I found some interesting repos on Github. I don't know if it'll fit your needs, but it looks promising
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Enables support for Google's Gemini AI models on Translator++
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Enables support for any AI Provider that has an API compatible with OpenAI on Translator++, you can use g4f
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Enables support for HuggingFace inference and spaces on Translator++
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An AI translator aggregator tool, with cache in xlsx that can be imported to Translator++