Backend boilerplate is the tax you stop paying today

From Prompt Chain to Production REST API in 60 Seconds

Skip backend boilerplate. Chain LLMs, enforce strict JSON schemas, and deploy scalable edge endpoints with sub-50ms middleware overhead — or export clean code to self-host.

No credit card · Free tier forever · Join 1,200+ engineers on the beta.

summarize.endpoint.ts

// deployed at edge — call it like any REST API
const res = await fetch("https://api.instant.dev/v1/summarize", {
  method: "POST",
  headers: { "Authorization": `Bearer ${key}` },
  body: JSON.stringify({ url })
});
const data = await res.json(); // ✓ Zod-validated

The choice

Two ways to ship AI features. One of them wakes you at 2am.

Building AI backends yourself

✕Fragile JSON parsing
✕Model downtime = your outage
✕Custom retry queues
✕No cost visibility
✕Weeks of glue code

Building with Instant API

✓Guaranteed Zod / JSON schemas
✓Multi-model auto-failover
✓One-click edge deploy
✓Per-token cost logging
✓60-second setup

What's under the hood

Everything the boilerplate was supposed to do — done for you.

Real-Time Observability & Token Cost Logging

Per-endpoint latency and dollar cost per call, live. No guessing what your AI features actually cost in production — watch every token as it burns.

Visual & Code Workflow Canvas

Design prompt chains visually, get versioned TypeScript out. What you draw is what deploys — no drift between diagram and runtime.

Guaranteed Output Schemas & Type Safety

Enforce Zod / JSON schemas at the edge. Invalid model output never reaches production — it retries or fails loud, never silently corrupts.

Multi-Model Routing & Failover

Automatic OpenAI ↔ Anthropic failover with sub-second reroute on model downtime. Their outage stops being your outage.

<35ms

measured middleware overhead

99.98%

failover uptime

1 cmd

to deploy

// This is the whole integration. No SDK lock-in.

call-endpoint.ts

const r = await fetch("https://api.instant.dev/v1/extract", {
  method: "POST",
  body: JSON.stringify({ text })
});

const invoice = await r.json();
// ✓ shape guaranteed — no defensive parsing
{
  "vendor": "Verdant Co",
  "total": 4820.00,
  "currency": "USD",
  "line_items": [ 3 items ]
}

Ships with the guardrails

Enterprise-ready before you asked.

SOC 2 Type II

Audited controls, continuous compliance.

BYOK

Bring your own API keys — we never store them.

VPC & Local Self-Host

Run entirely inside your own network.

Git-Backed CI/CD

Versioning, review, rollback — all in Git.

Trusted by engineering teams at 40+ early-access companies

“Replaced 900 lines of retry/queue glue with one deploy. Failover just works.”

Kaito Mendez · Staff Backend Engineer, Verdant

“Schema guarantees killed our 2am JSON-parse pages. Cost logging paid for itself in a week.”

Priya Raman · CTO, Lumen Labs

<35ms overhead

measured across 4.1M production calls

Transparent beta pricing

Early-access pricing is locked for beta signups. Free tier stays free, forever.

Free

Deploy your first API. No card.

✓ Free tier forever
✓ Schema validation
✓ Edge deploy
✓ Code export

Beta price locked

Pro

$49/mo

Early-access price, locked for beta signups.

✓ Unlimited endpoints
✓ Priority failover
✓ Full observability
✓ Per-token cost logs

Enterprise

Custom

For teams with security requirements.

✓ BYOK
✓ VPC / self-host
✓ SOC 2 Type II
✓ Dedicated support

The questions your team will actually ask.

What's the real latency cost? +

<35ms measured middleware overhead per call, across 4.1M production requests. Your model's response time dominates — our layer is negligible.

Am I locked in? +

One-click export to clean TypeScript or Python — self-host anywhere, with no runtime dependency on us. Leave whenever you want, take the code.

Can I use my own models? +

Yes. Bring vLLM, Ollama, or any OpenAI-compatible endpoint. Route between hosted and self-hosted models in the same chain.

What about our data & keys? +

BYOK so we never touch your keys. SOC 2 Type II audited, with VPC deployment for teams that need everything inside their own perimeter.