Gemini 2.5 Flash Image Preview (Nano Banana) vs Qwen3 4B: side-by-side summary

Gemini 2.5 Flash Image Preview (Nano Banana) and Qwen3 4B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Gemini 2.5 Flash Image Preview (Nano Banana), from Google, has a 32,768-token context window and is priced by the provider serving it on OpenRouter.

Qwen3 4B, from Qwen, has a 128,000-token context window and is priced by the provider serving it on OpenRouter.

Context window

• Gemini 2.5 Flash Image Preview (Nano Banana): 32,768 tokens
• Qwen3 4B: 128,000 tokens

Price

• Gemini 2.5 Flash Image Preview (Nano Banana): Pricing varies by provider
• Qwen3 4B: Pricing varies by provider

Provided by

• Gemini 2.5 Flash Image Preview (Nano Banana): Google
• Qwen3 4B: Qwen

• Gemini 2.5 Flash Image Preview (Nano Banana) model details, providers and pricing
• Qwen3 4B model details, providers and pricing