Claude by Anthropic
I work a 9-to-5, run a content business, and I'm in a medical residency. Without some sort of AI assistance doing all three without burning out would be basically impossible. Claude wasn't the first thing I tried (I started using AI since before ChatGPT was a thing, back when you had to go on OpenAI Playground) but so far it has been the best thing. The personal productivity wins, especially from Claude Cowork, are just unprecedented. On the content side, it has been the best at understanding my style and the context of the work and drafting like a human. On running my Instagram page alone, I believe it saves me 10+ hours per week, helping me with everything from maintaining a content calendar to creating draft scripts based on loose ideas + my actual style and voice. The limitations on image output and image generation are the only thing I can think of For marketing, nothing even comes close to the output quality of Claude. For writing, I believe it's a combination of solid context awareness and just better, more natural writing skills. But the real game-changer for productivity is Claude Cowork (and eventually Claude Code, I would think, but so far Cowork is what I use) as a desktop agent with local access. Gemini doesn't have that, OpenAI's option seems much more limited and less user-friendly I don't really know, I use it for personal projects and productivity. I've never ran into restrictive limits. Very effective, so far I haven't ran into issues or inaccurate citations. They're amazing. As long as you do give it some context on your previous writing or the writing style you're looking for, Claude is hands-down the best for creative writing.