BoltvsEmergent
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
4.92 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.”
Emergent
Emergent · Web app builder
#161MCP
Panel
5.13 spec wins
- Reliability
- 4.5
- Usefulness
- 5.7
- Cost
- 4.7
- Longevity
- 5.7
“Promises no DevOps hassle, then bills in credits, which is DevOps hassle with a nicer font.”
Spec by spec
| Spec | Bolt | Emergent |
|---|---|---|
| Architecture | ||
| Category | Web app builder | Web app builder |
| Runs | sandbox, cloud | cloud |
| Platforms | web | web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | No |
| 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). | Yes |
| 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. | No |
| Multi-agent orchestration | No | Yes |
| Headless / CI mode | No | No |
| Models | ||
| Backbone | Claude | Claude, GPT, Gemini |
| Bring your own model | No"Bolt handles model selection behind the scenes" — no model or provider picker, custom endpoint or key. | No |
| Local models | No | No |
| Cost | ||
| Pricing model | subscription | subscription |
| Starts at | $25/mo | $17/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 | Emergent | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 5.5 | 5.8 | Emergent — Pick Emergent if you want a mobile app as well as a web one from the same chat; pick Lovable if the browser is the only target you care about. |
| El Crítico | 4.8 | 5.3 | Emergent — The help center calls it the world's first truly agentic vibe coding platform, a claim with no methodology, and the safety net for a bad deploy is a rollback button. |
| El Profesor | 4.8 | 5.3 | Emergent — The pipeline is design, build, test, deploy with a Pre-Deployment Health Check as the gate, and custom agents with sub-agents; no benchmark, no methodology for the test step. |
| La Inversora | 6.0 | 6.0 | no preference |
| La Jefa | 5.0 | 4.5 | Bolt — JavaScript only, no headless mode, enterprise on request, and a meter that grows with repository size; a demo tool for the design team, not yet for engineering. |
| El Hacker | 3.5 | 4.0 | Emergent — Proprietary, no key, no local model; the universal key wires an LLM into the app it builds, and MCP works two ways, built-in connectors and external servers, which is the entire surface I get. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.