Compare AI tools

	GitHub Copilot B	Devin A	Grok A	Perplexity S
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Cognition Labs' autonomous coding engineer.	xAI's chatbot. Real-time X/Twitter data + fewer refusals.	AI search done right. Cited answers, not chat theater.
Category	coding	agents	chat	research
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	$500/mo	Free + $30/mo SuperGrok + included with X Premium	Free + $20/mo Pro
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Engineering teams offloading tickets. Ops/platform work.	Breaking news, live event tracking, users already on X.	Replacing Google for any question where you want a cited answer in seconds.
Strengths	Great enterprise story Works in your existing IDE Chat + autocomplete	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	Live access to X posts for real-time events Less restrictive on edgy questions Fast inference on Grok-3 and up	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Expensive Best for well-scoped tasks Not for solo hobbyists	Writing quality trails Claude/ChatGPT Political bias debates Ecosystem is just X	Not a general chatbot Answers can be shallow on complex topics
Kai's verdict	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.	A-tier for real-time. B-tier for everything else. Worth checking when news breaks.	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
Link	Open →	Open →	Open →	Open →