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

Claude
S
Anthropic's flagship — best reasoning + longest useful context.
Free + $20/mo Pro + team/enterprise
ChatGPT
S
The default. Strongest ecosystem + best multimodal breadth.
Free + $20/mo Plus + $200/mo Pro
DeepSeek
S
Chinese open-weight powerhouse. Crazy cheap, genuinely smart.
Free web + ultra-cheap API (~$0.14/M input tokens)

Research · 3

Perplexity
S
AI search done right. Cited answers, not chat theater.
Free + $20/mo Pro
NotebookLM
S
Google's research notebook. Turns your docs into a podcast.
Free
Elicit
S
AI research assistant for academic literature.
Free + $12-$42/mo

Coding · 2

Cursor
S
VS Code fork that made AI coding actually work.
Free + $20/mo Pro + $40/mo Business
Claude Code
S
Anthropic's CLI agent. Opus-powered, operates on your repo directly.
Part of Claude Pro/Max/Team plans

Image · 3

Midjourney
S
The aesthetic gold standard for AI image generation.
$10-$120/mo
Ideogram
S
The one that actually gets text in images right.
Free + $8/mo + $20/mo + $60/mo
Recraft
S
Vector + raster AI for designers. Actually controls the output.
Free + $12-$48/mo

Video · 3

Runway
S
The pro's AI video tool. Gen-4 is the current bar.
Free + $15-$95/mo
HeyGen
S
AI avatar videos. Record once, speak any language.
Free + $24-$65/mo
Descript
S
Edit video + podcasts by editing the transcript.
Free + $16-$50/mo

Voice · 3

ElevenLabs
S
The voice gold standard. Cloning + TTS + dubbing.
Free + $5-$330/mo
OpenAI Voice / Realtime
S
ChatGPT's voice + the Realtime API for developers.
Voice included with ChatGPT Plus; Realtime API by usage
Cartesia
S
Ultra-low-latency voice. Built for realtime agents.
Free tier + usage-based API

Meetings · 2

Granola
S
Meeting notes that don't suck. Runs locally, no bot joins.
Free + $18/mo
Fathom
S
Meeting notes, free forever for individuals.
Free for individuals + $15-$29/user/mo teams

Design · 1

v0
S
Vercel's AI-powered UI generator. Prompt to shadcn component.
Free + $20/mo

Audio · 1

Suno
S
Prompt to full song with vocals, instruments, the works.
Free + $10/mo + $30/mo

Writing · 1

Sudowrite
S
AI writing tool built specifically for fiction writers.
$19-$59/mo

Productivity · 1

Raycast AI
S
Mac launcher + AI. Command-bar genius.
Free (app) + $10/mo AI

Agents · 2

Manus
S
Autonomous AI agent that actually finishes tasks.
Free tier + $39-$199/mo
Claude Agent SDK
S
Anthropic's SDK for building your own agents on Claude.
API usage + SDK is free

Dev Platform · 5

OpenRouter
S
One API, every model. Pay-as-you-go, no subscriptions.
Pay per token — model-dependent
Replicate
S
Run any open-source AI model with an API call.
Pay per second of compute
Groq
S
The fastest AI inference in the world. Crazy low latency.
Free tier + pay-as-you-go API
Hugging Face
S
The GitHub of AI. Models, datasets, spaces — all in one.
Free + $9-$20/mo + enterprise
Ollama
S
Run LLMs locally. One-line install, GUI optional.
Free + open source

Data · 1

Julius
S
Chat with your data. Upload a CSV, ask questions, get charts.
Free + $20-$65/mo

Education · 2

Khanmigo
S
Khan Academy's AI tutor. Socratic method, built for learning.
$4/mo (free for teachers)
MagicSchool
S
AI platform built for teachers. Lesson plans + IEPs + admin.
Free + $100/yr Plus + school plans