Gemini 3.1 Flash Lite Preview vs Grok 4.20
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 Flash Lite Preview vs Grok 4.20: side by side
| Spec | Gemini 3.1 Flash Lite Preview | Grok 4.20 | Winner |
|---|---|---|---|
| Intelligence | 33.5 | 49.3 | Grok 4.20 |
| Output speed | 312 t/s | 161 t/s | Gemini 3.1 Flash Lite Preview |
| Output price | $1.50/1M | $2.50/1M | Gemini 3.1 Flash Lite Preview |
| Context | 1049K | 2000K | Grok 4.20 |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | xAI | Tie |
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
Grok 4.20
Pros
- +Handles extremely large contexts up to 2M tokens
- +Native support for text, image, and file inputs
- +Multimodal integration in a single model
Cons
- –No audio or video modality support
- –Very large context can increase latency
- –Performance depends on input quality and structure
Frequently asked questions
It depends on your needs. Gemini 3.1 Flash Lite Preview and Grok 4.20 are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.