Cancels a queued or processing task. The cancel is immediate and final: the task becomes cancelled,
its held credits are released in the same step and a task.cancelled event is sent. A result that finishes
after the cancel is discarded and never charged.
Cancelling an already cancelled task answers 200 again. A completed or failed task answers
409 task_already_terminal.
When the output is removed, 7 days after completion.
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It may change.","isRequired":true,"uniqueKey":"error.message","typeLabel":"string"},"request_id":{"type":"string","description":"Same as the `X-Request-Id` header.","isRequired":true,"uniqueKey":"error.request_id","typeLabel":"string"},"param":{"type":"string","description":"The request field at fault, when there is one.","uniqueKey":"error.param","typeLabel":"string"},"details":{"type":"object","additionalProperties":true,"description":"Extra members for some codes, for example `required` and `available` on `insufficient_credits`.","uniqueKey":"error.details","typeLabel":"object"}},"isRequired":true,"uniqueKey":"error","typeLabel":"object"}},"uniqueKey":"","typeLabel":"object"},"examples":{"insufficient_scope":{"title":"insufficient_scope","value":{"error":{"type":"permission_error","code":"insufficient_scope","message":"this key does not have the video:write scope","request_id":"req_01M5KN14S3T4U5V6W7X8Y9Z0A1"}}},"ip_not_allowed":{"title":"ip_not_allowed","value":{"error":{"type":"permission_error","code":"ip_not_allowed","message":"requests from 203.0.113.9 are not allowed for this key","request_id":"req_01M5KN14T4U5V6W7X8Y9Z0A1B2"}}},"account_not_active":{"title":"account_not_active","value":{"error":{"type":"permission_error","code":"account_not_active","message":"this account is not active yet (pending approval)","request_id":"req_01M5KN14U5V6W7X8Y9Z0A1B2C3"}}}},"exampleType":"examples"}},"exampleType":"examples"},"7d332518-f1f0-40c2-9356-74b5c32c678f":{"description":"Unknown model or task (`model_not_found`, `task_not_found`). A task of another account is also a `404`.","headers":{"X-Request-Id":{"description":"Id of this request (`req_...`). Quote it when you contact support.","schema":{"type":"string","examples":["req_01M5KPY92Y148QP01G532MM3BH"]}}},"content":{"application/json":{"schema":{"type":"object","required":["error"],"properties":{"error":{"type":"object","required":["type","code","message","request_id"],"properties":{"type":{"type":"string","enum":["invalid_request_error","authentication_error","billing_error","permission_error","not_found_error","conflict_error","rate_limit_error","api_error"],"description":"The error category.","isRequired":true,"uniqueKey":"error.type","typeLabel":"enum\u003cstring>"},"code":{"type":"string","description":"Stable machine-readable code. Branch on this, never on `message`.","examples":["insufficient_credits"],"isRequired":true,"uniqueKey":"error.code","typeLabel":"string"},"message":{"type":"string","description":"Human-readable detail. It may change.","isRequired":true,"uniqueKey":"error.message","typeLabel":"string"},"request_id":{"type":"string","description":"Same as the `X-Request-Id` header.","isRequired":true,"uniqueKey":"error.request_id","typeLabel":"string"},"param":{"type":"string","description":"The request field at fault, when there is one.","uniqueKey":"error.param","typeLabel":"string"},"details":{"type":"object","additionalProperties":true,"description":"Extra members for some codes, for example `required` and `available` on `insufficient_credits`.","uniqueKey":"error.details","typeLabel":"object"}},"isRequired":true,"uniqueKey":"error","typeLabel":"object"}},"uniqueKey":"","typeLabel":"object"},"examples":{"task_not_found":{"title":"task_not_found","value":{"error":{"type":"not_found_error","code":"task_not_found","message":"no such task: task_01ZZZZZZZZZZZZZZZZZZZZZZZZ","request_id":"req_01M5KN36WF28NP71BQ6AJ47Q8Y"}}},"model_not_found":{"title":"model_not_found","value":{"error":{"type":"not_found_error","code":"model_not_found","message":"no such model: nobrand/v9/text-to-video","param":"model","request_id":"req_01M5KN36QQXYGKNTNVM7WGQPD0"}}}},"exampleType":"examples"}},"exampleType":"examples"},"8a47ef50-0bec-4663-9159-c633f5c4500a":{"description":"The task is already `completed` or `failed` (`task_already_terminal`), or a request with the same `Idempotency-Key` is still running (`idempotency_in_progress`).","headers":{"X-Request-Id":{"description":"Id of this request (`req_...