Google Releases Nano Banana 2 (Gemini 3.1 Flash Image) as Default Image Model
Nano Banana 2 (Gemini 3.1 Flash Image) combines Pro-level fidelity with Flash speed, adds real-world knowledge, watermarks outputs with SynthID, supports 512px–4K, and rolls out across Gemini, Search, Flow, and developer APIs.
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TechCrunchGoogle launches Nano Banana 2 model with faster image generation | TechCrunch
Overview
Google announced Nano Banana 2, technically Gemini 3.1 Flash Image, and said it will replace earlier Nano Banana models across the Gemini app and other services.
The company first released Nano Banana in August 2025, and Nano Banana 2 aims to combine the original model's speed with the accuracy of Nano Banana Pro.
Google said images created with Nano Banana 2 will include a SynthID watermark and will be interoperable with C2PA content credentials.
Nano Banana 2 supports resolutions from 512px up to 4K and can maintain consistency for up to five characters and fidelity for up to 14 objects in one workflow.
Developers can preview Nano Banana 2 through the Gemini API, Gemini CLI, and the Vertex API, and Google said it will integrate the model into AI Studio, Flow, Search, and other tools.
Analysis
Center-leaning sources present Google's claims uncritically, using promotional language ("more realistic", "vibrant lighting"), prioritize product benefits and rollout details, and omit critical voices on misuse, bias, and policy. Editorial choices—lead-with-features structure, reliance on company statements, and sparse external sourcing—produce a pro-product, benefit-focused frame.
FAQ
Nano Banana 2 is Google's new image generation model, technically known as Gemini 3.1 Flash Image, which combines high-quality image generation with low latency.
Key features include support for resolutions from 0.5K to 4K, new aspect ratios like 1:4 and 4:1, image search grounding with real-time web data, improved image quality, consistency, and i18n text rendering.
Nano Banana 2 (Gemini 3.1 Flash Image) offers Flash speed with Pro-level fidelity, while Nano Banana Pro focuses on higher precision but is the counterpart optimized for different use cases; Nano Banana 2 adds real-world knowledge and watermarks.
It rolls out across Gemini app, Search, Flow, and developer APIs; developers can preview it via Gemini API, Gemini CLI, Vertex API, AI Studio.
Images generated with Nano Banana 2 include SynthID watermarks and are interoperable with C2PA content credentials for authenticity.
