I am currently using the Gemini 2.5 Pro API on a paid basis. Since it is still pre-release, only a few test users are using it, but I frequently encounter {“code”:503,“message”:“The model is overloaded. Please try again later.”,‘status’:"UNAVAILABLE”} Reviewing Sentry logs shows this error occurr…

[image] It may serve as a temporary solution, but checking the error logs reveals that the user attempted multiple times over several hours without success. This does not appear to be an issue that can be resolved simply by retrying. Anyway, I’ll try adding a retry feature. Thank you.

Why it Works :gear: Exponential back-off is a crucial part of this strategy. Instead of retrying immediately, it waits for a short period before the next attempt, and this waiting period increases exponentially with each failed attempt. This prevents your code from overwhelming the API with repeate…

Thanks this actually is a smart approach and integrated it - hopefully it works but its not easy to integrate in intermediary software if API calls are done through middleman (AI orchestration solution like e.g. flowise or n8n or other like this) - as such it should probably be handled at API provid…

I'm paid, but 503 Error: The model is overloaded. Please try again later

Gemini API

Krish_Varnakavi1 September 19, 2025, 8:58pm 3

Hi @PangMoo,

Welcome to the Google AI Forum!

If you are building an application, do implement retry with exponential-backoff.

Attaching my previous post for reference.

Topic		Replies	Views
Every day 503 errors with msg model is overloaded Gemini API api , model	5	480	August 23, 2025
Gemini 2.5 Pro: The model is overloaded. Please try again later Gemini API model , gemini_25_pro	17	2830	November 17, 2025
Model is overloaded - Gemini API model	57	8278	April 7, 2026
Frequent 503 "The model is overloaded" errors on Gemini 2.5 Flash Gemini API model , gemini-flash-2-5	20	2950	April 8, 2026
503 unavailable Gemini API bug , api	8	1082	September 27, 2025

I'm paid, but 503 Error: The model is overloaded. Please try again later

Related topics