`). Quote it when you contact support.","schema":{"type":"string","examples":["req_01M5KPY92Y148QP01G532MM3BH"]}}},"content":{"application/json":{"schema":{"type":"object","required":["error"],"properties":{"error":{"type":"object","required":["type","code","message","request_id"],"properties":{"type":{"type":"string","enum":["invalid_request_error","authentication_error","billing_error","permission_error","not_found_error","conflict_error","rate_limit_error","api_error"],"description":"The error category.","isRequired":true,"uniqueKey":"error.type","typeLabel":"enum\u003cstring>"},"code":{"type":"string","description":"Stable machine-readable code. Branch on this, never on `message`.","examples":["insufficient_credits"],"isRequired":true,"uniqueKey":"error.code","typeLabel":"string"},"message":{"type":"string","description":"Human-readable detail. It may change.","isRequired":true,"uniqueKey":"error.message","typeLabel":"string"},"request_id":{"type":"string","description":"Same as the `X-Request-Id` header.","isRequired":true,"uniqueKey":"error.request_id","typeLabel":"string"},"param":{"type":"string","description":"The request field at fault, when there is one.","uniqueKey":"error.param","typeLabel":"string"},"details":{"type":"object","additionalProperties":true,"description":"Extra members for some codes, for example `required` and `available` on `insufficient_credits`.","uniqueKey":"error.details","typeLabel":"object"}},"isRequired":true,"uniqueKey":"error","typeLabel":"object"}},"uniqueKey":"","typeLabel":"object"},"examples":{"task_already_terminal":{"title":"task_already_terminal","value":{"error":{"type":"conflict_error","code":"task_already_terminal","message":"task task_01J9X7Z0K7Q8W3F2P1N6M5V4R3 is already completed","request_id":"req_01M5KN37A1B2C3D4E5F6G7H8J9"}}},"idempotency_in_progress":{"title":"idempotency_in_progress","value":{"error":{"type":"conflict_error","code":"idempotency_in_progress","message":"a request with this Idempotency-Key is still being processed","request_id":"req_01M5KN37B2C3D4E5F6G7H8J9K0"}}}},"exampleType":"examples"}},"exampleType":"examples"},"2c70e849-406f-43e7-bf47-fae98bc8dce4":{"description":"A limit of your plan was reached: the request rate (`rate_limit_exceeded`), the number of queued and\nprocessing tasks (`concurrency_limit_exceeded`) or the daily credit cap (`daily_cap_exceeded`). Wait\n`Retry-After` seconds before retrying.\n","headers":{"Retry-After":{"description":"Seconds to wait before retrying.","schema":{"type":"integer","examples":[10]}},"X-RateLimit-Limit":{"description":"Requests per minute allowed for your account (or the key's lower ceiling).","schema":{"type":"integer","examples":[300]}},"X-RateLimit-Remaining":{"description":"Requests left in the current minute.","schema":{"type":"integer","examples":[287]}},"X-RateLimit-Reset":{"description":"Unix time in seconds when the minute window resets.","schema":{"type":"integer","format":"int64","examples":[1792736640]}},"X-Request-Id":{"description":"Id of this request (`req_...`). Quote it when you contact support.","schema":{"type":"string","examples":["req_01M5KPY92Y148QP01G532MM3BH"]}}},"content":{"application/json":{"schema":{"type":"object","required":["error"],"properties":{"error":{"type":"object","required":["type","code","message","request_id"],"properties":{"type":{"type":"string","enum":["invalid_request_error","authentication_error","billing_error","permission_error","not_found_error","conflict_error","rate_limit_error","api_error"],"description":"The error category.","isRequired":true,"uniqueKey":"error.type","typeLabel":"enum\u003cstring>"},"code":{"type":"string","description":"Stable machine-readable code. Branch on this, never on `message`.","examples":["insufficient_credits"],"isRequired":true,"uniqueKey":"error.code","typeLabel":"string"},"message":{"type":"string","description":"Human-readable detail. It may change.","isRequired":true,"uniqueKey":"error.message","typeLabel":"string"},"request_id":{"type":"string","description":"Same as the `X-Request-Id` header.","isRequired":true,"uniqueKey":"error.request_id","typeLabel":"string"},"param":{"type":"string","description":"The request field at fault, when there is one.","uniqueKey":"error.param","typeLabel":"string"},"details":{"type":"object","additionalProperties":true,"description":"Extra members for some codes, for example `required` and `available` on `insufficient_credits`.","uniqueKey":"error.details","typeLabel":"object"}},"isRequired":true,"uniqueKey":"error","typeLabel":"object"}},"uniqueKey":"","typeLabel":"object"},"examples":{"rate_limit_exceeded":{"title":"rate_limit_exceeded","value":{"error":{"type":"rate_limit_error","code":"rate_limit_exceeded","message":"rate limit exceeded for this account (10 rps, 300 rpm)","request_id":"req_01M5KN37C3D4E5F6G7H8J9K0L1"}}},"concurrency_limit_exceeded":{"title":"concurrency_limit_exceeded","value":{"error":{"type":"rate_limit_error","code":"concurrency_limit_exceeded","message":"the account already has 20 tasks queued or processing (plan limit 20)","request_id":"req_01M5KN37D4E5F6G7H8J9K0L1M2"}}},"daily_cap_exceeded":{"title":"daily_cap_exceeded","value":{"error":{"type":"rate_limit_error","code":"daily_cap_exceeded","message":"this account's daily credit cap (5000) would be exceeded","request_id":"req_01M5KN37E5F6G7H8J9K0L1M2N3"}}}},"exampleType":"examples"}},"exampleType":"examples"}},"security":{"aaefd599-c6ab-4048-ba85-e90f7c4b89c9":{"bearerAuth":{"type":"http","scheme":"bearer","description":"Your API key from the [developer console](https://fiveapi.ai), sent as `Authorization: Bearer sk_live_...`.\nThe `x-api-key: sk_live_...` header is accepted as an alternative.\n","scopes":[],"schemeName":"bearerAuth"}}},"servers":{"eb63f9b9-7090-4399-968a-974bbd0e3388":{"url":"https://api.fiveapi.ai","description":"Production"}},"processedSecurityOptions":[{"schemes":[{"scheme":{"type":"http","scheme":"bearer","description":"Your API key from the [developer console](https://fiveapi.ai), sent as `Authorization: Bearer sk_live_...`.\nThe `x-api-key: sk_live_...` header is accepted as an alternative.\n","scopes":[],"schemeName":"bearerAuth"},"schema":{"title":"Bearer Auth","type":"string","isRequired":true,"description":"Your API key from the [developer console](https://fiveapi.ai), sent as `Authorization: Bearer sk_live_...`.\nThe `x-api-key: sk_live_...` header is accepted as an alternative.\n","format":"bearer","typeLabel":"string\u003cbearer>","deprecated":false},"schemeName":"bearerAuth","name":"Authorization"}],"title":"bearerAuth"}]},"originalFileLocation":"api-reference/openapi.yaml"},"subdomain":"i2v","siteName":"Five API","title":"Cancel a task - Five API","navMaps":{"firstHrefInVersion":{},"firstHrefInLanguage":{}},"lastModified":"2026-10-28T12:09:50.872Z","originalFileLocation":"api-reference/tasks/cancel-task.mdx"},"headHtml":"\u003cscript data-mint-head>(function(){var d=document.documentElement,p=null;if(!p){try{p=localStorage.getItem(\"isDarkMode\")}catch(e){}if(p==='true')p='dark';else if(p==='false')p='light';if(p!=='light'\u0026\u0026p!=='dark'\u0026\u0026p!=='system')p=\"system\"}var r=p==='system'?(matchMedia(\"(prefers-color-scheme: dark)\").matches?'dark':'light'):p;d.classList.remove(r==='dark'?'light':'dark');d.classList.add(r);d.setAttribute(\"data-theme-preference\",p)})();\u003c/script>\u003cmeta data-mint-head name=\"description\" content=\"Cancels a queued or processing task. 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The cancel is immediate and final: the task becomes cancelled, its held credits are released in the same step and a task.cancelled event is sent. A result that finishes after the cancel is discarded and never charged. Cancelling an already cancelled task answers 200 again. A completed or failed task answers 409 task_already_terminal. 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