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Specs

Model IDgoogle/gemini-3.8-flash
Context window1M tokens
Max output66K tokens
Input price$0.83 / 1M tokens
Output price$4.13 / 1M tokens
Inputs → outputsText, Image, Video, File, Audio → Text
Open weightsNo

How to use Gemini 3.8 Flash in your app

The quickest way is through an API gateway such as OpenRouter, which uses the same format as the OpenAI API. Create a key, then send a request with the model ID google/gemini-3.8-flash:

curl https://openrouter.ai/api/v1/chat/completions \ -H "Authorization: Bearer $OPENROUTER_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "google/gemini-3.8-flash", "messages": [{"role": "user", "content": "Explain this in simple words..."}] }'

Prefer no code? Many tools in our AI tools directory run on models like this one.

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Questions about Gemini 3.8 Flash

What is Gemini 3.8 Flash?

Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

How big is the context window of Gemini 3.8 Flash?

Gemini 3.8 Flash can read up to 1,048,576 tokens in one request, roughly 786,432 words.

How much does Gemini 3.8 Flash cost?

Through OpenRouter, Gemini 3.8 Flash costs about $0.83 / 1M tokens for input and $4.13 / 1M tokens for output. Prices change, so check before large jobs.

Is Gemini 3.8 Flash open source?

Gemini 3.8 Flash does not have downloadable weights. You use it through Google or an API provider.

What can Gemini 3.8 Flash take as input?

Gemini 3.8 Flash accepts text, image, video, file, audio and produces text.

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Specs and prices come from OpenRouter and the provider, and are refreshed daily. Last checked 2 Sep 2026.

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