Compare AI tools

	ChatGPT Operator B	Kling A	Claude Agent SDK S	Aider A
Tagline	OpenAI's browser agent. Clicks and types on websites for you.	Kuaishou's video model. The surprise standout.	Anthropic's SDK for building your own agents on Claude.	Terminal-based AI pair programmer. Git-aware, model-flexible.
Category	Agents	Video	Agents	Coding
Pricing	Included with ChatGPT Pro $200/mo	Credit-based, free trial	API usage + SDK is free	Free (open source) + whatever API you use
Best for	Power users willing to pay $200/mo for a browser bot.	Anyone who wants top-tier video quality for less.	Developers building custom agents for their own company/product.	Developers who want open-source tooling with full control.
Strengths	Actually uses websites — fills forms, clicks, checks out Built into ChatGPT Good for repetitive web tasks	Very strong motion + physics Often beats Runway on realism Great price	Production-grade agent primitives Built on Claude (best reasoning) Full control — build exactly what you need	Works in any terminal Auto-commits changes with meaningful messages Works with any model (Claude, GPT, local) Minimal learning curve
Weaknesses	Slow vs doing it yourself Breaks on complex auth flows $200/mo gate	UX is rough for English speakers Queue times	Developer-only You build the UI	Terminal-only Less agentic than Claude Code Setup on Windows is fiddly
Kai's verdict	B-tier. Still early. Manus is more flexible for less money.	A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.	S-tier for builders. The right primitives. What Kai is built on under the hood.	A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
Link	Open →	Open →	Open →	Open →