Gemini API fine-tuning disabled?

Hi everyone! Has the Gemini API fine-tuning option been disabled? I was trying implement a tuning via python and it seems that there are no available models anymore and the remaining option is VertexAI based, whose billing system seems scary as I have read in other posts… Will this option be back? Thanks in advance!

Hi @Cristobal,

Welcome to the Forum,

Fine-tuning through the Gemini API is currently unavailable because the Gemini 1.5 Flash-001 model, which was the last model to support API based tuning was deprecated in May 2025. Currently, no models are available for direct fine-tuning via the Gemini API, although this functionality remains supported in Vertex AI.

Thank you!

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