Gemini 3.1 Pro Preview vs Gemini 3 Flash Preview
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Gemini 3.1 Pro Preview vs Gemini 3 Flash Preview: side by side
| Spec | Gemini 3.1 Pro Preview | Gemini 3 Flash Preview | Winner |
|---|---|---|---|
| Intelligence | 57.2 | 46.4 | Gemini 3.1 Pro Preview |
| Output speed | 133 t/s | 188 t/s | Gemini 3 Flash Preview |
| Output price | $12.00/1M | $3.00/1M | Gemini 3 Flash Preview |
| Context | 1049K | 1049K | Tie |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | Tie |
Gemini 3.1 Pro Preview
Pros
- +Handles up to 1M token contexts
- +Native support for audio, image, video, and text
- +Strong integration of multiple modalities
- +Effective for large-scale document analysis
Cons
- –Preview model may show inconsistent outputs
- –High resource use with maximum context
- –Requires verification on complex tasks
Gemini 3 Flash Preview
Pros
- +Broad native support for text, image, audio, video and files
- +Efficient handling of very large contexts
- +Fast inference suitable for preview use
Cons
- –Preview status may include occasional instability
- –Reasoning depth can be shallower than full-scale models
- –No native tool-use or external browsing mentioned
Frequently asked questions
It depends on your needs. Gemini 3.1 Pro Preview and Gemini 3 Flash Preview are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.