Google Launches Nano Banana 2 Lite: 4-Second Image Generation at Half Cost

Google DeepMind launched Nano Banana 2 Lite, its fastest and cheapest AI image-generation model, available today across the Google ecosystem. The model, technically called Gemini 3.1 Flash Lite Image, generates images in approximately 4 seconds compared to 20 seconds for the standard Nano Banana version. Google designed the model to balance quality and speed for rapid prototyping and idea exploration, addressing the industry challenge where high-quality AI image models typically require significant time and computational cost.

Arena.ai Scores Show Near-Parity with Standard Model

Google provided visual comparisons and Arena.ai Elo scores demonstrating that users rate Nano Banana 2 Lite outputs almost as highly as non-Lite versions. The company noted that vibemarking metrics may not capture all details that affect AI image quality upon closer inspection. Google stated the model is part of the Gemini 3.1 family and is ideal for applications where quality can take a secondary role to speed.

Model Struggles with Small Text and Character Consistency

Google acknowledged specific limitations in Nano Banana 2 Lite's output quality. The model tends to have more difficulty rendering text, particularly very small text elements. Infographics generated by the model are more likely to include incorrect data. Characters and people may show poor consistency across multiple iterations of the same prompt.

Four-Second Generation Cuts API Costs by Half

Nano Banana 2 Lite generates images in approximately 4 seconds using the default low-thinking mode, compared to 20 seconds for standard Nano Banana. Google stated the model averages $0.034 per 1K images. API pricing is set at $0.25 for 1M input tokens and $1.50 for 1M output tokens — half the rate of Nano Banana 2. By comparison, Nano Banana Pro charges $2 for 1M input tokens and $12 for 1M output tokens, making its output pricing eight times higher than Nano Banana 2 Lite.

FAQ

What is the generation speed difference between Nano Banana 2 Lite and the standard version?

Nano Banana 2 Lite generates images in approximately 4 seconds in default low-thinking mode, while the standard Nano Banana takes about 20 seconds to generate the same images.

How much does Nano Banana 2 Lite cost compared to other Nano Banana models?

Nano Banana 2 Lite averages $0.034 per 1K images with API rates of $0.25 for 1M input tokens and $1.50 for 1M output tokens. This is half the rate of Nano Banana 2 and significantly cheaper than Nano Banana Pro, which charges $2 for 1M input tokens and $12 for 1M output tokens.

What are the known quality limitations of Nano Banana 2 Lite?

Google stated that Nano Banana 2 Lite tends to struggle with rendering very small text, may include incorrect data in infographics, and can show poor consistency in characters and people across multiple iterations of the same prompt.