v0 by Vercel vs Convex

v0 by Vercel

Convex

v0 by Vercel · 14 features

• Component Blocks — Pre-built blocks (pricing tables, hero, forms, etc.) to drop into apps.
• Database Actions — Provision Neon/Supabase/Vercel Postgres from v0.
• Deploy to Vercel — One-click deploy with auto-env-vars.
• GitHub Sync — Two-way sync with real repos. Commit from v0 or edit in repo.
• Image-to-App — Drop a screenshot or Figma → generate matching UI.
• Iterative Chat — Conversational refinement — "make it dark mode" etc.
• MCP Server — Agent access to v0 via Model Context Protocol.
• Next.js 15 App Router — Output targets latest Next.js.
• Project Chats — Related chats grouped into projects.
• Prompt-to-App — Describe in prose → get a full Next.js app.
• shadcn/ui built-in — Component library preselected — consistent DS.
• v0 API — Programmatic access via API key (Premium).
• Vercel AI SDK Integration — Generated apps often include AI SDK scaffolding.
• Visual Design Mode — WYSIWYG editing of generated components.

Convex · 18 features

• Actions — Non-deterministic functions for external I/O (fetch, AI APIs, email). Cannot rea…
• Authentication — Convex Auth (built-in) or BYO provider (Clerk, Auth0, Kinde, WorkOS). ID tokens …
• Convex Agents — AI agent framework with durable memory, threads, tool use. Works with OpenAI / A…
• Convex Auth — First-party auth library: passwords, magic links, OAuth, phone — stored in your …
• Convex Components — Reusable backend modules (rate limiter, workflow, aggregate, action-retrier, etc…
• Cron Jobs — Recurring schedules defined in convex/crons.ts. UTC, cron-style patterns.
• Durable Workflows — Long-running multi-step workflows with retries and at-least-once guarantees.
• Exception Reporting — Auto-capture errors to Sentry, Axiom, Datadog.
• File Storage — Upload/download via storage API. Returns storage IDs referenced in documents.
• Full-Text Search — BM25 search index on table fields. withSearchIndex query helper.
• HTTP Actions — Expose public HTTP endpoints for webhooks, OAuth callbacks, third-party integrat…
• Log Streams — Stream function logs to Axiom, Datadog, Sentry. Pro+.
• Mutations — Transactional write functions. All reads + writes in one mutation are ACID; conf…
• Preview Deployments — Every Git branch gets its own isolated deployment. Integrates with Vercel/Netlif…
• Queries — Deterministic read-only TS functions. Automatically cached and re-run when under…
• Real-Time Subscriptions — useQuery auto-subscribes; server invalidates when data a query read changes. No …
• Scheduler — schedule.after / schedule.at — enqueue functions to run later. Durable, survives…
• Vector Search — Native vector index on tables. withIndex + filter fields. Up to 4096 dims.