Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Gemini 3.1 Flash Lite Preview

Nano Banana 2 (Gemini 3.1 Flash Image) is Google DeepMind’s flagship Flash image model for high-fidelity generation and fast, advanced editing at scale, optimized for price–performance. It follows complex prompts more reliably and adds configurable thinking levels (Minimal vs High/Dynamic) to balance latency and quality. Nano Banana 2 improves in-image text rendering and supports in-image localization (generate/translate text across languages directly in the image), while leveraging stronger world knowledge and web image search for more grounded, realistic outputs. It supports native aspect ratios (including 4:1, 1:4, 8:1, 1:8) and 512px/1K/2K/4K resolutions.

Gemini 3.1 Flash Lite Preview is Google’s high-efficiency model designed for high-throughput, high-volume use cases. It delivers better overall quality than Gemini 2.5 Flash Lite and comes close to Gemini 2.5 Flash performance across core capabilities. Enhancements include audio input/ASR, RAG snippet ranking, translation, data extraction, and code completion. It supports the full range of thinking levels (minimal, low, medium, high) to enable fine-grained cost/performance tuning. Pricing is set at half the cost of Gemini 3 Flash.