GoogleGemini 3
Gemini 3.8 Flash
Gemini 3.8 Flash is the stable September 2026 Flash API. It accepts text, images, video, audio and PDFs and returns text.
What the release provides
The model supports thinking at low, medium and high levels. A minimal thinking setting returns an error. Its tools include code execution, computer use, search and structured output.Gemini 3.8 Flash official API documentation
How to use it well
Practical guidance. When moving an older Flash workflow, inspect the actual thinking parameter before sending requests. Measure complete task time, including retries and tool work. Keep source files and questions fixed while comparing response quality.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API |
| Model identifiers | gemini-3.8-flash |
| Context window | 1,048,576 tokens API input limit; reserve output capacity where the service shares one window. Gemini 3.8 Flash official API documentation |
| Maximum output | 65,536 tokens Published API output limit; request settings can be lower. Gemini 3.8 Flash official API documentation |