Gemini 2.5 Pro vs Nano Banana 2 (Gemini 3.1 Flash Image)
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 Gemini 2.5 Pro and Nano Banana 2 (Gemini 3.1 Flash Image).
Gemini 2.5 Pro
Gemini 2.5 Pro is Google’s state-of-the-art AI model designed for advanced reasoning, coding, mathematics, and scientific tasks. It employs “thinking” capabilities, enabling it to reason through responses with enhanced accuracy...
Nano Banana 2 (Gemini 3.1 Flash Image)
Gemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines advanced...
Technical Specifications
| Specification | Gemini 2.5 Pro | Nano Banana 2 (Gemini 3.1 Flash Image) |
|---|---|---|
| Provider | ||
| Context Window | 1,048,576 tokens | 131,072 tokens |
| Agent Suitability | 90/100 | N/A |
| Time to First Token (TTFT) | 450 ms | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2025-06-17 | 2026-06-18 |
API Pricing Comparison
Input Price per Million Tokens
Gemini 2.5 Pro
$1.25
Nano Banana 2 (Gemini 3.1 Flash Image)
$0.50
Output Price per Million Tokens
Gemini 2.5 Pro
$10.00
Nano Banana 2 (Gemini 3.1 Flash Image)
$3.00
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.
Gemini 2.5 Pro Quirks & Gotchas
- ▸Legacy model — migrate to Gemini 3.1 Pro for better tool calling and lower latency
Nano Banana 2 (Gemini 3.1 Flash Image) Quirks & Gotchas
No developer gotchas reported.