Gemini 3 Flash Preview vs GPT-5.2
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 3 Flash Preview if you need
- ✓Slightly higher intelligence index for marginal reasoning gains
- ✓Unified multimodal processing focused on files, images, and text
- ✓Scalable document-level analysis within its 400k context
- ✓Proprietary OpenAI ecosystem for large-scale text/image tasks
Choose GPT-5.2 if you need
- ✓Lowest output price at $3 per 1M tokens
- ✓Native support for text, image, audio, video and files
- ✓Very large 1M context with efficient handling and 188.42 t/s speed
- ✓Fast inference suitable for preview multimodal workloads
Verdict
GPT-5.2 holds a marginal intelligence edge (46.6 vs 46.4) and emphasizes unified file/image/text processing with scalable document analysis, while Gemini 3 Flash Preview delivers far lower cost ($3 vs $14 per 1M), much larger context (1M vs 400k), native audio/video support, and known high speed (188.42 t/s). GPT-5.2 suits precision document work; Gemini 3 Flash Preview leads for speed, breadth, and efficiency in preview scenarios.
Gemini 3 Flash Preview vs GPT-5.2: side by side
| Spec | Gemini 3 Flash Preview | GPT-5.2 | Winner |
|---|---|---|---|
| Intelligence | 46.4 | 46.6 | GPT-5.2 |
| Output speed | 188 t/s | — | Tie |
| Output price | $3.00/1M | $14.00/1M | Gemini 3 Flash Preview |
| Context | 1049K | 400K | Gemini 3 Flash Preview |
| Params | — | — | Tie |
| Type | Proprietary | Proprietary | Tie |
| Provider | OpenAI | Tie |
Detailed analysis
Intelligence
Winner: GPT-5.2GPT-5.2 scores 46.6 on the intelligence index compared with Gemini 3 Flash Preview at 46.4. The 0.2-point difference is small yet gives GPT-5.2 the factual lead in raw capability metrics provided.
Pricing
Winner: Gemini 3 Flash PreviewGemini 3 Flash Preview lists output price at $3 per 1M tokens versus GPT-5.2 at $14 per 1M. This makes Gemini 3 Flash Preview more than four times cheaper on the stated pricing dimension.
Speed & Context
Winner: Gemini 3 Flash PreviewGemini 3 Flash Preview reports 188.42 t/s output speed and a 1,048,576-token context window. GPT-5.2 context is limited to 400,000 tokens with speed unreported, giving Gemini the clear advantage on both speed and scale facts.
Modalities
Winner: Gemini 3 Flash PreviewGemini 3 Flash Preview lists native support for text, image, audio, video and files. GPT-5.2 supports files, images and text but explicitly lacks native audio or video modalities per the provided strengths and limitations.
Gemini 3 Flash Preview
Pros
- +Broad native support for text, image, audio, video and files
- +Efficient handling of very large contexts
- +Fast inference suitable for preview use
Cons
- –Preview status may include occasional instability
- –Reasoning depth can be shallower than full-scale models
- –No native tool-use or external browsing mentioned
GPT-5.2
Pros
- +Extensive context window
- +Support for files, images, and text
- +Unified multimodal processing
- +Scalable document-level analysis
Cons
- –High resource use with maximum context
- –No native audio or video modalities
- –Risk of diluted focus in very long inputs
Summary: Gemini 3 Flash Preview vs GPT-5.2
Choose GPT-5.2 when the workload centers on slightly higher intelligence and document-focused image/text analysis. Select Gemini 3 Flash Preview when cost, speed, 1M context, and full audio/video support matter most. The data show Gemini winning on three of four key dimensions while GPT-5.2 retains only a narrow intelligence lead.
Frequently asked questions
Gemini 3 Flash Preview leads on price, speed, context size and modality breadth; GPT-5.2 leads only on the 0.2-point intelligence index difference.