Compare AI tools

	GitHub Copilot B	Grok A	Fathom S	Elicit S
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	xAI's chatbot. Real-time X/Twitter data + fewer refusals.	Meeting notes, free forever for individuals.	AI research assistant for academic literature.
Category	coding	chat	meeting	research
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Free + $30/mo SuperGrok + included with X Premium	Free for individuals + $15-$29/user/mo teams	Free + $12-$42/mo
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Breaking news, live event tracking, users already on X.	Solo operators, freelancers, small teams on a budget.	Grad students, researchers, anyone doing literature reviews.
Strengths	Great enterprise story Works in your existing IDE Chat + autocomplete	Live access to X posts for real-time events Less restrictive on edgy questions Fast inference on Grok-3 and up	Unlimited free tier for solo use Strong summaries + action items Works in Zoom, Meet, Teams	Searches 125M+ papers Extracts + synthesizes findings across papers Systematic review workflow
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Writing quality trails Claude/ChatGPT Political bias debates Ecosystem is just X	Bot-joining model Team features gated	Academic-only Can hallucinate citations — verify everything
Kai's verdict	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	A-tier for real-time. B-tier for everything else. Worth checking when news breaks.	S-tier for solo + free. The best free option, hands down.	S-tier for academic research. Nothing else comes close for systematic reviews.
Link	Open →	Open →	Open →	Open →