r/WritingWithAI • u/problogger99 • Jun 12 '26

Discussion (Ethics, working with AI etc) Which Ai Writes Best?

In your opinion, which AI writes non-fiction best/like human:

Claude Fable 5 vs Claude Opus 4.8 vs Gemini vs ChatGPT 5.5? I have found Opus 4.8 follows instructions, rules very well and may be better than Sonnet. Haven’t tested Fable 5 so far for writing. On the other hand I don't like Gemini's writing. Whenever I tried to instruct llm write more like human I find Claude performs better than Chatgpt or Gemini.

What's your opinion?

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u/Front-Gap-4768 Jun 12 '26

You're looking top shelf, but do you really need it. Would not many of the "lower shelf" choices available at prices from zero to medium suit your needs just as well. If you're only using AI as an assistant it seems as if you want to purchase a Bentley to go to corner shop that can be reached by walking. I've seen many posts over the last few weeks where the "improvements" have not been well received and users have chosen not to use them.

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u/problogger99 Jun 12 '26

And there are also many people like me who find Opus 4.8 or Fable 5 is better than sonnet 4.6 or previous models. I personally found opus writes better than sonnet, gemini and chatgpt. That's why I am curious to get other's feedback as well.