404 NOT_FOUND error when calling generateContent with uploaded video file on gemini-3-pro-preview model

[kazuyaseki]

Note: I suspect this may be a product/backend issue rather than a client library issue, but I'm filing here first to confirm whether there's any SDK-side configuration needed to use Gemini 3 series models.

Environment details

• Programming language: TypeScript / Node.js
• OS: macOS (Sequoir 15.4)
• Language runtime version: Node.js v22.21.0
• Package version: @google/genai 1.34.0

Steps to reproduce

1. Initialize GoogleGenAI with an API key (not Vertex AI):

 import { GoogleGenAI, createUserContent, createPartFromUri } from "@google/genai";
 const ai = new GoogleGenAI({ apiKey: "YOUR_API_KEY" });

2. Call generateContent with a Gemini 3 series model (gemini-3-flash-preview or gemini-3-pro-preview):

 const response = await ai.models.generateContent({
   model: "gemini-3-pro-preview", // or "gemini-3-flash-preview"
   contents: createUserContent([
     createPartFromUri(fileUri, mimeType), // uploaded video file
     "Analyze this video",
   ]),
 });

3. Observe the error:

Error: ApiError: {"error":{"code":404,"message":"Requested entity was not found.","status":"NOT_FOUND"}}

Expected behavior

The API should return a valid response or a more descriptive error message indicating why the model is unavailable.

Actual behavior

A generic 404 NOT_FOUND error is returned.

Additional context

• Using gemini-2.5-flash with the same code works perfectly.
• I reviewed the SDK source code and confirmed that the model name is correctly transformed to models/gemini-3-pro-preview format.
• The request appears to be sent to the correct endpoint: https://generativelanguage.googleapis.com/v1beta/models/gemini-3-pro-preview:generateContent

Questions:

• Is the Gemini 3 series (gemini-3-flash-preview, gemini-3-pro-preview) currently available via the Gemini API (not Vertex AI)?
• Are there any specific configurations, regions, or permissions required to access these preview models?
• If this is a backend availability issue, is there an ETA for general availability via the Gemini API?

[shmishra99]

@kazuyaseki , Some Gemini 3 models are not available in the free tier, those that are available may have limited access. You can check the details here.

[kazuyaseki]

@shmishra99
I'm using API key with paid project.

[shmishra99]

@kazuyaseki, Can you check this link to see your current model limits? Also, let me know if you can see the Gemini 3 model in the model list. Thanks!

[github-actions]

This issue has been marked as stale because it has been open for 7 days with no activity. It will be closed in 2 days if no further activity occurs.

[github-actions]

This issue was closed because it has been inactive for 9 days. Please post a new issue if you need further assistance. Thanks!