Nano Banana 2.1 API at $0.03 per image, same price at 1K, 2K and 4K (reapi.ai)

Google has launched the Nano Banana 2.1 API, offering a competitive pricing model at $0.0336 for 1K images, $0.0504 for 2K, and $0.0756 for 4K. This represents a significant cost reduction of approximately 50% compared to its predecessor, Nano Banana 2, which is being deprecated with a scheduled shut down on October 29, 2026. The new pricing structure also features a flat-rate option on reAPI, allowing developers to utilize images across different resolutions without additional costs, making it easier to choose higher resolutions based on use case rather than price. The technical implications of this pricing model are noteworthy, as images are billed based on output tokens, motivating users to adopt 1K images under traditional pricing. However, with Nano Banana 2.1's flat rate for all resolutions, developers can opt for higher quality (2K or 4K) for projects such as printed media or infographics without incurring additional costs. Google's pricing strategy aims to streamline the transition for developers migrating from the deprecated model, while also encouraging the use of more resource-intensive features like grounding and higher reasoning levels, ultimately enhancing the utility and performance of AI-driven image generation applications.