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Gemini 3.5 FlashAPI
Gemini 3.5 Flash (Google): live API pricing, context window and the best open-source alternatives, tracked daily by OpenSourceAI.tech.
Prices update automatically — checked hourly against provider list prices.
Benchmarks & performance
Independent benchmark scores for Gemini 3.5 Flash, measured by Artificial Analysis. Higher is better. Measurement mode: high.
About this model
Gemini 3.5 Flash is a commercial AI model by Google. The specifications below are tracked automatically: pricing is refreshed hourly from public list prices, so the numbers on this page reflect the current cost of using the model through its API.
Frequently asked questions
What is Gemini 3.5 Flash?
Gemini 3.5 Flash is an AI language model from Google. It is a proprietary model, available through an API. It scores 50.2 on the Artificial Analysis intelligence index.
Is Gemini 3.5 Flash free?
Gemini 3.5 Flash is not free: it costs $1.5 per million input tokens and $9 per million output tokens. Open-weight alternatives can be self-hosted at no per-token cost.
What is Gemini 3.5 Flash good at?
Independent benchmarks from Artificial Analysis give it GPQA 92.2%, Humanity's Last Exam 41%, Long Context Reasoning 69.3%, SciCode 53.1%, IFBench 76.3%, τ²-Bench 95.3%, τ-Bench Banking 25.4%, Terminal-Bench 78.7%, Terminal-Bench Hard 40.9%. It is particularly used for code generation.
How fast is Gemini 3.5 Flash?
It generates about 253.5 tokens per second, with a median 15.52s delay before the first token. Measured independently by Artificial Analysis.
Open-source alternatives
Depending on your workload, an open-weight model that you can self-host may cut costs dramatically or remove per-token pricing entirely. Our comparison pages put this model side by side with the strongest open-source contenders.