Nemotron 3 Nano Omni Image to Text API Docs | fal

Vision reasoning variant of NVIDIA's Nemotron 3 Nano Omni. 30B A3B hybrid Transformer-Mamba MoE - accepts an image plus a prompt and returns text.

nvidia/nemotron-3-nano-omni/vision

Vision reasoning variant of NVIDIA's Nemotron 3 Nano Omni. 30B A3B hybrid Transformer-Mamba MoE - accepts an image plus a prompt and returns text.

Learn more about Nemotron

Inference

Commercial use

Schema

LLMs

Playground API Examples

About

Run Vision

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Install the new package and update your imports — see client setup.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("nvidia/nemotron-3-nano-omni/vision", {
  input: {
    prompt: "Summarize the key capabilities of a multimodal agent.",
    image_url: "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/vision_in.jpg"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In an environment where you cannot set environment variables, you can configure the API key manually on the client.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue#

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("nvidia/nemotron-3-nano-omni/vision", {
  input: {
    prompt: "Summarize the key capabilities of a multimodal agent.",
    image_url: "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/vision_in.jpg"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("nvidia/nemotron-3-nano-omni/vision", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("nvidia/nemotron-3-nano-omni/vision", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string* required

Text prompt to send to the model. English only.

system_prompt string

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

reasoning_mode ReasoningModeEnum

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. Default value: "no_think"

Possible enum values: think, no_think

max_tokens integer

Maximum number of tokens to generate. Default value: 1024

temperature float

Sampling temperature. Lower is more deterministic. Default value: 0.7

top_p float

Nucleus sampling probability mass. Default value: 0.95

enable_safety_checker boolean

Whether to enable the safety checker. Default value: true

image_url string* required

URL of the image to reason about. RGB JPEG or PNG.

{
  "prompt": "Summarize the key capabilities of a multimodal agent.",
  "system_prompt": "You are a concise enterprise assistant.",
  "reasoning_mode": "no_think",
  "max_tokens": 1024,
  "temperature": 0.7,
  "top_p": 0.95,
  "enable_safety_checker": true,
  "image_url": "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/vision_in.jpg"
}

Output#

output string* required

Generated text response.

finish_reason string

Reason generation stopped. Default value: "stop"

usage UsageInfo* required

Token usage for the request.

{
  "output": "The image shows a golden retriever puppy sitting on a wooden floor.",
  "finish_reason": "stop",
  "usage": {
    "output_tokens": 87,
    "input_tokens": 412
  }
}

Other types#

UsageInfo#

input_tokens integer* required

Number of input tokens processed.

output_tokens integer* required

Number of output tokens generated.

Related Models

Loading API documentation…

1. Calling the API

2. Authentication

API Key

3. Queue

4. Files

5. Schema

About

Run Vision

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Install the new package and update your imports — see client setup.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("nvidia/nemotron-3-nano-omni/vision", {
  input: {
    prompt: "Summarize the key capabilities of a multimodal agent.",
    image_url: "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/vision_in.jpg"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In an environment where you cannot set environment variables, you can configure the API key manually on the client.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("nvidia/nemotron-3-nano-omni/vision", {
  input: {
    prompt: "Summarize the key capabilities of a multimodal agent.",
    image_url: "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/vision_in.jpg"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("nvidia/nemotron-3-nano-omni/vision", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("nvidia/nemotron-3-nano-omni/vision", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

prompt string* required

Text prompt to send to the model. English only.

system_prompt string

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

reasoning_mode ReasoningModeEnum

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. Default value: "no_think"

Possible enum values: think, no_think

max_tokens integer

Maximum number of tokens to generate. Default value: 1024

temperature float

Sampling temperature. Lower is more deterministic. Default value: 0.7

top_p float

Nucleus sampling probability mass. Default value: 0.95

enable_safety_checker boolean

Whether to enable the safety checker. Default value: true

image_url string* required

URL of the image to reason about. RGB JPEG or PNG.

{
  "prompt": "Summarize the key capabilities of a multimodal agent.",
  "system_prompt": "You are a concise enterprise assistant.",
  "reasoning_mode": "no_think",
  "max_tokens": 1024,
  "temperature": 0.7,
  "top_p": 0.95,
  "enable_safety_checker": true,
  "image_url": "https://storage.googleapis.com/falserverless/example_inputs/nemotron-3-nano-omni/vision_in.jpg"
}

Output#

output string* required

Generated text response.

finish_reason string

Reason generation stopped. Default value: "stop"

usage UsageInfo* required

Token usage for the request.

{
  "output": "The image shows a golden retriever puppy sitting on a wooden floor.",
  "finish_reason": "stop",
  "usage": {
    "output_tokens": 87,
    "input_tokens": 412
  }
}

Other types#

UsageInfo#

input_tokens integer* required

Number of input tokens processed.

output_tokens integer* required

Number of output tokens generated.

nvidia/nemotron-3-nano-omni/vision

nvidia/nemotron-3-nano-omni/vision

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

UsageInfo#

Related Models

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

UsageInfo#

Related Models