I’m facing an issue with an existing fine-tuned model based on Gemini 2.0 Flash. I am not trying to create or tune a new model — this is a model that was already fine-tuned earlier.
The problem is:
When I try to call this fine-tuned model via the API, I get a 404 Not Found error.
Google Cloud Billing Support informed me that Gemini 2.0 Flash has been deprecated, but I want to know whether:
Fine-tuned models based on Gemini 2.0 Flash have also been removed, or
There is still any way to access, retrieve, or migrate these existing models.
If anyone from the community or Google team has clarity on:
Whether fine-tuned Gemini 2.0 Flash models are permanently deleted,
Or if there is a migration path / workaround to recover or use them,
Thanks for reaching out to us. Could you please share the exact error message with a screenshot so that we can assist you further. Additionally, you can try another supported model like gemini-2.5-flash.
Gemini 2.0 Flash is supposed to be discontinued in Earliest February 2026. Different models of the same family may have different lifecycles like the Live API model, gemini-2.0-flash-live-001, which was scheduled for deprecation on December 09, 2025. Additionally, the image generation model, gemini-2.0-flash-preview-image-generation, has regional restrictions.
If i wish to fine-tune a gemini 2.5 flash is there a way i can use my previous fine tuned model weights from 2.0 and take that as base while re-tuning on 2.5 flash.
You cannot use fine tuned model weights from 2.0 directly and take that as base while re-tuning on 2.5 flash as they might have incompatible architecture. If you choose to use supervised fine-tuning, you cannot move your existing tuned model from older Gemini versions. You need to run a new tuning job for the new Gemini version.