Nano Banana (Gemini 2.5 Flash Image) vs Step 3.7 Flash
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 Nano Banana (Gemini 2.5 Flash Image) and Step 3.7 Flash.
Nano Banana (Gemini 2.5 Flash Image)
Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation,...
Step 3.7 Flash
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...
Technical Specifications
| Specification | Nano Banana (Gemini 2.5 Flash Image) | Step 3.7 Flash |
|---|---|---|
| Provider | StepFun | |
| Context Window | 32,768 tokens | 256,000 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 | 2025-10-07 | 2026-05-28 |
API Pricing Comparison
Input Price per Million Tokens
Nano Banana (Gemini 2.5 Flash Image)
$0.30
Step 3.7 Flash
$0.20
Output Price per Million Tokens
Nano Banana (Gemini 2.5 Flash Image)
$2.50
Step 3.7 Flash
$1.15
Want to test both models live?
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Nano Banana (Gemini 2.5 Flash Image) Quirks & Gotchas
No developer gotchas reported.
Step 3.7 Flash Quirks & Gotchas
No developer gotchas reported.