PromptUI vs Runable — AI agents compared
Runable is a general AI agent platform — it runs many kinds of task, from documents and slides to research and browsing, and has been extending into growth work. PromptUI is narrower on purpose: it builds a working React or Next.js web app, checks that it actually runs, deploys it, and drafts the launch content from that same app. If you want one agent for many jobs, that breadth is the point. If the job is shipping a product, the narrower tool goes further into it.
Last reviewed: 2026-08-31
Time-sensitive competitor facts are based on current official documentation:
Key differences
- →Runable spans many task types; PromptUI does one job end to end — build a working web app, prove it runs, deploy it, and market it.
- →PromptUI publishes per-build evidence: validator, preview, runtime and visual checks, shown on the public page for a build.
- →PromptUI template starters each build a real, working app rather than producing a static document or design.
- →PromptUI does not charge for a build that fails.
PromptUI strengths
- ✓One job done fully: prompt to working app, with the checks visible before you ship.
- ✓Every starter template produces a real running app you can open, not a picture or a document.
- ✓Refunds credits automatically when a build fails.
- ✓Deploys with custom domains, then drafts launch content from the same product context.
Runable strengths
- ✓Genuine breadth: one agent covering documents, slides, research and browsing rather than a single workflow.
- ✓Large registered user base and rapid growth, with a Series A raised in August 2026.
- ✓A "Grow" direction that gives the agent its own channels for outbound work.
- ✓Strong presence across several markets, including India and Brazil.
Verdict
Choose Runable if you want one agent for many kinds of work and value breadth over depth in any single one. Choose PromptUI if the job is specifically to get a working web product live: it builds the app, shows you the checks it passed, deploys it, and drafts the first marketing content from the same context. They are not really the same product — the useful question is whether you want a general assistant or a tool that finishes one thing.
Feature comparison
| Feature | PromptUI | Runable |
|---|---|---|
| Builds a working React or Next.js web app | Live-proven | Different focusGeneral agent platform spanning many task types |
| Per-build evidence the app actually runs | Live-provenValidator, preview, runtime and visual signals per build | Needs proofVerify current behaviour before claiming a gap |
| Starter templates that produce a running app | Live-provenEach template is a build brief, and every one has its own page | Different focusLarge template gallery oriented to documents, slides and sites |
| One-click deploy with custom domain | Live-proven | Needs proof |
| Refunds credits for a failed build | Live-proven | Needs proof |
| Breadth across non-app tasks (docs, slides, research) | Not yetPromptUI is deliberately scoped to shipping web products | Live-proven |
| Build to launch-campaign loop | Shipped in codeGrowth Agent drafts from the same build context | Shipped in codeGrow agent announced August 2026 |
| Free tier to try it | Live-provenFree account with starting credits, no card | Live-proven |
"Live-proven" = confirmed working in production. "Shipped in code" = built but not yet fully deployed. "Different focus" = the product positions that workflow differently. "Needs proof" = do not treat as a hard gap without fresh evidence. "Not yet" = not available as of this writing.
FAQ
Are Runable and PromptUI the same kind of product?
Not really. Runable is a general AI agent platform covering many kinds of task. PromptUI is scoped to one: building a working web app, proving it runs, deploying it, and drafting the launch content from that same app.
Which is better if my goal is specifically to get an app live?
PromptUI is built for exactly that path, and shows you the checks the app passed before you ship it. Runable can produce a great deal more besides, which is the reason to choose it if your needs are broader.
Do PromptUI templates produce a real app?
Yes. Every template is a build brief that PromptUI runs to produce a working React or Next.js app, and each template has its own page showing the exact brief it builds from.