": "safety-identifier-1234",
  "prompt_cache_key": "prompt-cache-key-1234",
  "prompt_cache_retention": "in_memory",
  "previous_response_id": "string",
  "model": "gpt-6-astra",
  "background": false,
  "max_tool_calls": 0,
  "text": {
    "format": {
      "type": "text"
    },
    "verbosity": "medium"
  },
  "tools": [
    {
      "type": "function",
      "name": "string",
      "async": true,
      "description": "string",
      "parameters": {},
      "output_schema": {},
      "strict": true,
      "defer_loading": true,
      "allowed_callers": [
        "direct"
      ]
    }
  ],
  "tool_choice": "none",
  "prompt": {
    "id": "string",
    "version": "string",
    "variables": {}
  },
  "service_tier": "auto",
  "truncation": "disabled",
  "id": "string",
  "object": "response",
  "status": "completed",
  "access_programs": {
    "cyber": "standard"
  },
  "created_at": 0,
  "completed_at": 0,
  "error": {
    "type": "string",
    "param": "string",
    "code": "server_error",
    "message": "string",
    "misalignment": {
      "review_target": "string",
      "error_type": "string",
      "detailed_explanation": "string",
      "steer": {
        "message": "string"
      }
    }
  },
  "incomplete_details": {
    "reason": "max_output_tokens"
  },
  "output": [
    {
      "agent": {
        "agent_name": "string"
      },
      "id": "string",
      "type": "message",
      "role": "assistant",
      "content": [
        {
          "type": "output_text",
          "text": "string",
          "annotations": [
            "[recursive or deeply nested schema]"
          ],
          "logprobs": [
            "[recursive or deeply nested schema]"
          ]
        }
      ],
      "phase": "commentary",
      "status": "in_progress"
    }
  ],
  "reasoning": {
    "mode": "string",
    "effort": "medium",
    "summary": "auto",
    "context": "auto",
    "generate_summary": "auto"
  },
  "instructions": "string",
  "output_text": "string",
  "usage": {
    "input_tokens": 0,
    "input_tokens_details": {
      "cached_tokens": 0,
      "cache_write_tokens": 0
    },
    "output_tokens": 0,
    "output_tokens_details": {
      "reasoning_tokens": 0
    },
    "total_tokens": 0
  },
  "prompt_cache_options": {
    "ttl": "30m",
    "mode": "implicit",
    "comparison_response_id": "string"
  },
  "prompt_cache_diagnostics": {
    "type": "cache_miss",
    "reason": "model_changed",
    "cache_missed_tokens": 0,
    "comparison_reusable_tokens": 0
  },
  "moderation": {
    "input": {
      "type": "moderation_result",
      "model": "string",
      "flagged": true,
      "categories": {},
      "category_scores": {},
      "category_applied_input_types": {}
    },
    "output": {
      "type": "moderation_result",
      "model": "string",
      "flagged": true,
      "categories": {},
      "category_scores": {},
      "category_applied_input_types": {}
    }
  },
  "parallel_tool_calls": true,
  "conversation": {
    "id": "string"
  },
  "max_output_tokens": 0
}

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