Compare AI tools

	Perplexity S	Devin A	Suno S	Replicate S
Tagline	AI search done right. Cited answers, not chat theater.	Cognition Labs' autonomous coding engineer.	Prompt to full song with vocals, instruments, the works.	Run any open-source AI model with an API call.
Category	research	agents	audio	dev platform
Pricing	Free + $20/mo Pro	$500/mo	Free + $10/mo + $30/mo	Pay per second of compute
Best for	Replacing Google for any question where you want a cited answer in seconds.	Engineering teams offloading tickets. Ops/platform work.	Jingles, intros, demos, sketches, personal use.	Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	Real songs with real lyrics v4 is very good Quick turnaround	Tens of thousands of models (image, video, audio, LLMs) One-line API for any model Cog framework for custom model deploy
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Expensive Best for well-scoped tasks Not for solo hobbyists	Copyright gray zone Audio quality behind studio	Cold starts on less-popular models Pricing gets real at scale
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 for the right use case. Not for solo devs. If you manage engineers, try one license.	S-tier in its category. The first AI music tool I'd actually listen to.	S-tier for open-source model APIs. The default in this space.
Link	Open →	Open →	Open →	Open →