Gemini 3.1 Pro Preview vs GPT-5.5
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 GPT-5.5: side by side
| Spec | Gemini 3.1 Pro Preview | GPT-5.5 | Winner |
|---|---|---|---|
| Intelligence | 46.5 | 41.7 | Gemini 3.1 Pro Preview |
| Output speed | 122 t/s | 52 t/s | Gemini 3.1 Pro Preview |
| Output price | $12.00/1M | $30.00/1M | Gemini 3.1 Pro Preview |
| Context | 1049K | 1050K | GPT-5.5 |
| Params | — | — | Tie |
| Provider | OpenAI | 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
Cons
- –Preview model may show inconsistent outputs
- –High resource use with maximum context
- –Requires verification on complex tasks
GPT-5.5
Pros
- +Extremely large context window
- +Native support for files and images
- +Flexible multimodal workflows
Cons
- –No native audio or video support
- –Large context may increase latency
- –Performance depends on input quality across modalities
Frequently asked questions
It depends on your needs. Gemini 3.1 Pro Preview and GPT-5.5 are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.