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
SAnthropic's flagship — best reasoning + longest useful context.
Free + $20/mo Pro + team/enterprise
ChatGPT
SThe default. Strongest ecosystem + best multimodal breadth.
Free + $20/mo Plus + $200/mo Pro
DeepSeek
SChinese open-weight powerhouse. Crazy cheap, genuinely smart.
Free web + ultra-cheap API (~$0.14/M input tokens)
Research · 3
Coding · 2
Image · 3
Video · 3
Voice · 3
Meetings · 2
Design · 1
Audio · 1
Writing · 1
Productivity · 1
Agents · 2
Dev Platform · 5
OpenRouter
SOne API, every model. Pay-as-you-go, no subscriptions.
Pay per token — model-dependent
Replicate
SRun any open-source AI model with an API call.
Pay per second of compute
Groq
SThe fastest AI inference in the world. Crazy low latency.
Free tier + pay-as-you-go API
Hugging Face
SThe GitHub of AI. Models, datasets, spaces — all in one.
Free + $9-$20/mo + enterprise
Ollama
SRun LLMs locally. One-line install, GUI optional.
Free + open source