Gemini 3 Flash Preview vs GPT-5
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
- ✓Seamless text-image-file integration for complex document workflows
- ✓Very large 400k-token context handling without needing maximum scale
- ✓Native multimodal input support in a proprietary OpenAI ecosystem
Choose GPT-5 if you need
- ✓Highest intelligence score (37.8) for advanced reasoning tasks
- ✓Lowest price at $3 per 1M tokens with near-identical speed
- ✓Largest 1M-token context plus native audio and video support
- ✓Fast inference suitable for preview-stage multimodal applications
Verdict
Gemini 3 Flash Preview leads overall with a much higher intelligence index (37.8 vs 15.3), lower price ($3 vs $10 per 1M tokens), larger context window (1M vs 400k), and broader native multimodal support including audio and video. GPT-5 shows strengths in seamless text-image-file integration but remains a hypothetical model with unverified performance and higher costs. Gemini is the stronger choice for most practical multimodal tasks based on the provided metrics.
Gemini 3 Flash Preview vs GPT-5: side by side
| Spec | Gemini 3 Flash Preview | GPT-5 | Winner |
|---|---|---|---|
| Intelligence | 37.8 | 15.3 | Gemini 3 Flash Preview |
| Output speed | 169 t/s | 167 t/s | Gemini 3 Flash Preview |
| Output price | $3.00/1M | $10.00/1M | Gemini 3 Flash Preview |
| Context | 1049K | 400K | Gemini 3 Flash Preview |
| Params | — | — | Tie |
| Provider | OpenAI | Tie |
Detailed analysis
Intelligence
Winner: Gemini 3 Flash PreviewGemini 3 Flash Preview reports a substantially higher intelligence index of 37.8 compared to GPT-5's 15.3. This gap indicates stronger performance on complex multimodal reasoning benchmarks according to the given data.
Pricing
Winner: Gemini 3 Flash PreviewGemini 3 Flash Preview is priced at $3 per million tokens while GPT-5 costs $10 per million tokens. The threefold price advantage favors Gemini for high-volume usage.
Speed and Context
Winner: Gemini 3 Flash PreviewGemini offers a slightly higher output speed (169.3 vs 167.38 tokens/s) and more than double the context length (1,048,576 vs 400,000 tokens). These metrics support more efficient handling of very large multimodal inputs.
Multimodal Capabilities
Winner: Gemini 3 Flash PreviewGemini provides broad native support for text, image, audio, video and files with efficient large-context handling. GPT-5 emphasizes seamless text-image-file integration but lacks explicit audio or video coverage in the listed strengths.
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
Pros
- +Very large context window
- +Native multimodal input support
- +Seamless text-image-file integration
Cons
- –Hypothetical model with unverified performance
- –High resource demands for maximum context
- –Potential latency on large multimodal tasks
Summary: Gemini 3 Flash Preview vs GPT-5
Choose Gemini 3 Flash Preview for superior verified metrics across intelligence, cost, speed, and modality breadth. Select GPT-5 only if your workflow specifically requires its described seamless text-image-file integration and you can accept its hypothetical status and higher price.
Frequently asked questions
Gemini 3 Flash Preview is better overall due to higher intelligence index, lower price, larger context, and broader multimodal support.