GPT-5 Image vs Nano Banana Pro (Gemini 3 Pro Image Preview)
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GPT-5 Image and Nano Banana Pro (Gemini 3 Pro Image Preview).
GPT-5 Image
[GPT-5](https://openrouter.ai/openai/gpt-5) Image combines OpenAI's GPT-5 model with state-of-the-art image generation capabilities. It offers major improvements in reasoning, code quality, and user experience while incorporating GPT Image 1's superior instruction following,...
Nano Banana Pro (Gemini 3 Pro Image Preview)
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and...
Technical Specifications
| Specification | GPT-5 Image | Nano Banana Pro (Gemini 3 Pro Image Preview) |
|---|---|---|
| Provider | OpenAI | |
| Context Window | 400,000 tokens | 65,536 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2025-10-14 | 2025-11-20 |
API Pricing Comparison
Input Price per Million Tokens
GPT-5 Image
$10.00
Nano Banana Pro (Gemini 3 Pro Image Preview)
$2.00
Output Price per Million Tokens
GPT-5 Image
$10.00
Nano Banana Pro (Gemini 3 Pro Image Preview)
$12.00
Want to test both models live?
Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
GPT-5 Image Quirks & Gotchas
No developer gotchas reported.
Nano Banana Pro (Gemini 3 Pro Image Preview) Quirks & Gotchas
No developer gotchas reported.