Gemini 2.5 Pro Preview 05-06 vs Gemini 3.5 Flash
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 Preview 05-06 vs Gemini 3.5 Flash: side by side
| Spec | Gemini 2.5 Pro Preview 05-06 | Gemini 3.5 Flash | Winner |
|---|---|---|---|
| Intelligence | — | 45.4 | Tie |
| Output speed | — | 157 t/s | Tie |
| Output price | $10.00/1M | $9.00/1M | Gemini 3.5 Flash |
| Context | 1049K | 1049K | Tie |
| Params | — | — | Tie |
| Provider | Tie |
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
Gemini 3.5 Flash
Pros
- +High speed and efficiency
- +Strong multimodal integration
- +Large context window support
Cons
- –Trades depth for speed on complex tasks
- –Variable performance on specialized domains
- –Context utilization depends on task
Frequently asked questions
It depends on your needs. Gemini 2.5 Pro Preview 05-06 and Gemini 3.5 Flash are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.