novelai.net レビュー 

This is the best web-based AI generator for furry and anime images that allows NSFW content, and arguably offers the best inpainting of any AI without requiring any setup.

However, they’ve been taking steps in the wrong direction with each new update since they released NAI 4.5. They have managed to neuter their biggest selling point—the character reference feature—by splitting it into separate character and style references, which has been a complete buggy mess and ends up merging details instead of isolating them.

For $4.99, you get a sad 50–70 generations depending on your settings, so most people will opt for the unlimited image generations at the $25 tier. Despite paying for the highest tier, they’ll throttle you hard before you even get halfway through what should have been reasonably offered, and you’ll quickly notice a drop off in generation quality, which they'll still charge you for.

It’s a good AI to try once, but as of lately, it's definitely not worth subscribing to.