Boltvsv0
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Bolt
StackBlitz · Web app builder
#159MCP
Panel
4.91 spec wins
- Reliability
- 4.5
- Usefulness
- 5.3
- Cost
- 4.3
- Longevity
- 5.5
“Open source until December 2024, metered ever since, and the meter mostly counts uploading your own files to the model.”
v0
Vercel · Web app builder
#80MCP
Panel
6.03 spec wins
- Reliability
- 5.7
- Usefulness
- 6.0
- Cost
- 5.3
- Longevity
- 7.2
“Training opt-out starts at $100 per user per month, which is one way to put a price on privacy.”
Spec by spec
| Spec | Bolt | v0 |
|---|---|---|
| Architecture | ||
| Category | Web app builder | Web app builder |
| Runs | sandbox, cloud | cloud, sandbox |
| Platforms | web | web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | Yes | Yes |
| Browser control | NoNo browser-driving or app-testing agent is documented; Standard and Max differ only in how much the agent reasons per step (https://support.bolt.new/building/using-bolt/agents.md). | YesBeyond live web search, v0 opens the apps it builds, uses them, critiques designs, debugs flows and visits external URLs, sending you screenshots of what it sees. |
| Sandboxed execution | Yes"Bolt relies on WebContainers, a browser-based runtime from StackBlitz that enables a full-stack development environment in the browser" — an in-browser VM, not a container you manage. | Yes"Every action runs inside an isolated sandbox" — v0 uses Vercel Sandbox, a lightweight virtual machine that runs the app in an isolated environment (https://v0.app/docs/faqs). |
| Multi-agent orchestration | No | No |
| Headless / CI mode | No | Yes |
| Models | ||
| Backbone | Claude | v0 Mini, v0 Pro, v0 Max, v0 Max Fast |
| Bring your own model | No"Bolt handles model selection behind the scenes" — no model or provider picker, custom endpoint or key. | NoThe picker only offers Vercel's own v0 Mini/Pro/Max tiers, and the Platform API runs v0's agent with a v0 key — there is no custom endpoint, gateway or cloud deployment to point it at. |
| Local models | No | No |
| Cost | ||
| Pricing model | subscription | mixed |
| Starts at | $25/mo | $30/mo |
| Free tier | Yes | Yes |
| Bring your own key | No | No |
| Openness | ||
| Open source | No | No |
| License | proprietary | proprietary |
| GitHub stars | 16,569 | n/a |
Which one would each critic pick
| Critic | Bolt | v0 | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 5.5 | 6.8 | v0 — Use v0 if you ship Next.js on Vercel and want UI and full-stack scaffolding that lands in a GitHub branch, and know that training opt-out costs $100 a user and the models are Vercel's own black boxes. |
| El Crítico | 4.8 | 6.0 | v0 — v0 bills per token on composite models with no published methodology, charges $50 per million output tokens at the top tier, and sells the training opt-out as a $100-a-seat feature. |
| El Profesor | 4.8 | 5.5 | v0 — v0 asserts composite models and documents a sandbox, browser use and error fixing; the composition is undisclosed, no benchmark exists, and the Platform API is the only fully legible surface. |
| La Inversora | 6.0 | 8.3 | v0 — v0 is a funnel into Vercel deploys with Next.js as the distribution, and a $30 plan that includes exactly $30 of credits tells you the subscription is the margin. |
| La Jefa | 5.0 | 6.0 | v0 — Training opt-out at $100 a user and SAML only on a custom Enterprise contract, for a tool that helps the frontend team and nobody else; approved with conditions. |
| El Hacker | 3.5 | 3.8 | v0 — Vercel's composite models, no key of my own, no local anything; the MCP server, the sandboxed terminal in Full mode and the SDK are the handles, and they are decent handles. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.