Deployment directly to the Internet Computer blockchain
App Market for browsing and remixing published apps
Tabbed interface switching between spec, code, and product views
On-chain hosting for every generated application
Pros
Immediate in-browser execution shows a real, running app, not just code
Built on proven WebContainer technology from StackBlitz
Tight feedback loop between prompting and seeing results
Backed by the DFINITY Foundation's existing blockchain infrastructure and multi-year Internet Computer track record
Generates smart contracts alongside conventional frontend/backend code, unusual among AI app builders
App Market lets builders start from existing apps instead of a blank chat
Cons
In-browser execution has limits compared to a full server environment
Free tier's monthly usage cap is limiting for regular use
Best suited to web app prototypes rather than deeply custom backend systems
Deployment is tied to the Internet Computer blockchain, an unfamiliar and less battle-tested foundation than conventional cloud hosting for most business buyers
Credit allowances on lower tiers (10-20/month) are modest for anyone building more than a small project
Category association with crypto/blockchain may deter buyers who want a conventional no-code app builder without the blockchain layer
Company
StackBlitz, founded 2024
Caffeine Labs, founded 2023
Prices come from each vendor's pricing page, last checked 20260718. Check the vendor before you buy.
FAQ
Questions people ask
Is Bolt.new better than Caffeine?
In our reviews Bolt.new scores 4.3 and Caffeine scores 3.8. The better pick depends on the job. Bolt.new: Builds and runs a full app live in the browser, no server needed. Caffeine: Generates full-stack applications, including smart contracts, from a chat conversation and deploys them on the Internet Computer blockchain.
Which is cheaper, Bolt.new or Caffeine?
Caffeine has the lower starting price: from $18/mo for Bolt.new and from $5/mo for Caffeine.
Caffeine
Bolt.new
