{"slug": "get-15-rpm-500-rpd-for-free-google-gemini-3-1-flash-lite-api-guide-translation", "title": "Get 15 RPM / 500 RPD for Free! Google Gemini 3.1 Flash-Lite API Guide & Translation Setup", "summary": "Google has introduced a generous free tier for the Gemini 3.1 Flash-Lite preview API, offering 15 requests per minute and 500 requests per day. Developers can obtain a free API key and configure it for tasks such as local translation and text polishing using specific system prompts.", "body_md": "Google has quietly configured an ultra-generous 15 RPM / 500 RPD free tier for the Gemini 3.1 Flash-Lite preview API. In this guide, we show how to get your free API Key and configure it for local translation and polishing.\n\nFor natural translation:\n\n\"You are a professional translator fluent in English and Chinese. Translate the input text naturally and colloquially. Retain technical terms, formatting, and markdown links as they are. Avoid literal translations; deliver only the translated text.\"\n\nFor text polishing:\n\n\"You are an expert English copywriter and proofreader. Polish and rewrite the user's input text to sound professional, academic, and engaging. Correct grammar, syntax, and word choices while keeping the original intent.\"", "url": "https://wpnews.pro/news/get-15-rpm-500-rpd-for-free-google-gemini-3-1-flash-lite-api-guide-translation", "canonical_source": "https://dev.to/deniseamsen/get-15-rpm-500-rpd-for-free-google-gemini-31-flash-lite-api-guide-translation-setup-5614", "published_at": "2026-06-30 04:39:14+00:00", "updated_at": "2026-06-30 04:48:53.492671+00:00", "lang": "en", "topics": ["large-language-models", "developer-tools", "natural-language-processing"], "entities": ["Google", "Gemini 3.1 Flash-Lite"], "alternates": {"html": "https://wpnews.pro/news/get-15-rpm-500-rpd-for-free-google-gemini-3-1-flash-lite-api-guide-translation", "markdown": "https://wpnews.pro/news/get-15-rpm-500-rpd-for-free-google-gemini-3-1-flash-lite-api-guide-translation.md", "text": "https://wpnews.pro/news/get-15-rpm-500-rpd-for-free-google-gemini-3-1-flash-lite-api-guide-translation.txt", "jsonld": "https://wpnews.pro/news/get-15-rpm-500-rpd-for-free-google-gemini-3-1-flash-lite-api-guide-translation.jsonld"}}