Gemini 3.1 Pro Preview Custom Tools vs GPT-5.4 Nano
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 Custom Tools vs GPT-5.4 Nano: side by side
| Spec | Gemini 3.1 Pro Preview Custom Tools | GPT-5.4 Nano | Winner |
|---|---|---|---|
| Intelligence | — | 38.2 | Tie |
| Output speed | — | 151 t/s | Tie |
| Output price | $12.00/1M | $1.25/1M | GPT-5.4 Nano |
| Context | 1049K | 400K | Gemini 3.1 Pro Preview Custom Tools |
| Params | — | — | Tie |
| Provider | OpenAI | Tie |
Gemini 3.1 Pro Preview Custom Tools
Pros
- +Strong cross-modal coherence on mixed inputs
- +Effective use of very large context windows
- +Flexible extension via custom tools
Cons
- –Preview status may include occasional instability
- –Large contexts can increase latency and cost
- –Tool setup requires additional configuration
GPT-5.4 Nano
Pros
- +Very large 400k token context
- +Handles file, image, and text inputs
- +Multimodal flexibility
Cons
- –Nano size may limit depth on complex tasks
- –No audio or video modalities
Frequently asked questions
It depends on your needs. Gemini 3.1 Pro Preview Custom Tools and GPT-5.4 Nano are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.