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POST
veo3 (Text To Video)

Authentication

  1. Sign up for a GPTProto account at https://gptproto.com
  2. Navigate to the API Keys section in your dashboard
  3. Generate a new API key (sk-xxxxx)
  4. Copy and securely store your API key For authentication details, please refer to the Authentication section.

Initiate Request

Query Result

If the request that generated your content includes the parameter enable_sync_mode set to true (some models do not support this parameter, but you still need to query the result by id), you must call the Query Result endpoint to retrieve the final output.
After submitting your prediction request, the response will contain the id you need.
You can find it in either:
  • data.id – the unique identifier of the prediction
  • data.urls[0].get – a ready-to-use GET URL that already embeds the id

Parameters

Path Parameters

Endpoint: https://gptproto.com/api/v3/google/{model}/{scene}
Body parameters may vary depending on the scene. Incorrect scene selection may cause parameters to fail. Please choose the appropriate scene based on your actual needs.

Core Parameters

Advanced Parameters

Model Comparison

Notes:
  • Fast models (veo3-fast, veo3.1-fast): Optimized for speed with lower latency, suitable for high-volume generation tasks.
  • Pro models (veo3-pro, veo3.1-pro): Higher quality output with enhanced detail and coherence. Does not support reference-to-video.
  • 1080p / 4k resolution: Only available with 8-second duration.
  • Video retention: Generated videos are stored on the server for 2 days, after which they are removed.
  • Watermarking: Videos are watermarked using Google SynthID.

Error Codes

Common Error Codes