StackBlitz overview: products, pricing, and alternatives
Author
Aanchal Tiwari
Date Published
Reading Time
5 min read
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StackBlitz, the company behind Bolt.new, is a San Francisco developer-tools company that lets people build web apps inside a browser tab, now mostly by describing them in chat. It started with a coding environment and makes most of its money from Bolt. Product managers, founders, marketers, and agencies are among its users.
StackBlitz at a glance
Field | Value |
Founded | 2017 |
Headquarters | San Francisco, California, USA |
Founder / CEO | Eric Simons (co-founder and CEO); Albert Pai (co-founder) |
Ownership | Independent, private, venture-backed |
Funding raised | About $135M total, including a Series B of about $105M in January 2025 |
Category | |
Flagship product | Bolt.new |
Starting price | Bolt.new Pro, $25/month billed monthly |
Free plan | Yes |
Website | https://stackblitz.com (company); https://bolt.new (flagship) |
What is StackBlitz?
StackBlitz tackles local setup in web development. Its WebContainers technology runs Node.js inside the browser tab instead of on remote servers, and both its main products run on it. Bolt.new adds a chat layer, turning a plain description into working code, hosting, and a database. Bolt launched on October 3, 2024, after the company had come close to shutting down.
StackBlitz products
- Bolt.new: AI builder that turns chat prompts into websites and apps, with Standard and Max agents.
- Bolt Cloud: hosting, databases, auth, analytics, and custom domains for Bolt projects.
- Bolt Forge: agent on open-weight models, in research preview until October 14, 2026.
- Bolt security review: reviews and patches apps before publishing, at no extra cost.
- StackBlitz browser IDE: collaborative in-browser coding, with a free Personal plan and paid Teams.
- Codeflow: one-click in-browser IDE for repos, issues, and pull requests.
- Web Publisher: lets non-technical contributors edit docs in the browser and open a pull request.
- Enterprise Server: self-hosted StackBlitz on one Kubernetes instance, with SAML2 SSO.
- WebContainer API: embeds a Node.js runtime in other web apps; commercial use needs a plan or license.
StackBlitz pricing
Bolt.new starts at $25 a month on Pro, billed monthly, and a free tier sits below it. Bolt charges in AI tokens: the free plan caps use at 300K tokens a day and 1M a month, while Pro starts at 10M a month. Larger projects burn tokens faster, since Bolt syncs the project's file system to the AI each message. Verify current prices at bolt.new/pricing (checked October 6, 2026).
Data, privacy, and safety
Yes. From October 7, 2026, Bolt trains models on content from individual accounts outside the EEA, UK, and Switzerland, and may license de-identified datasets, unless the user opts out in settings. Teams and Enterprise accounts are excluded, and opt-out is not retroactive.
Certifications: SOC 2 Type 2; GDPR; CCPA. ISO 27001 and HIPAA: Not publicly specified.
No confirmed breach was found for StackBlitz or Bolt.new.
Who's behind StackBlitz and how stable it is
StackBlitz is well funded and shipping actively, most recently announcing its first acquisition, Dokai, on September 29, 2026. Eric Simons is co-founder and CEO, and Albert Pai is co-founder. The company is independent and venture-backed, with about $135M raised in total, including a Series B of about $105M in January 2025 led by Emergence Capital and GV at a reported $700M valuation. No 2026 funding round was found.
StackBlitz strengths and limitations
Strengths
- G2 reviewers, including a QA engineer and an agency PM, describe going from idea to clickable prototype in hours.
- Imports Figma designs, pushes to GitHub, and bundles hosting, database, and auth through Bolt Cloud.
- SOC 2 Type 2 appears on its Trust profile, and Teams and Enterprise accounts are excluded from model training.
- Self-hosted Enterprise Server runs on a single Kubernetes instance with SAML2 SSO.
Limitations
- Trustpilot and G2 reviewers report tokens draining on error loops, with Bolt rewriting whole files to fix bugs.
- Teams building large production apps on a fixed budget should look elsewhere: G2 reviewers call Bolt a prototyping tool.
- Trustpilot's Bolt.new page shows 1.6/5 from 203 reviews (October 6, 2026), citing slow support and one account ban without file export.
- Individuals with client code or confidential IP should opt out, since training applies from October 7, 2026; Teams accounts are excluded.
StackBlitz alternatives
Lovable is StackBlitz's closest rival, with Replit, v0, and Base44 competing on different terms. StackBlitz's WebContainers technology runs the whole Node.js development environment inside the user's browser tab, while Lovable, Replit, v0, and Base44 center on their own cloud backends and hosting.
Company | What they do | Best for | Entry price | Key difference vs StackBlitz |
StackBlitz (Bolt.new) | AI app and website builder driven by chat, plus a browser IDE, both on WebContainers | Product managers, founders, marketers, agencies | Pro, $25/month billed monthly | n/a |
Lovable | AI app builder; one credit balance covers building, chat, hosting, and its Cloud backend | Individuals and teams building apps, internal tools, prototypes | Pro, $25/month billed monthly; $21/month billed annually | Free plan excludes code editing and download, and caps build credits at 30 a month |
Replit | AI platform that creates apps, sites, designs, and slides from natural language, with agents, databases, and deployment | Founders through engineers who want building and running in one place | Core, $20/month; $18/month billed annually | Plans jump from Core $20 to Pro $100, and agent use has effort-based pay-as-you-go billing |
v0 (by Vercel) | Collaborative AI assistant for building full-stack web apps; deploys to Vercel and syncs with GitHub | Teams already in the Vercel ecosystem | Free $0; Plus, $30 per user per month | Per-seat pricing, and training opt-out is on by default only from the $100 per user Business plan |
Base44 (Wix) | No-code AI platform with built-in database, auth, and hosting | Non-developers building internal tools and simple apps | Starter, $16/month billed annually | GitHub integration starts at Builder, $40/month billed annually; Starter lacks it |
Frequently Asked Questions
Is Bolt.new safe to use?▾
How do I opt out of Bolt model training?▾
What is the difference between StackBlitz and Bolt.new?▾
Does StackBlitz support Python or Java?▾
Is StackBlitz free?▾
Written by
Aanchal Tiwari
Aanchal Tiwari is an AI tools reviewer and content writer with 3 years of experience breaking down software platforms, pricing models, and product capabilities. A B.Com graduate from SPM College (Delhi University) with a diploma in office management, she brings a structured, detail-first approach to every company overview she publishes at FirmBees. Her process starts with a real walkthrough of the product and its fine print, so readers know exactly what they are paying for before they commit.
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