theo

AI your customers actually use. theo is the chat widget, automation engine, and orchestration API that ships in minutes.

Start Free See it live

1Brain

15+Models

5Channels

0Code needed

JupiterTheo's home planet↗

CHOOSE YOUR PATH

Where do you want to start?

For Companies

Ship AI your customers actually use

A branded chat widget on your site in minutes. Capture leads, route to humans, get notified everywhere, and keep an immutable record of every interaction.

Drop-in iFrame widget, no code required
Slack / email / webhook notifications
Immutable audit log for every action
Human escalation, lead capture, automations

Explore the tour

For Developers

One API. Every model. Streaming in three lines.

Route prompts across 10+ engines automatically. Skills, tools, memory, webhooks, SDKs, open-source adapters. Everything you need to build production AI, exposed as a clean API.

TypeScript SDK + OpenAI-compatible API
Agentic loop, skills, tools, streaming
Telegram / WhatsApp / REST adapters
HMAC-signed webhooks + audit trails

Explore the tour

THE AI-ON-YOUR-SITE PROBLEM

You want AI your customers actually use. What you get is a grab-bag of bots, dashboards, and Zapier tape. Theo is one system that covers it all.

4+VENDORS

SCATTERED TOOLS

Your team is stitching together a chat vendor, a CRM, a Slack bot, and a form builder. Nothing talks to each other and no one has the full picture.

1×GENERIC

OFF-BRAND AI

Every chat bot on the market looks the same. Generic personas, generic bubbles, generic answers. Nothing that feels like your company.

0VISIBILITY

FLYING BLIND

You have no idea who asked what, when, from where, or what the AI told them. No audit log. No receipts. No way to investigate later.

100%RISK

LOCKED IN

Your bot is tied to one model and one vendor. Prices go up, quality drifts, and migrating means rebuilding everything from scratch.

ONE PLATFORM.theoSOLVES ALL FOUR.

HOW IT WORKS

Every request flows through six stages. Your prompt in, the perfect engine out, automatically.

CLICK ANY STEP TO LEARN MORE

DOCS: ORCHESTRATION PIPELINE →

EMBEDDABLE CHAT WIDGET

Your AI. Your brand. Live on your site.

Build it in the dashboard, paste a single line of HTML, and Theo is live for your customers — on your brand, under your domain.

yourdomain.com

Ask Theo

Online · replies in seconds

Hey 👋 I'm Theo — your AI concierge. I can answer questions, route you to the right person, or capture your details so a human can follow up.

Can you show me a demo of the embeddable widget?

Absolutely — you're looking at one right now. Same engine powers chat on any site with a single line of HTML.

Show pricingTalk to a humanBook a demo

Type a message…

Powered bytheo

Your brandAny model, auto-routedLives on any site

paste into your site

<script
  src="https://hitheo.ai/embed/loader.js"
  data-config="your-widget-id"
  async
></script>

Build your widget See company features →

NO-CODE WIDGET BUILDER

Build it without code.

Theme, tone, logo, lead form, intent rules — point, click, ship. Everything updates live in the preview.

acme.com

Ask Acme

Typically replies in seconds

Hey 👋 I'm Ace, your Acme AI concierge. How can I help?

Type a message…

Design panelauto-saving

Brand color

#A78BFA

EDITING

Welcome message

Hey 👋 I'm Ace, your Acme AI concierge. How can I help?

Header title

Ask Acme

Position

bottom-right

Theme preset

Midnight glass

DesignContentBehaviorIntentSecurityDeploy

Open the builder →

THREE LINES TO SHIP

npm install @hitheo/sdk - then pick your use case.

OPEN SOURCE · TYPESCRIPT · FULL DOCS

DOCS: SDK REFERENCE →

your-app.ts

import { Theo } from "@hitheo/sdk";

const theo = new Theo({ apiKey: "theo_sk_..." });

const res = await theo.complete({
  prompt: "Explain quantum computing simply",
  mode: "auto",  // → routes to Theo Flash (quick chat)
});

console.log(res.text);
console.log(res.model);       // "theo-1-flash"
console.log(res.cost);        // "$0.0003"

TypeScriptStreamingTree-shakeable0 dependencies

WORKS EVERYWHERE

Same brain, same memory, same skills. Every channel. Open-source adapters.

TelegramWhatsAppREST API

BRING YOUR STACK

Next.jsExpressVercelCloudflare WorkersAWS LambdaSupabaseBunDenoNode.js

REAL-TIME EVENTS

Real-time events. Anywhere you work.

Every action in Theo fires a signed event. Route it to Slack, email, your CRM, or any of 5,000+ apps — without writing a backend.

Stream every completion with mode, tokens, and cost into your warehouse.

EVENTSomething happens

FILTERMatch your subscriptions

SIGNHMAC-SHA256

DELIVERPOST + retries

Slack / Discord

channel pings

Email alert

team inbox

Zapier / n8n / Make

5,000+ apps

delivered

Your server

signed webhook

delivered

signed payload

Theo-Webhook-Signature: v1=…

{
  "event": "completion.created",
  "mode": "fast",
  "tokens": 340,
  "costCents": 2
}

HMAC-SHA256 signedSSRF-guardedExponential retryReplay-safe timestamps

Open Webhook Relay →

DEVELOPER DASHBOARD

One dashboard for everything. Keys, usage, logs, routing config. No more switching between 4 provider consoles.

api.hitheo.ai/dashboard

Requests today

0ms

Avg latency

$0.21

Cost today

Models used

REQUEST VOLUME (24H)

LIVE REQUESTS

15:42:03Flashfast$0.001 · 120ms

15:42:01Codecode$0.042 · 1.2s

15:41:58Createimage$0.008 · 3.4s

API Keys

Create, rotate, and scope keys per environment

Usage Analytics

Per-model cost, latency, and volume breakdowns

Real-time Logs

Stream every request: model, mode, cost, duration

Routing Config

Override defaults, pin models, set cost caps

INTELLIGENT ROUTING

The right model for every message. Every time. Automatically.

Click any model to explore

Docs: Engine Routing →

WHY theo'S ROUTING IS DIFFERENT

Understands intent

Theo reads every prompt and picks the right engine in the background. No keywords, no configuration, no routing tables to maintain.

Pays attention to cost

Simple questions use fast, cheap models. Complex reasoning gets the premium ones. You save on every routine request, automatically.

Snappy by default

Most prompts classify in milliseconds. Quick answers feel instant. Long-running tasks stream so users never wonder if it froze.

Built-in failover

If one provider hiccups, Theo slides to the next. Your widget, your app, and your automations keep working. Your users never notice.

EXECUTABLE VISUAL INTELLIGENCE

WATCH IT EXECUTE

Type a prompt and watch theo decompose it into a multi-model execution chain, routed and run in real time.

TRY A MULTI-MODEL PRESET OR TYPE YOUR OWN

quickstart.ts

// The same routing happens whether you call it from your app,
// embed the widget, or type in the playground.

theo.ask({
  prompt: "Build me a video about a dog on a skateboard and roast me about it",
  mode: "auto",
});

// → Theo Code (auto)