Kling AI: job signals
What Kling AI documents about how a finished job is signalled, by webhook or polling: a callback URL notified when a task's status changes, with signed requests. From 1 source page, read 2026-09-25; no maker pays to be listed.
the server will actively notify you when the task status changes
Kling AI, API documentation: callback protocol
- Callback protocolA callback URL notified when a task's status changes, with signed requests
1Tools with the same reading
BytePlus ModelArk, Colossyan, Descript, fal, Flixly, HeyGen, Higgsfield, Krea, Luma, OpenAI Sora, PixVerse, Replicate, Revid, Synthesia and VEED also document “a webhook or callback URL”, which makes 16 tools with this reading.
It reflects the documentation on the reading day.
2Why it matters in a pipeline
Video jobs take minutes, so the signal decides how a pipeline waits. A webhook calls back when the file is ready; polling asks again and again, which is simpler to set up and wasteful at volume.
| Tool | Documented as |
|---|---|
| Adobe Firefly | A status polled until done |
| BytePlus ModelArk | A webhook or callback URL |
| Colossyan | A webhook or callback URL |
| D-ID | A status polled until done |
| Descript | A webhook or callback URL |
| fal | A webhook or callback URL |
| Flixly | A webhook or callback URL |
| Google Veo | A status polled until done |
| HeyGen | A webhook or callback URL |
| Higgsfield | A webhook or callback URL |
| invideo | Not documented in the docs read |
| Kapwing | Not documented in the docs read |
| Kling AI | A webhook or callback URL |
| Krea | A webhook or callback URL |
| LTX | A status polled until done |
| Luma | A webhook or callback URL |
| MiniMax | A status polled until done |
| OpenAI Sora | A webhook or callback URL |
| Pika | Not documented in the docs read |
| PixVerse | A webhook or callback URL |
| Replicate | A webhook or callback URL |
| Revid | A webhook or callback URL |
| Runway | A status polled until done |
| SceneMixer | Not documented in the docs read |
| Synthesia | A webhook or callback URL |
| VEED | A webhook or callback URL |
| Vidu | Not documented in the docs read |
| Wan (Alibaba Cloud) | A status polled until done |
Inclusion rule. Every tool in the register, with or without its own page on this hook. Order. Alphabetical by tool name.