Compare AI tools

	Perplexity S	Lex A	Suno S	Sudowrite S
Tagline	AI search done right. Cited answers, not chat theater.	Google Docs with an AI collaborator baked in.	Prompt to full song with vocals, instruments, the works.	AI writing tool built specifically for fiction writers.
Category	Research	Writing	Audio	Writing
Pricing	Free + $20/mo Pro	Free + $12/mo	Free + $10/mo + $30/mo	$19-$59/mo
Best for	Replacing Google for any question where you want a cited answer in seconds.	Essays, long-form drafts, thinking on the page.	Jingles, intros, demos, sketches, personal use.	Novelists, screenwriters, fiction short-form writers.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together	Real songs with real lyrics v4 is very good Quick turnaround	Brainstorm, expand, rewrite modes designed for fiction Story Bible for character + plot tracking Understands voice + tone better than generic chatbots
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Less feature-rich than Google Docs AI ceiling below dedicated tools	Copyright gray zone Audio quality behind studio	Pricey for casual use Fiction-only focus — not for business writing
Kai's verdict	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.	S-tier in its category. The first AI music tool I'd actually listen to.	S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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