Gemini 3 Flash Preview
Summary
Gemini 3 Flash Preview is a proprietary language model from Google DeepMind, released on 17 Dec 2025. It accepts text, images, video, audio and PDFs and generates text, with a 1M-token context window and up to 66K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.50 per million input tokens and $3 per million output tokens (Gemini API), across 4 providers we track.
New Gemini flash lane bringing frontier-style multimodal reasoning to cheaper runs
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Google DeepMind |
|---|---|
| Release date | 17 Dec 2025 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 1M (1,048,576 tokens) [models.dev] |
| Max output | 66K tokens [models.dev] |
| Knowledge cutoff | Jan 2025 [models.dev] |
| Input | Text, images, video, audio and PDFs [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
Gemini 3 Flash Preview API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Gemini API gemini-3-flash-preview | $0.50 | $3 | $0.05 | 1M | models.dev, 4 Oct 2026 |
| Google Vertex AI gemini-3-flash-preview | $0.50 | $3 | $0.05 | 1M | models.dev, 4 Oct 2026 |
| Databricks databricks-gemini-3-flash | $0.50 | $3 | $0.05 | 1M | models.dev, 4 Oct 2026 |
| OpenRouter google/gemini-3-flash-preview | $0.50 | $3 | $0.05 | 1M | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Gemini 3 Flash Preview?
Gemini 3 Flash Preview has a context window of 1,048,576 tokens (1M) and can generate up to 65,536 tokens in a single response, according to models.dev.
How much does the Gemini 3 Flash Preview API cost?
Through Gemini API, Gemini 3 Flash Preview costs $0.50 per million input tokens and $3 per million output tokens. Prices last verified 4 Oct 2026.
Is Gemini 3 Flash Preview open source?
No. Gemini 3 Flash Preview is a proprietary model; Google DeepMind has not released its weights. It is available through APIs including Gemini API, Google Vertex AI, Databricks, OpenRouter.
When was Gemini 3 Flash Preview released?
Google DeepMind released Gemini 3 Flash Preview on 17 Dec 2025, according to models.dev.
Which providers offer Gemini 3 Flash Preview?
We track Gemini 3 Flash Preview on 4 providers: Gemini API, Google Vertex AI, Databricks, OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.
Sources
- https://github.com/sst/models.dev/blob/dev/providers/google/models/gemini-3-flash-preview.toml
- https://github.com/sst/models.dev/blob/dev/providers/google-vertex/models/gemini-3-flash-preview.toml
- https://github.com/sst/models.dev/blob/dev/providers/databricks/models/databricks-gemini-3-flash.toml
- https://openrouter.ai/google/gemini-3-flash-preview