Compare AI tools

	GitHub Copilot B	Runway S	Lex A	Sudowrite S
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	The pro's AI video tool. Gen-4 is the current bar.	Google Docs with an AI collaborator baked in.	AI writing tool built specifically for fiction writers.
Category	coding	video	writing	writing
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Free + $15-$95/mo	Free + $12/mo	$19-$59/mo
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Marketing video, pitch decks, b-roll, creative shorts.	Essays, long-form drafts, thinking on the page.	Novelists, screenwriters, fiction short-form writers.
Strengths	Great enterprise story Works in your existing IDE Chat + autocomplete	Most mature video workflow Character consistency via Act-One Gen-4 quality is production-grade	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together	Brainstorm, expand, rewrite modes designed for fiction Story Bible for character + plot tracking Understands voice + tone better than generic chatbots
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Expensive at scale Still needs post-editing	Less feature-rich than Google Docs AI ceiling below dedicated tools	Pricey for casual use Fiction-only focus — not for business writing
Kai's verdict	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	S-tier. Market leader with reason. Start here for serious video.	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.	S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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