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first_img Google released the Nano Banana 2.1 image model, with the developer call price being about half of the previous generation

Google released its latest image generation and editing model, Nano Banana 2.1, on October 6, and it has been launched in the Gemini app, AI mode of Google Search, Google Ads, as well as developer tools like Google AI Studio, Flow, and Stitch. This model can generate images from text descriptions and edit existing photos.Google stated that this upgrade focuses on three aspects: visual design, mask-based editing (where only the marked area changes), and subject consistency, meaning that characters or objects retain their original features after multiple edits. In the overall preference test for text-to-image generation, Nano Banana 2.1 scored 1050 ELO points, higher than Nano Banana 2's 990 points and Nano Banana Pro's 935 points. The model can handle up to 14 reference images simultaneously, track 4 characters and 10 objects, and output up to 4K resolution with an aspect ratio of up to 8:1. Developers can also set the thinking time before generation and enable fact-checking based on Google Search and Google Image Search.When called through the Google Developer API, the standard 1K image is priced at $0.0336, about half of Nano Banana 2's $0.067; the 4K image is $0.0756, while the previous generation was $0.151, and bulk tasks can enjoy a 50% discount. The above performance data comes from Google's own testing.

Grayscale: The increase in Bitcoin's price is highly concentrated on a few trading days, and staying out also carries an opportunity cost

Grayscale's research director Zach Pandl stated that over the past three years, Bitcoin's cumulative return rate was approximately 225%, while the Nasdaq index's return rate was 109%. However, Bitcoin's rise was not evenly distributed, with a few of the strongest trading days contributing significantly to long-term returns, increasing the difficulty for investors to time their entry.Data shows that if the five best trading days for Bitcoin are excluded, its three-year cumulative return rate would drop from 225% to 95%; excluding the best ten trading days, the return rate falls to 27%; and if the best fifteen trading days are missed, the three-year return would turn into a loss of 11%. In contrast, the return distribution of the Nasdaq is more balanced; after excluding the best fifteen trading days, the cumulative return rate drops from 109% to 21%.Grayscale indicated that during this period, less than 0.5% of trading days contributed enough gains that, when excluded, would reduce Bitcoin's cumulative return by more than half. For assets with high return and high volatility characteristics, staying out also carries an opportunity cost; since the best trading days are difficult to predict reliably, waiting for volatility to decrease or for market prospects to become clearer may mean that some price re-evaluations have already been completed.
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