Gemini 1.5 Flash is Google's fast multimodal model line. Search demand still includes Gemini 1.5 Flash, but for new projects you should also compare Gemini 2.5 Flash and Gemini 2.5 Flash Lite.
Why choose it?
- Fast multimodal responses: useful for text, image understanding, summaries, and extraction.
- Google ecosystem: Google AI Studio makes browser-based API key setup straightforward.
- Good migration target: the page helps users decide whether to stay on 1.5 Flash or move to newer Gemini Flash models.
Free access options
- Google AI Studio: recurring free-tier quota for Gemini API experiments.
- Vercel AI Gateway: monthly gateway credits for Gemini models.
If your query is specifically for "Gemini 1.5 Flash API key free", start with Google AI Studio. If you want one gateway for several providers, compare the Vercel endpoint.