Nemotron 3 Nano Omni

POST/v1/run

Nemotron 3 Nano Omni Audio by NVIDIA - advanced AI model for audio-to-text. Delivers high-quality results with fast inference, suitable for both creative and production workflows.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to nvidia/nemotron-3-nano-omni/audio.

Default: nvidia/nemotron-3-nano-omni/audio

stringpromptrequired

Text prompt to send to the model. English only.

Optional<string>audio

URL of the audio clip to reason about. wav or mp3, max 1 hour.

Optional<number>top_p

Nucleus sampling probability mass.

Range: 0 to 1

Default: 0.95

Optional<number>temperature

Sampling temperature. Lower is more deterministic.

Range: 0 to 2

Default: 0.7

Optional<string>system_prompt

Optional system prompt to steer the model. Reasoning behavior is controlled by the separate `reasoning_mode` field.

Optional<string>reasoning_mode

Whether the model should emit an explicit reasoning trace. `no_think` returns a direct answer; `think` returns chain-of-thought followed by the final answer.

Allowed values: think, no_think

Default: no_think

Optional<integer>max_tokens

Maximum number of tokens to generate.

Range: 1 to 20000

Default: 1024

Response Schema

The submit endpoint returns an accepted generation task. Poll the result endpoint with the returned id for terminal outputs or errors.

Optional<string>error

Error message if the task failed. Empty on success.

stringidrequired

Unique identifier for the generation task.

Optional<string>model

Model ID used for the prediction.

Optional<array>outputs

Array of generated content. Empty when status is not completed.

stringstatusrequired

Status of the task: pending, running, completed, failed, or timeout.

Allowed values: pending, running, completed, failed, timeout

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: audio-to-text

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "nvidia/nemotron-3-nano-omni/audio",
  "prompt": "Summarize the key capabilities of a multimodal agent.",
  "audio": "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/audio_in.mp3"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/run_abc123 \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "run_abc123",
  "model": "nvidia/nemotron-3-nano-omni/audio",
  "status": "running",
  "outputs": []
}