Gemini 2.5 Pro Preview 05-06 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.
Quick verdict: which should you choose?
Choose Gemini 2.5 Pro Preview 05-06 if you need
- ✓Choose GPT-5.5 Pro if you need seamless multimodal integration of files, images, and text.
- ✓Choose GPT-5.5 Pro if you need the largest available context window at 1,050,000 tokens.
- ✓Choose GPT-5.5 Pro if you need strong reasoning focused on extended text and image inputs.
Choose GPT-5.5 Pro if you need
- ✓Choose Gemini 2.5 Pro Preview 05-06 if you need native support for audio and video alongside text and images.
- ✓Choose Gemini 2.5 Pro Preview 05-06 if you need dramatically lower output pricing at $10 per million tokens.
- ✓Choose Gemini 2.5 Pro Preview 05-06 if you need flexible cross-modal reasoning across more input types.
- ✓Choose Gemini 2.5 Pro Preview 05-06 if you need broad file handling in a preview-stage model.
Verdict
Gemini 2.5 Pro Preview 05-06 leads on cost and modality breadth while GPT-5.5 Pro edges out on context size and seamless integration. GPT-5.5 Pro's $180/M output price is 18x higher than Gemini's $10/M despite nearly identical context windows (1.05M vs 1.048M tokens). Gemini supports audio and video natively where GPT-5.5 Pro is limited to files, images, and text.
Gemini 2.5 Pro Preview 05-06 vs GPT-5.5 Pro: side by side
| Spec | Gemini 2.5 Pro Preview 05-06 | GPT-5.5 Pro | Winner |
|---|---|---|---|
| Intelligence | — | — | Tie |
| Output speed | — | — | Tie |
| Output price | $10.00/1M | $180.00/1M | Gemini 2.5 Pro Preview 05-06 |
| Context | 1049K | 1050K | GPT-5.5 Pro |
| Params | — | — | Tie |
| Provider | OpenAI | Tie |
Detailed analysis
Pricing
Winner: Gemini 2.5 Pro Preview 05-06Gemini 2.5 Pro Preview 05-06 costs $10 per million output tokens. GPT-5.5 Pro costs $180 per million output tokens, making Gemini 18 times cheaper on price.
Modalities Supported
Winner: Gemini 2.5 Pro Preview 05-06Gemini 2.5 Pro Preview 05-06 natively handles text, images, audio, video and files. GPT-5.5 Pro supports only files, images, and text with no audio or video.
Context Window
Winner: GPT-5.5 ProGPT-5.5 Pro provides 1,050,000 tokens of context. Gemini 2.5 Pro Preview 05-06 provides 1,048,576 tokens, giving GPT-5.5 Pro a marginal size advantage.
Integration & Reasoning
Winner: TieGPT-5.5 Pro emphasizes seamless multimodal integration and strong reasoning over extended inputs. Gemini 2.5 Pro Preview 05-06 emphasizes strong cross-modal reasoning and flexible file handling.
Gemini 2.5 Pro Preview 05-06
Pros
- +Very large context window
- +Native support for multiple modalities
- +Strong cross-modal reasoning
Cons
- –Preview version may show variability
- –High resource use with maximum context
- –Occasional modality-specific inconsistencies
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
Summary: Gemini 2.5 Pro Preview 05-06 vs GPT-5.5 Pro
Select GPT-5.5 Pro when maximum context size and polished text-image integration outweigh cost. Select Gemini 2.5 Pro Preview 05-06 when lower price and support for audio plus video are priorities.
Frequently asked questions
Gemini 2.5 Pro Preview 05-06 at $10 per million output tokens versus GPT-5.5 Pro at $180 per million.