Gemini 3.8 Flash: API price, context window and how to connect
Gemini 3.8 Flash by Google: $0.825 per million input tokens, $4.125 per million output tokens, a 1.05M-token window. What it is good for, what to compare it with and how to connect it in SKILLOK.
In this article
In short#
The strongest model of Google's Flash line: noticeably better than 3.7 Flash at software engineering, agentic tasks and multi-step reasoning. It accepts text, images, video, audio and files.
Specifications#
| Provider | |
| Released | 2026-09-02 |
| Context window | 1.05M tokens |
| Accepts | text, images, video, files, audio |
| Answers with | text |
| Reasoning mode | yes |
| Tool calling | yes |
| Open weights | no |
| Identifier | google/gemini-3.8-flash |
Price#
| Per 1M tokens | In dollars |
|---|---|
| Input (question, context) | $0.825 |
| Output (answer) | $4.125 |
For reference: a conversation of 20 questions of ~500 tokens and answers of ~800 tokens costs about $0.074. Models in reasoning mode spend more tokens on an answer than the text shows: the reasoning is paid for too.
What it is good for#
- Fast answers with good quality
- Analyzing video and audio
- Agentic tasks without a flagship price
Similar models#
Catalog models with the same kind of output, closest in the price of a typical request.
| Model | Input | Output | Window | Price |
|---|---|---|---|---|
| Kimi K2.6 | $0.65 | $3.41 | 262K | 1.2× cheaper |
| Grok 4.3 | $1.25 | $2.5 | 1M | 1.2× cheaper |
| Grok 4.20 | $1.25 | $2.5 | 2M | 1.2× cheaper |
| Kimi K2.7 Code | $0.671 | $3.35 | 262K | 1.2× cheaper |
| DeepSeek V4 Pro 0423 | $0.955 | $1.911 | 1.05M | 1.6× cheaper |
Other Google models#
How to connect in SKILLOK#
Gemini 3.8 Flash works through OpenRouter: add an OpenRouter key in Settings → AI and pick the google/gemini-3.8-flash model. It then becomes available in Space AI, in tasks and to the repository agent. In detail — Connecting a model in SKILLOK.
Where the data comes from#
Prices, the context window and capabilities come from the public OpenRouter catalog as of 2026-10-19. A provider may change the price — the exact figure is always on the model's OpenRouter page.
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