Compare AI tools

	Perplexity S	GitHub Copilot B	Stripe Link A	Ask YouTube A
Tagline	AI search done right. Cited answers, not chat theater.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	A digital wallet that lets AI agents spend on your behalf — without ever seeing your actual card number.	YouTube's Gemini-powered conversational search lets you ask natural language questions and get answers drawn from videos, Shorts, and the web — without ever leaving the platform.
Category	Research	Coding	Agents	Research
Pricing	Free + $20/mo Pro	Free (limited) + $10/mo Pro + $19/mo Business	Free for consumers; standard Stripe per-transaction fees for merchants	Included with YouTube Premium ($13.99/mo); expanding to some free users
Best for	Replacing Google for any question where you want a cited answer in seconds.	Teams with GitHub already. Devs who don't want to change IDEs.	Anyone running autonomous AI agents (shopping bots, booking assistants, personal AI) who wants delegated payment capability without handing over raw card data.	YouTube heavy users who want to discover content through conversation rather than keyword guessing, especially for learning, research, or planning-style queries.
Strengths	Sources every claim Fast, current answers Pro Search runs multi-step research Spaces for persistent context	Great enterprise story Works in your existing IDE Chat + autocomplete	First mainstream wallet with a built-in agent authorization layer — AI agents get one-time-use cards, not your real credentials OAuth-based approval flow means you review every agent spend request before payment credentials are shared 250M+ existing Link users means instant network coverage at hundreds of thousands of Stripe-powered merchants Developer-friendly: agent builders can use Link's wallet infra instead of rolling their own payment rails Subscription tracking, auto payment-method updates, and 90-day purchase protection bundled in	Searches across long-form videos, Shorts, and text in a single conversational query Draws on real-time data from both YouTube content and the broader web Deeply integrated into YouTube's existing search bar — zero context-switching required Supports follow-up/refinement questions within the same session Powered by Google Gemini, the same LLM backbone as Google's AI Mode in Search
Weaknesses	Not a general chatbot Answers can be shallow on complex topics	Less agentic than Cursor/Claude Code Model quality varies	Stablecoin, agentic token, and BNPL agent-payment support is still 'coming soon' — traditional cards only at launch Per-transaction approval flow can be tedious for high-frequency agent tasks until spending-limit presets ship Merchant adoption for agent checkout paths is still early; real-world agentic commerce coverage is thin	Still a limited test — US Premium subscribers only, with no firm global timeline Raises real creator-traffic concerns: AI answers may reduce clicks to actual videos No standalone value — entirely dependent on having a YouTube Premium subscription
Kai's verdict	S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	Stripe Link is the most credible first move toward a real agentic payment layer — the one-time-use card model is genuinely clever, and the existing merchant network gives it a head start no startup wallet can match. But the 'approve every transaction' UX will get old fast, and the hard part (autonomous spending with guardrails) is still on the roadmap. (Verdict pending Phi's full review.)	A genuinely interesting evolution of video search that could make YouTube feel more like a knowledge engine, but it's still early-stage, US-locked, and paywalled behind Premium — watch this space rather than rerouting your workflow around it yet. (Verdict pending Phi's full review.)
Link	Open →	Open →	Open →	Open →