Bolt.new by StackBlitz pioneered browser-based AI app generation with WebContainers. It runs a real Node.js environment in your browser tab, which means zero setup and fast iteration for React web apps. VULK takes a different approach — server-side rendering, 8 platform targets, and frontier AI models you choose from. Both tools generate full-stack code from natural language, but they made very different architectural bets.
Compare · Bolt
VULK vs Bolt
Both build apps from prompts. VULK ships across 8 platforms — Bolt focuses on web.
Last verified 2026-04-30
Short answer
Choose Bolt if you want fast React prototyping in the browser with zero setup. Choose VULK if you need Flutter mobile apps, Shopify themes, PHP/Laravel, or want to pick from frontier AI models. Bolt is faster for simple web apps; VULK handles more complex, multi-platform projects.
Feature-by-feature
Starting Price
- VULK
- EUR 19.99/mo (Builder) — all frontier models, full power
- Bolt
- $25/mo (free tier available)
AI Models
- VULK
- Frontier models (Claude Opus 4.8, GPT-5.5, Gemini 3.1, Grok, DeepSeek, Llama)
- Bolt
- Multiple (Claude, GPT, Gemini)
BYOK (Bring Your Own Key)
- VULK
- Yes — use your own API keys (Pro+)
- Bolt
- No
Flutter Mobile Apps
- VULK
- Yes — server-side APK + iOS builds
- Bolt
- Code generation only, no build/preview
React Native
- VULK
- Yes
- Bolt
- Code generation only
Shopify Themes
- VULK
- Yes — Liquid, Hydrogen, Apps
- Bolt
- No
PHP / Laravel
- VULK
- Yes
- Bolt
- No
2D/3D Games
- VULK
- Canvas + Three.js
- Bolt
- No dedicated pipeline
Backend / Database
- VULK
- PostgreSQL + Auth + REST API
- Bolt
- Supabase integration
Preview Technology
- VULK
- Server-side (works on Safari + mobile)
- Bolt
- WebContainers (browser-based, issues on Safari)
Figma Import
- VULK
- Yes
- Bolt
- Yes
Voice Input
- VULK
- Yes — describe by talking
- Bolt
- No
Web-to-Flutter Converter
- VULK
- Yes
- Bolt
- No
Deployment
- VULK
- Cloudflare Pages + custom domains
- Bolt
- Netlify + custom domains
Code Export
- VULK
- ZIP download + GitHub push
- Bolt
- ZIP download + GitHub
Hosting Region
- VULK
- EU (Germany)
- Bolt
- US
| Feature | VULK | Bolt |
|---|---|---|
| Starting Price | EUR 19.99/mo (Builder) — all frontier models, full power | $25/mo (free tier available) |
| AI Models | Frontier models (Claude Opus 4.8, GPT-5.5, Gemini 3.1, Grok, DeepSeek, Llama) | Multiple (Claude, GPT, Gemini) |
| BYOK (Bring Your Own Key) | Yes — use your own API keys (Pro+) | No |
| Flutter Mobile Apps | Yes — server-side APK + iOS builds | Code generation only, no build/preview |
| React Native | Yes | Code generation only |
| Shopify Themes | Yes — Liquid, Hydrogen, Apps | No |
| PHP / Laravel | Yes | No |
| 2D/3D Games | Canvas + Three.js | No dedicated pipeline |
| Backend / Database | PostgreSQL + Auth + REST API | Supabase integration |
| Preview Technology | Server-side (works on Safari + mobile) | WebContainers (browser-based, issues on Safari) |
| Figma Import | Yes | Yes |
| Voice Input | Yes — describe by talking | No |
| Web-to-Flutter Converter | Yes | No |
| Deployment | Cloudflare Pages + custom domains | Netlify + custom domains |
| Code Export | ZIP download + GitHub push | ZIP download + GitHub |
| Hosting Region | EU (Germany) | US |
Where VULK wins
- + 8 platform targets vs web-only — Flutter, Shopify, PHP/Laravel, Three.js games
- + Frontier AI models with BYOK — Bolt has fewer models and no BYOK option
- + Server-side preview works on every browser including Safari and mobile devices
- + Real Flutter APK and iOS builds — not just code generation
- + Voice input and Web-to-Flutter AI converter — unique features
- + EU-hosted with encrypted data (GDPR compliance)
Where Bolt wins
- + Free tier with 1M tokens/month — VULK is paid-only (no free build); building starts with a paid plan, cheapest via the 3-day intro (Builder €3.99 for 3 days, then €19.99/mo)
- + WebContainers mean zero setup, everything runs in the browser instantly
- + Faster iteration for simple React/Node.js prototypes
- + Larger community and more third-party tutorials available
FAQ
Is VULK better than Bolt?
It depends on your needs. VULK supports 8 platform targets (Flutter, Shopify, PHP, games, etc.) and frontier AI models with BYOK, while Bolt focuses on fast React web prototyping with WebContainers. VULK is better for multi-platform projects; Bolt is faster for simple web apps.
How does VULK pricing compare to Bolt?
VULK has a free tier (first generation + one edit free on Gemini 3.1 Pro, no card needed — just verify your email); paid plans start at €19.99/mo (Builder). Pro is EUR 39.99/mo. Bolt offers a free tier with 1M tokens/month and a paid plan at $25/month. Both have a free option; VULK offers more platforms and models at a lower paid price.
Can I migrate from Bolt to VULK?
Yes. Export your Bolt project as a ZIP, then import or recreate it in VULK. Since both generate standard React code, your components and logic transfer directly. VULK can also generate backends and mobile versions from the same codebase.
Does VULK support WebContainers like Bolt?
No. VULK uses server-side preview rendering, which works on all browsers including Safari and mobile devices. Bolt uses WebContainers that run Node.js in the browser, which can have compatibility issues on some browsers.
Which AI models can I use in VULK vs Bolt?
VULK offers frontier models including Claude Opus 4.8, GPT-5.5, Gemini 3.1, Grok, DeepSeek, and Llama — you choose per generation. VULK also supports BYOK (Bring Your Own Key, Pro+). Bolt offers multiple models but does not support BYOK.
The verdict
Choose Bolt if you want fast React prototyping in the browser with zero setup. Choose VULK if you need Flutter mobile apps, Shopify themes, PHP/Laravel, or want to pick from frontier AI models. Bolt is faster for simple web apps; VULK handles more complex, multi-platform projects.
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