Compare AI tools

	Devin A	Windsurf A	Perplexity S	Ollama S
Tagline	Cognition Labs' autonomous coding engineer.	Codeium's agentic IDE. Cascade agent + strong free tier.	AI search done right. Cited answers, not chat theater.	Run LLMs locally. One-line install, GUI optional.
Category	Agents	Coding	Research	Dev Platform
Pricing	$500/mo	Free + $15/mo Pro	Free + $20/mo Pro	Free + open source
Best for	Engineering teams offloading tickets. Ops/platform work.	Developers who want Cursor-like power for less money.	Replacing Google for any question where you want a cited answer in seconds.	Devs wanting offline/local LLMs for privacy or experimentation.
Strengths	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	Cheaper than Cursor Cascade agent for multi-file tasks Solid free tier	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Run Llama, Mistral, Qwen, etc. on your laptop Simple CLI + API Hardware-aware (picks the right quant)
Weaknesses	Expensive Best for well-scoped tasks Not for solo hobbyists	Smaller community Model selection more limited	Not a general chatbot Answers can be shallow on complex topics	Needs beefy laptop for larger models Speed way behind cloud APIs
Kai's verdict	A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.	A-tier. Close second to Cursor. If $5/mo matters, start here.	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	S-tier for local inference. If you care about privacy or want to tinker, install this today.
Link	Open →	Open →	Open →	Open →