Compare AI tools

	Devin A	GitHub Copilot B	Duolingo Max A	Gamma A
Tagline	Cognition Labs' autonomous coding engineer.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Duolingo + AI. Explain My Answer + Roleplay features.	AI slide decks that don't look AI-generated.
Category	Agents	Coding	Education	Productivity
Pricing	$500/mo	Free (limited) + $10/mo Pro + $19/mo Business	$30/mo (or ~$168/yr)	Free + $10-$20/mo
Best for	Engineering teams offloading tickets. Ops/platform work.	Teams with GitHub already. Devs who don't want to change IDEs.	Language learners who've outgrown basic Duolingo.	Pitch decks, proposals, internal presentations — fast.
Strengths	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	Great enterprise story Works in your existing IDE Chat + autocomplete	Explain My Answer = personal tutor for every mistake Roleplay = real conversation practice Gamification that actually sticks	Strong templates Decks, docs, webpages Doesn't look generic
Weaknesses	Expensive Best for well-scoped tasks Not for solo hobbyists	Less agentic than Cursor/Claude Code Model quality varies	Pricey vs free Duolingo Conversation AI still stiff sometimes	Locked into Gamma's format Export quality varies
Kai's verdict	A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.	A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.
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