Compare AI tools

	Perplexity S	Claude S	Grok A	GitHub Copilot B
Tagline	AI search done right. Cited answers, not chat theater.	Anthropic's flagship — best reasoning + longest useful context.	xAI's chatbot. Real-time X/Twitter data + fewer refusals.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.
Category	Research	Chatbots	Chatbots	Coding
Pricing	Free + $20/mo Pro	Free + $20/mo Pro + team/enterprise	Free + $30/mo SuperGrok + included with X Premium	Free (limited) + $10/mo Pro + $19/mo Business
Best for	Replacing Google for any question where you want a cited answer in seconds.	Long writing, code, careful thinking, documents over 50 pages.	Breaking news, live event tracking, users already on X.	Teams with GitHub already. Devs who don't want to change IDEs.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Best-in-class writing + nuanced reasoning 1M context on Opus Artifacts for code/docs Lowest hallucination rate in my testing	Live access to X posts for real-time events Less restrictive on edgy questions Fast inference on Grok-3 and up	Great enterprise story Works in your existing IDE Chat + autocomplete
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Image generation is weak No native web search on all tiers	Writing quality trails Claude/ChatGPT Political bias debates Ecosystem is just X	Less agentic than Cursor/Claude Code Model quality varies
Kai's verdict	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.	A-tier for real-time. B-tier for everything else. Worth checking when news breaks.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.
Link	Open →	Open →	Open →	Open →