KaiAI tutor for anyone

Kai's tool library

Curated, opinionated, tiered. S-tier is what I'd tell a friend to use. A-tier is worth your time. B-tier works but probably isn't the best option.

Chatbots · 3

Gemini
A
Google's answer. Best integrated with Workspace + free for a lot.
Free + $20/mo Advanced (bundled with 2TB Drive)
Grok
A
xAI's chatbot. Real-time X/Twitter data + fewer refusals.
Free + $30/mo SuperGrok + included with X Premium
Qwen
A
Alibaba's open chat model. Multilingual + agentic.
Free web + API

Coding · 5

Windsurf
A
Codeium's agentic IDE. Cascade agent + strong free tier.
Free + $15/mo Pro
Aider
A
Terminal-based AI pair programmer. Git-aware, model-flexible.
Free (open source) + whatever API you use
Cline
A
Open-source VS Code agent. Reads + writes + runs.
Free (open source) + your API costs
Bolt.new (StackBlitz)
A
Prompt to deployed full-stack app in the browser.
Free + $20-$200/mo
Replit Agent
A
Replit's AI that builds + deploys full apps on their platform.
$10-$25/mo Core/Teams

Image · 3

Flux (Black Forest Labs)
A
Open weights + strong photorealism. The open-source answer.
API + open weights (Schnell is Apache 2.0)
Leonardo.ai
A
Gamer + creator image gen with model fine-tuning built in.
Free + $12-$60/mo
Adobe Firefly
A
Commercially safe image gen, deeply integrated with Photoshop.
Free + included with Creative Cloud

Video · 6

Kling
A
Kuaishou's video model. The surprise standout.
Credit-based, free trial
Sora
A
OpenAI's video model. Long clips, cinematic quality.
Included with ChatGPT Plus/Pro
Pika
A
The playful, accessible AI video tool.
Free + $8-$58/mo
Luma Dream Machine
A
Smooth, cinematic motion. Image-to-video specialist.
Free + $10-$500/mo
Google Veo
A
Google's video model. Baked into Gemini + YouTube Shorts.
Included with Gemini Advanced $20/mo + YouTube creator tools
Synthesia
A
Enterprise AI avatar video for training + comms.
$22-$89/mo + enterprise

Design · 3

Lovable
A
Build a full app from a prompt. Stripe-ready.
Free + $25-$100/mo
Figma AI
A
AI features baked into the design tool you already use.
Included with Figma plans
Framer
A
Design + publish sites with AI assists built in.
Free + $5-$30/mo

Productivity · 2

Gamma
A
AI slide decks that don't look AI-generated.
Free + $10-$20/mo
Reflect
A
AI-powered networked notes. Roam with a brain.
$10/mo

Writing · 2

Lex
A
Google Docs with an AI collaborator baked in.
Free + $12/mo
Grammarly
A
Grammar check + tone + AI drafting, everywhere you type.
Free + $12-$15/mo Premium + team plans

Voice · 2

Play.ht
A
Enterprise-grade TTS with voice cloning.
Free + $39-$99/mo
Hume AI
A
Voice AI that reads + expresses emotion.
Free tier + pay-as-you-go

Audio · 2

Udio
A
Suno's main rival. Often better on instrumental nuance.
Free + $10-$30/mo
Stable Audio
A
Stability AI's open audio model. Loops + SFX + background.
Free + $12/mo Pro + enterprise

Research · 1

Genspark
A
AI agent for deep search. Generates Sparkpages — full mini-reports.
Free + $25/mo Plus

Meetings · 1

Fireflies
A
Sales-focused meeting AI with CRM integration.
Free + $10-$19/user/mo

Agents · 1

Devin
A
Cognition Labs' autonomous coding engineer.
$500/mo

Data · 2

Rows
A
Spreadsheets with AI + live integrations baked in.
Free + $19-$89/user/mo
Hex
A
Modern data notebook with Magic AI assistant.
Free + $28+/user/mo

Marketing · 1

Copy.ai
A
AI GTM platform. Workflows for sales + marketing ops.
Free + $49-$249/mo

Education · 1

Duolingo Max
A
Duolingo + AI. Explain My Answer + Roleplay features.
$30/mo (or ~$168/yr)