Google AI Studio - Free Gemini API Development & Testing
Build AI applications with Google's latest Gemini models in AI Studio. Free tier for development, pay-as-you-go for production. Test prompts, manage API keys.
Google AI Studio is a free, browser-based development environment for building and testing applications with Google's Gemini generative AI models. It provides free access to Gemini models for development and prototyping, with optional paid tiers for production deployment. The platform supports multimodal input (text, images, audio, video) and offers context windows up to 1 million tokens. Pricing ranges from free for development to $0.1-$2.5 per 1M input tokens depending on model selection. Available globally through Google Cloud.
Pricing
Free tier with rate limits for development. Paid tiers start at $0 with pay-as-you-go: Gemini 3 Pro/2.5 Pro at $1.25-$2.50/1M input tokens, $10-$15/1M output tokens. Gemini 2.5 Flash at $0.30/1M input, $2.50/1M output. Gemini 2.0 Flash at $0.15/1M input, $0.60/1M output. Gemini 3.1 Flash-Lite at $0.10/1M input, $0.40/1M output. Context caching reduces input token costs by 75%.
Frequently Asked Questions
Is Google AI Studio free to use?
Yes, Google AI Studio is completely free to use for development and testing. You can create and manage API keys without a credit card. However, once you link a paid API key for production use, you'll be charged based on token consumption. The free tier includes access to Gemini 2.5 Flash, Gemini 2.0 Flash, and Gemini 3 Flash with rate limits.
What is the difference between Gemini 3 Pro and Gemini 2.5 Pro?
Gemini 3 Pro is Google's latest and most intelligent model, achieving state-of-the-art performance on reasoning benchmarks (92.4% MMLU, 37.5% Humanity's Last Exam). Gemini 2.5 Pro topped leaderboards for 6+ months with strong reasoning, coding, and math performance (92.0% AIME 2024, 84.0% GPQA Diamond). Gemini 3 Pro shows significant improvements in abstract reasoning (31.1% ARC-AGI-2 vs 4.9%) and visual understanding (87.6% Video-MMMU). Both support 1M token context, but Gemini 3 is more expensive.
How much does the Gemini API cost?
Pricing varies by model: Gemini 3.1 Flash-Lite costs $0.10/1M input tokens and $0.40/1M output tokens (cheapest). Gemini 2.5 Flash: $0.30/$2.50. Gemini 2.5 Pro: $1.25/$10.00. Gemini 3 Pro: $2.50/$15.00 (highest cost for most advanced model). Context caching reduces input token costs by 75% for large repeated prompts. Free tier available for development with rate limits.
What is the context window size for Gemini models?
All modern Gemini models (3, 3.1, 2.5, and 2.0 Flash) support a 1 million token context window by default. This allows processing entire codebases, lengthy documents, hours of video, and complex multimodal inputs in a single request. Gemini 2.5 Pro has plans to expand to 2 million tokens in the future.
Can I use Google AI Studio for production applications?
Yes, Google AI Studio can be used for production. You link a paid API key through your Google Cloud project to upgrade from free tier to Tier 1, 2, or 3 based on spending. For large-scale deployments with custom security and compliance needs, Google recommends using Vertex AI instead, which offers data residency controls, HIPAA eligibility, and enterprise features.
Does Gemini support multimodal input?
Yes, all Gemini models natively support multimodal input. You can process text, images, audio, and video simultaneously in the same request. This is built into the model architecture from the ground up, not added as a separate feature. Gemini 3 Flash achieves 87.6% on Video-MMMU and 81.2% on MMMU-Pro, demonstrating strong multimodal understanding.
What models are available in Google AI Studio?
Available models include: Gemini 3 Pro and Flash (latest, most capable), Gemini 2.5 Pro and Flash (proven reasoning models), Gemini 2.0 Flash-Lite (budget option), Gemini 1.5 Pro (deprecated April 2025), and preview models like Gemini 3.1 Pro Flash-Lite. Free tier includes Gemini 2.5 Flash, 2.0 Flash, and 3 Flash with rate limits. Check the models page for the latest availability.