Doubao Pro vs Nano Banana 2 (Gemini 3.1 Flash 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 Doubao Pro and Nano Banana 2 (Gemini 3.1 Flash Image Preview).
Doubao Pro
Doubao Pro (θ±ε Pro) is ByteDance's flagship large language model, powering the Doubao AI assistant used by over 100 million monthly active users in China. Built by ByteDance's Seed team, Doubao Pro achieves top-tier results on Chinese-language benchmarks, excelling at long-context understanding, multimodal reasoning, and creative writing. Its architecture is optimized for the massive scale of ByteDance's inference infrastructure, enabling cost-efficient deployment across Douyin, TikTok, and enterprise API customers via Volcano Engine.
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Googleβs latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...
Technical Specifications
| Specification | Doubao Pro | Nano Banana 2 (Gemini 3.1 Flash Image Preview) |
|---|---|---|
| Provider | ByteDance | |
| Context Window | 256,000 tokens | 131,072 tokens |
| Agent Suitability | 86/100 | N/A |
| Time to First Token (TTFT) | 300 ms | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2026-01-15 | 2026-02-26 |
API Pricing Comparison
Input Price per Million Tokens
Doubao Pro
$0.80
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
$0.50
Output Price per Million Tokens
Doubao Pro
$1.60
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
$3.00
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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.
Doubao Pro Quirks & Gotchas
- βΈMassive user base β one of the most deployed Chinese models in production
- βΈAPI available through Volcano Engine β requires Chinese enterprise registration
Nano Banana 2 (Gemini 3.1 Flash Image Preview) Quirks & Gotchas
No developer gotchas reported.