A genuinely free tier, a million-token context, native image generation - Gemini on your own key, with controls the Gemini app hides.
Google gives Gemini a genuinely free tier, a million-token context window, and native image generation. Big-AGI runs all of it on your own key with the controls the Gemini app keeps to itself. Set the thinking level, ground answers in Google Search with a recency window, tune media resolution, or generate images at a chosen aspect ratio and size. No card to begin.
It reaches the newest previews too: Deep Research agents that return long-form reports, and Omni Flash, which turns a prompt into a short video with sound. Then beam Gemini's long-context read against Claude and GPT and keep what they agree on.
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Create an API key at the Google Gemini console.
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Paste it into Big-AGI's model settings.
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Start chatting, or Beam it against other models and fuse the answers.
Add your Google AI Studio key and use Gemini models at Google's own API rates. Big-AGI isn't a reseller: no markup and no intermediary, so Google bills you directly.
The Gemini app is Google's model in Google's box. Big-AGI runs Gemini next to GPT, Claude, Grok, and anything else you've connected, side by side in one conversation, which the Gemini app isn't built to do.
It also surfaces controls the consumer app keeps hidden: Gemini's API lets you set the thinking level and temperature per request, real parameters Google ships, not settings we made up. Your keys stay in your browser instead of your Google account.
Billing shifts from monthly to per-token too. A light user can spend less in a month than a subscription costs, and a heavy user never runs into a usage cap, only a bill for tokens actually used. Beam parallel runs do use more tokens than a single reply, that part isn't free.
Turn on Direct Connection under Google's Advanced settings and the browser calls Google directly, bypassing the Big-AGI server, whenever your key is client-side and Google's API allows it. Your keys stay in your browser. Chats are stored locally first and sync only if you turn it on. The AI Inspector shows the exact request before it goes out: model, parameters, token counts, and a cost estimate.
Beam runs Gemini against GPT, Claude, or any other model you've connected, in parallel, then hands you Fusions: several strategies that combine, cross-check, and synthesize the parallel answers, which beats just picking the best one. Parallel runs use more tokens than a single chat.
Your key, your data, your choice of model. Big-AGI's Open branch is open source and self-hostable, so you can check exactly how Google Gemini is called.
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