Skip to content
Download WholeStack Explore the technology
Have an idea? Start here

Software shouldn’t have to guess what you mean.

Prompts decay. Every handoff loses what you meant.

  1. An idea100%
  2. A prompt64%
  3. The code34%
  4. A change12%

Carry the intent from first word to final release.

Human intent. Machine precision.

ISL turns plain words into a living specification the compiler and verifier both obey.

Discover ISL

Words

“Clients book a chair. A booking moves from requested to confirmed, then completed or cancelled. Only the client who made it can see it.”

ISL

entity Appointment {  ownerId: UUID [references: "User.id"]  status: AppointmentStatus [default: "REQUESTED"]  lifecycle {    REQUESTED -> CONFIRMED    CONFIRMED -> COMPLETED    CONFIRMED -> CANCELLED  }} policy per_owner_appointment {  applies_to: Appointment  rules { row.ownerId == ctx.userId: allow  default: deny }}

Proof

  • Starts as requested
  • Cancelled and completed are final
  • Cannot skip confirmation
  • Other clients are refused
Words.Specification.Executable proof.

An AI that doesn’t just answer. It builds.

Zeta holds your spec, your source files, and your verification state in one shared context.

Think together.

Shape rules before writing code.

Build together.

Change a screen or workflow in place.

Evolve together.

Revise the spec as the business grows.

Generating software is easy. Trusting it is the hard part.

Meet ShipGate
  • A clean interface isn’t permission checks.
  • A green build isn’t a working workflow.
  • A confident reply isn’t an executed test.

ShipGate runs the real application and records what passed, failed, or never ran.

Example report · booking appIllustrative
  1. Pages/bookings responds for a signed-in clientPassed
  2. PermissionsAnother client is refused when cancelling this bookingPassed
  3. WorkflowRequested → Confirmed → CompletedFailed
  4. WorkflowRefund after a cancellationNot run

A missing test is not a successful test.

Build it your way.

  • Default

    Conversation

    Say what you want in plain language.

  • Direct

    Live Sculpt

    Point at the running preview and edit in place.

  • Optional

    Spatial

    Step into your project on an open stage.

  • Optional

    Voice & hands

    Speak or gesture when the keyboard is in the way.

The numbers.

From our own benchmark runs. The sample size and date are on every line.

  1. 30/30

    change requests passed ShipGate, our release check, on the rebuilt app.

    $0.023 each on average. 28 seconds median.

    Agent bake-off · 3 tasks × 10 runs · gpt-oss-120b on Cerebras · 2026-10-14

  2. 0of 455

    requirements silently dropped, across 30 businesses it had never seen.

    449 went into the spec. The other 6 were flagged as unsupported, not hidden.

    Unseen-software gauntlet · 30 briefs written before the first run · 2026-10-07

  3. 71%

    lower cost to change an app through its spec than with a direct coding agent.

    $0.055 against $0.190 per change. Both passed all 53 checks, every run.

    ShopDesk head-to-head · 3 runs per arm · gpt-5.6-sol · 2026-10-10

Our own runs on our own workloads, not third-party results. The bake-off counts ShipGate verdicts; an independent runtime judge has not been run on it yet.

Pricing

One subscription.Everything you build.

Every plan includes monthly AI credits and a hosted production app.

Starter

One builder, idea to live.

$49/ month
Billed monthly
  • $25 monthly AI credits
  • 1 workspace seat
  • 1 hosted app included
Download WholeStack
ProRecommended

Small teams shipping together.

$99/ month
Billed monthly
  • $50 monthly AI credits
  • 3 workspace seats
  • 1 hosted app included
  • Live collaboration
Download WholeStack
Ultra

Larger teams with full policy control.

$229/ month
Billed monthly
  • $90 monthly AI credits
  • 10 workspace seats
  • 1 hosted app included
  • Live collaboration
  • Advanced Volition policies
Download WholeStack

Extra hosted apps $69/mo. Credit top-ups of $10, $25, $50.

Full pricing

Questions

Do I need to know how to code?

No. Describe the business in plain language; developers can still inspect and edit every generated file.

How is this different from a prompt builder?

Prompts vanish after generation. ISL keeps your rules structured, ShipGate tests the running app, and Volition governs protected actions.

Does ShipGate guarantee zero bugs?

No tool can. ShipGate shows exactly what passed, what failed, and what has not been run yet.

Do I own the code?

Yes. WholeStack writes real project files and source code directly to your machine.

Are voice and spatial controls required?

No. They are optional. Everything works in the standard desktop workspace.

Do I have to host with WholeStack?

No. Building and hosting are separate decisions.

Describe the business.

Download WholeStack Have an idea? Start here

Every line around the button is from one of the 30 briefs in the unseen-software benchmark.

Watch it work.

Product film · 2:36 · Sound on