Google has officially moved its two flagship image generation models, Nano Banana 2 and Nano Banana Pro, to General Availability. That means stable model IDs, production-grade SLAs, and no more -preview suffix in your API calls. For teams that have been holding off on committing these models to production pipelines, the wait is over.

The two models map to distinct positions in Google's image generation lineup: Nano Banana 2 is gemini-3.1-flash-image, built for speed and high-volume workloads, while Nano Banana Pro is gemini-3-pro-image, designed for professional-grade precision and complex creative tasks. Google's product strategy here is a deliberate dual-model approach: one focused on extreme quality (Pro) and the other on extreme efficiency (Flash).