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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)

chat

+ 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

meeting

+ 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

	Devin A	OpenRouter S
Tagline	Cognition Labs' autonomous coding engineer.	One API, every model. Pay-as-you-go, no subscriptions.
Category	agents	dev platform
Pricing	$500/mo	Pay per token — model-dependent
Best for	Engineering teams offloading tickets. Ops/platform work.	Developers experimenting across models. Apps that want fallback logic.
Strengths	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	300+ models from one endpoint Automatic fallbacks between providers No subscription — just pay what you use
Weaknesses	Expensive Best for well-scoped tasks Not for solo hobbyists	Slight markup over direct API Some provider features not exposed
Kai's verdict	A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.	S-tier for model-shopping. I use this for every prototype before committing.
Link	Open →	Open →