The Gemini-3-pro-image-preview API keep getting 503 errors for hours

I wanna whats going on…I have been suffered from this the whole night

Same thing. Thank god I am not the only one - I thought my account got blocked or something.

Hi @bicstain_may @alex_b1,

Welcome to the Forum,

A 503 error (UNAVAILABLE) indicates that the service is temporarily overloaded or experiencing a capacity constraint. This is common during peak usage hours, particularly with long context requests.

The best immediate step is to wait a few minutes and try again . If you’re using code, implementing a retry with exponential backoff is the most robust way to handle this.

Thank you!

Same here, even with retries with exponential backoff. I’m not able to get even 10 images a day
How does long context affect the 503 response?
I’m using long text prompts with reference images as prompts - how to handle this? Is there a higher payed tier where it works?

It’s been denying my requests for 4 days straight now. No matter what time of the day I try

Hi @Martin_Woska, @alex_b1,

Long context and reference images make requests computationally heavier.'During periods of high congestion, the server is more likely to drop these heavy requests (returning a 503) compared to short, simple text prompts.

However, it was a temporary problem because of too much traffic and should have been fixed now.

Could you please confirm if you are still facing these issues?

Thank you!