Gemini 3.1 Flash Lite Preview vs GPT-5.3-Codex
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 GPT-5.3-Codex: side by side
| Spec | Gemini 3.1 Flash Lite Preview | GPT-5.3-Codex | Winner |
|---|---|---|---|
| Intelligence | 33.5 | 53.6 | GPT-5.3-Codex |
| Output speed | 310 t/s | 101 t/s | Gemini 3.1 Flash Lite Preview |
| Output price | $1.50/1M | $14.00/1M | Gemini 3.1 Flash Lite Preview |
| Context | 1049K | 400K | Gemini 3.1 Flash Lite Preview |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | 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
GPT-5.3-Codex
Pros
- +Specialized for programming workflows
- +Extensive context handling
- +Support for diverse input types
Cons
- –Narrower focus than general-purpose models
- –Performance tied to input quality
Frequently asked questions
It depends on your needs. Gemini 3.1 Flash Lite Preview and GPT-5.3-Codex are both multimodal models; the comparison table above shows where each one leads on the metrics that matter. See the verdict for a recommendation.