Gemini 2.5 Pro vs GPT-5.5 Pro
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 2.5 Pro vs GPT-5.5 Pro: side by side
| Spec | Gemini 2.5 Pro | GPT-5.5 Pro | Winner |
|---|---|---|---|
| Intelligence | 27 | — | Tie |
| Output speed | 132 t/s | — | Tie |
| Output price | $10.00/1M | $180.00/1M | Gemini 2.5 Pro |
| Context | 1049K | 1050K | GPT-5.5 Pro |
| Params | — | — | Tie |
| Provider | OpenAI | Tie |
Gemini 2.5 Pro
Pros
- +Very large context window for extended inputs
- +Native support for multiple modalities in one model
- +Strong integration of text with visual and audio data
Cons
- –Higher latency on very large multimodal inputs
- –Performance can vary with extremely long contexts
- –Dependent on Google infrastructure for access
GPT-5.5 Pro
Pros
- +Very large context window
- +Native support for files, images, and text
- +Seamless multimodal integration
Cons
- –High resource use with maximum context
- –No audio or video modalities
- –Potential latency on very long inputs
Frequently asked questions
It depends on your needs. Gemini 2.5 Pro and GPT-5.5 Pro are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.