v0

Generate React components from a brief and write them into a local project with previews

NOT REALLY · consider alternatives
price $30/mo per seatsubscription / year $360estimated build time closest consolation build: one sittingreplaced by 0 people

A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For v0, generate React components from a brief and write them into a local project with previews. The hard boundary is vercel models, design tuning, component data, deployment, and ecosystem integration, plus frontier models, context infrastructure, and execution safety.

Build verification: not recorded. How we judge buildability

What you give up

  • Vercel models, design tuning, component data, deployment, and ecosystem integration
  • frontier proprietary model
  • large-scale code retrieval
  • cloud sandbox fleet
  • enterprise policy and support

Why people still pay

People still pay for v0 because the UI can be copied, but high-quality code models, context ranking, safe execution, and constant evaluation are the product. The recurring cost buys model changes, indexing, prompt injection, tool permissions, sandboxing, evaluation, telemetry choices, and IDE compatibility, not just the visible interface.

Your build guide

The stack, security requirements, and agent rules for a focused replacement.

Before you start

  • VS Code
  • OpenAI or Anthropic API key
  • Git repository
  • local command sandbox
01
Use TypeScript, Node.js 22, a VS Code extension, SQLite, and one user-supplied model API.
02
Model selected repositories or projects, operations, results, revisions, and run logs; keep stable source IDs and timestamps.
03
Interface for this AI coding agents and developer workspaces workflow: a browser popup or toolbar action with a saved-items view.
engineering roadmap

Implementation plan

1

Phase 1, architecture and data

Use TypeScript, Node.js 22, a VS Code extension, SQLite, and one user-supplied model API. Model selected repositories or projects, operations, results, revisions, and run logs; keep stable source IDs and timestamps.

2

Phase 2, implement

For AI coding agents and developer workspaces, select one repository and record its branch, HEAD revision, allowed tools, and agent run ID.

3

Phase 3, implement

Make changes on a branch with an inspectable diff and record each command, result, and approval.

4

Phase 4, review and output

Run the project’s verification command and show the diff plus final status before merge or export.

5

Phase 5, recovery and acceptance

Verify this invariant with a saved fixture: A failed tool call or interrupted run must retain the branch and trace; no file outside the selected repository may change. State the practical limit: Vercel models, design tuning, component data, deployment, and ecosystem integration.

the pro prompt
Build me a focused AI coding agents and developer workspaces workflow for the personal core of v0. Requirements:

- Use TypeScript, Node.js 22, a VS Code extension, SQLite, and one user-supplied model API. Model selected repositories or projects, operations, results, revisions, and run logs; keep stable source IDs and timestamps.
- Paid product context: Generate React components from a brief and write them into a local project with previews. Build only this DIY scope: Generate React components from a brief, write them into a local project with previews, index the repository, propose reviewable patches, run approved commands, and preserve an auditable session log.
- For AI coding agents and developer workspaces, select one repository and record its branch, HEAD revision, allowed tools, and agent run ID.
- Make changes on a branch with an inspectable diff and record each command, result, and approval.
- Run the project’s verification command and show the diff plus final status before merge or export.
- Use a browser popup or toolbar action with a saved-items view. Required input or access: VS Code; OpenAI or Anthropic API key. Keep credentials in .env.
- Recovery: A failed tool call or interrupted run must retain the branch and trace; no file outside the selected repository may change.
- Acceptance: with one labelled sample, show the input, saved intermediate state, and exported result; verify this invariant: A failed tool call or interrupted run must retain the branch and trace; no file outside the selected repository may change.
- Out of scope: Vercel models, design tuning, component data, deployment, and ecosystem integration; frontier proprietary model. Keep this a personal, inspectable workflow.
- Include a README with setup, a sample input, required keys or permissions, data location, and the supported scope.

