Gemini 2.5 Flash vs Gemini 3.1 Flash Lite Preview
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 Flash vs Gemini 3.1 Flash Lite Preview: side by side
| Spec | Gemini 2.5 Flash | Gemini 3.1 Flash Lite Preview | Winner |
|---|---|---|---|
| Intelligence | 20.6 | 33.5 | Gemini 3.1 Flash Lite Preview |
| Output speed | 220 t/s | 312 t/s | Gemini 3.1 Flash Lite Preview |
| Output price | $2.50/1M | $1.50/1M | Gemini 3.1 Flash Lite Preview |
| Context | 1049K | 1049K | Tie |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | Tie |
Gemini 2.5 Flash
Pros
- +Broad native support for multiple input modalities
- +Efficient handling of very large contexts
- +Strong balance of speed and capability
- +Versatile across text, vision and audio tasks
Cons
- –Lower peak performance than larger Gemini variants on complex tasks
- –Speed optimizations may reduce depth on nuanced reasoning
- –Practical limits on full 1M-token context utilization
Gemini 3.1 Flash Lite Preview
Pros
- +Broad native support for multiple modalities
- +Very large context window for document and media tasks
- +Lightweight design optimized for speed
- +Unified handling of video, audio and files
Cons
- –Preview model may show inconsistent behavior
- –Lite variant trades depth for efficiency
- –Experimental features can be less reliable than stable releases
Frequently asked questions
It depends on your needs. Gemini 2.5 Flash and Gemini 3.1 Flash Lite Preview are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.