Compare AI tools

	Devin A	Cursor S	Sudowrite S	ChatGPT Operator B
Tagline	Cognition Labs' autonomous coding engineer.	VS Code fork that made AI coding actually work.	AI writing tool built specifically for fiction writers.	OpenAI's browser agent. Clicks and types on websites for you.
Category	agents	coding	writing	agents
Pricing	$500/mo	Free + $20/mo Pro + $40/mo Business	$19-$59/mo	Included with ChatGPT Pro $200/mo
Best for	Engineering teams offloading tickets. Ops/platform work.	Developers. Non-developers who want to ship working code.	Novelists, screenwriters, fiction short-form writers.	Power users willing to pay $200/mo for a browser bot.
Strengths	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick	Brainstorm, expand, rewrite modes designed for fiction Story Bible for character + plot tracking Understands voice + tone better than generic chatbots	Actually uses websites — fills forms, clicks, checks out Built into ChatGPT Good for repetitive web tasks
Weaknesses	Expensive Best for well-scoped tasks Not for solo hobbyists	Can feel overwhelming for non-coders Expensive at scale	Pricey for casual use Fiction-only focus — not for business writing	Slow vs doing it yourself Breaks on complex auth flows $200/mo gate
Kai's verdict	A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.	S-tier for coding. If you write code of any kind, this pays back the $20 in a day.	S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.	B-tier. Still early. Manus is more flexible for less money.
Link	Open →	Open →	Open →	Open →