Gemini 3.1 Pro Preview Custom Tools vs GPT-4.1
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-4.1: side by side
| Spec | Gemini 3.1 Pro Preview Custom Tools | GPT-4.1 | Winner |
|---|---|---|---|
| Intelligence | — | 26.3 | Tie |
| Output speed | — | 130 t/s | Tie |
| Output price | $12.00/1M | $8.00/1M | GPT-4.1 |
| Context | 1049K | 1048K | Gemini 3.1 Pro Preview Custom Tools |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | 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-4.1
Pros
- +Handles very large context windows
- +Processes images, text, and files together
- +Strong reasoning from OpenAI GPT lineage
- +Flexible multimodal inputs
Cons
- –Closed-source with no public weights
- –May hallucinate on complex tasks
- –High compute cost for full context
Frequently asked questions
It depends on your needs. Gemini 3.1 Pro Preview Custom Tools and GPT-4.1 are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.