Compare AI tools

	Groq S	Sudowrite S	ChatGPT Operator B	Fathom S
Tagline	The fastest AI inference in the world. Crazy low latency.	AI writing tool built specifically for fiction writers.	OpenAI's browser agent. Clicks and types on websites for you.	Meeting notes, free forever for individuals.
Category	Dev Platform	Writing	Agents	Meetings
Pricing	Free tier + pay-as-you-go API	$19-$59/mo	Included with ChatGPT Pro $200/mo	Free for individuals + $15-$29/user/mo teams
Best for	Developers who need sub-100ms LLM responses.	Novelists, screenwriters, fiction short-form writers.	Power users willing to pay $200/mo for a browser bot.	Solo operators, freelancers, small teams on a budget.
Strengths	500+ tokens/sec on Llama/Mixtral — feels instant Custom LPU hardware Great free tier	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	Unlimited free tier for solo use Strong summaries + action items Works in Zoom, Meet, Teams
Weaknesses	Open-weight models only (no Claude/GPT) Less flexibility on custom configs	Pricey for casual use Fiction-only focus — not for business writing	Slow vs doing it yourself Breaks on complex auth flows $200/mo gate	Bot-joining model Team features gated
Kai's verdict	S-tier for speed. When latency is the product, start here.	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.	S-tier for solo + free. The best free option, hands down.
Link	Open →	Open →	Open →	Open →