Compare AI tools

	Grammarly A	GitHub Copilot B	Stripe Link A	Gemini A
Tagline	Grammar check + tone + AI drafting, everywhere you type.	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.	Google's answer. Best integrated with Workspace + free for a lot.
Category	Writing	Coding	Agents	Chatbots
Pricing	Free + $12-$15/mo Premium + team plans	Free (limited) + $10/mo Pro + $19/mo Business	Free for consumers; standard Stripe per-transaction fees for merchants	Free + $20/mo Advanced (bundled with 2TB Drive)
Best for	Non-native English writers, business email, anyone who types a lot.	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.	Anyone already on Google, research tasks, summarizing long documents.
Strengths	Works in every browser/app Now has generative AI (GrammarlyGO) Tone detection + suggestions	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	Native Google Workspace integration Very long context (1M+) Deep Research feature Free tier is generous
Weaknesses	Can feel naggy Premium features gate basics Privacy concerns (reads your writing)	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	Writing quality trails Claude Over-refusals on edge content UI is cluttered
Kai's verdict	A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.	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-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
Link	Open →	Open →	Open →	Open →