Compare AI tools

	Lex A	GitHub Copilot B	OpenRouter S	Pika A
Tagline	Google Docs with an AI collaborator baked in.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	One API, every model. Pay-as-you-go, no subscriptions.	The playful, accessible AI video tool.
Category	Writing	Coding	Dev Platform	Video
Pricing	Free + $12/mo	Free (limited) + $10/mo Pro + $19/mo Business	Pay per token — model-dependent	Free + $8-$58/mo
Best for	Essays, long-form drafts, thinking on the page.	Teams with GitHub already. Devs who don't want to change IDEs.	Developers experimenting across models. Apps that want fallback logic.	Social media creators, beginners, anyone wanting quick fun clips.
Strengths	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together	Great enterprise story Works in your existing IDE Chat + autocomplete	300+ models from one endpoint Automatic fallbacks between providers No subscription — just pay what you use	Ingredients feature — combine people, objects, scenes Lip sync + sound effects Fun, approachable UX
Weaknesses	Less feature-rich than Google Docs AI ceiling below dedicated tools	Less agentic than Cursor/Claude Code Model quality varies	Slight markup over direct API Some provider features not exposed	Lower fidelity than Runway/Kling Still rough on complex scenes
Kai's verdict	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	S-tier for model-shopping. I use this for every prototype before committing.	A-tier for social/casual. B-tier for serious work. Good entry point.
Link	Open →	Open →	Open →	Open →