$ open in your agent (prompt prefilled, you press enter), copy the prompt or copy AGENTS.md · generated from this app's build plan

share on X ↗

Alternatives to building your own

OnlookVisual AI editor for React apps: click an element, restyle it, let the model write the code.26kjul 2026open source↗OpenUIDescribe a component and see it rendered live, with output as HTML, React, or Svelte.22kaug 2026open source↗DyadPrompt a React app, preview it locally, then own the files and the bugs.21kaug 2026open source↗

all 3 free alternatives to v0 →· no votes, no pay-to-list · just what's real

v0 pricing

planmonthlyannual (per mo)what you get
free$0/user$0/user$5 model/usage credits per month plus 7 messages per day.
plus$30/user—$30 monthly credits/user plus a $2 daily credit grant on days the user logs in.
business$100/user—$30 monthly credits/user plus a $2 daily credit grant on login; business controls.
enterprise——Custom seats, credits, controls and support.Contact sales.

free tier$5 usage credits/month plus 7 messages/day

billingmonthly only; no public annual plan

hidden costsUsage is metered by model and cache type. Published rates range from $0.20/M input and $1.20/M output for Mini to $10/M input and $50/M output for Max Fast; teams can buy shared extra credits.

pricing sources checked 2026-08-14 · pricing source ↗

Questions about v0

Can you build your own v0 with AI?

A full replacement is not the recommended project. A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For v0, generate React components from a brief and write them into a local project with previews. The hard boundary is vercel models, design tuning, component data, deployment, and ecosystem integration, plus frontier models, context infrastructure, and execution safety.

What does the v0 build prompt cover?

The prompt starts with this scope: Generate React components from a brief, write them into a local project with previews, index the repository, propose reviewable patches, run approved commands, and preserve an auditable session log. Full-product capabilities excluded from the comparison include: Vercel models, design tuning, component data, deployment, and ecosystem integration; frontier proprietary model; large-scale code retrieval. Follow the implementation plan and its prerequisites before expanding the build.

How do I use the prompt, AGENTS.md and agent skills?

Start with the v0 prerequisites and stack, then copy the prompt into your coding agent. Save the project rules as AGENTS.md in the project root. Linked skills are optional packages or source instructions for specific tasks; review their current contents and install only those matching the chosen stack. A skill does not supply API credentials or verify the finished app.

How long will this v0 project take?

The catalogue estimate is closest consolation build: one sitting for the limited scope. Setup, integration approvals, debugging, deployment and ongoing maintenance can add time. This is an estimate, not a delivery guarantee.

What would I give up by replacing v0?

Vercel models, design tuning, component data, deployment, and ecosystem integration; frontier proprietary model; large-scale code retrieval; cloud sandbox fleet; enterprise policy and support. People still pay for v0 because the UI can be copied, but high-quality code models, context ranking, safe execution, and constant evaluation are the product. The recurring cost buys model changes, indexing, prompt injection, tool permissions, sandboxing, evaluation, telemetry choices, and IDE compatibility, not just the visible interface.

What price is this guide comparing against?

The recorded Plus plan is $30/mo per seat (monthly per user), checked 2026-08-14. Check the linked pricing source before buying. Building your own also has hosting, API and maintenance costs; the recorded amount is not a guaranteed saving.

What can I use instead of building v0?

Onlook: Visual AI editor for React apps: click an element, restyle it, let the model write the code. OpenUI: Describe a component and see it rendered live, with output as HTML, React, or Svelte. Dyad: Prompt a React app, preview it locally, then own the files and the bugs. Compare all listed options at https://howtovibecodeit.dev/v0/alternatives. Check each option's license, hosting needs and feature limits.

Every week, more subscriptions die.

New verdicts, new prompts, the week's most-doomed apps.
One email. Unsubscribe in one click.

last week:100 Questions · KINDA1of10 · KINDA1Password · KINDA+1090 more

free forever · no scanner spam · the prompt stays on the site, the deaths come to you

$weekly: what got a verdict, what died.