KaiAI tutor for anyone

Compare AI tools

Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.

Pick tools (2 selected)

Chatbots

+ Claude + ChatGPT + Gemini + Grok + DeepSeek + Qwen + Le Chat (Mistral)

Research

+ Perplexity + NotebookLM + Elicit + Genspark

Coding

+ Cursor + Claude Code + Windsurf + GitHub Copilot + Aider + Cline + Bolt.new (StackBlitz)+ Replit Agent

Image

+ Midjourney + Ideogram + Flux (Black Forest Labs)+ DALL-E 3 + Recraft + Leonardo.ai + Adobe Firefly

Video

+ Runway + Kling + Sora + Pika + Luma Dream Machine + Google Veo + HeyGen + Synthesia + Descript

Voice

+ ElevenLabs + OpenAI Voice / Realtime + Cartesia + Play.ht + Hume AI

Meetings

+ Granola + Otter.ai + Fireflies + Fathom

Design

+ v0 + Lovable + Figma AI + Framer + Galileo AI

Productivity

+ Gamma + Raycast AI + Reflect + Taskade

Audio

+ Suno + Udio + Stable Audio

Writing

+ Sudowrite ✓ Lex + Grammarly

Agents

+ Manus + Devin + ChatGPT Operator ✓ Claude Agent SDK

Dev Platform

+ OpenRouter + Replicate + Groq + Hugging Face + Ollama

Data

+ Julius + Rows + Hex

Marketing

+ Jasper + Copy.ai + Writesonic

Education

+ Khanmigo + Duolingo Max + MagicSchool

	Lex A	Claude Agent SDK S
Tagline	Google Docs with an AI collaborator baked in.	Anthropic's SDK for building your own agents on Claude.
Category	Writing	Agents
Pricing	Free + $12/mo	API usage + SDK is free
Best for	Essays, long-form drafts, thinking on the page.	Developers building custom agents for their own company/product.
Strengths	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together	Production-grade agent primitives Built on Claude (best reasoning) Full control — build exactly what you need
Weaknesses	Less feature-rich than Google Docs AI ceiling below dedicated tools	Developer-only You build the UI
Kai's verdict	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.	S-tier for builders. The right primitives. What Kai is built on under the hood.
Link	Open →	Open →