Fusion

Fusion Helix

Build at AI speed.

A design system and codebase, built AI-native from the ground up.

import { Carousel } from "@fusion-io/helix-react";

Why Helix

Fusion Cortex

Compose your AI.

Agents, retrieval, and reasoning, composable in any stack you ship.

const agent = cortex.agent("research", { tools });

Why Cortex

Fusion Apex

Trade on your terms.

Battle-tested sub-strategies and AI sentiment. Cloud dashboard, your hardware, your broker.

apex serve --register wss://relay.apex.fusion.dev/v1/engine

Why Apex

Helix

AI-native dev tooling.

The codebase every Fusion surface inherits from.

Learn more

Cortex

The AI engine.

Composable agents, retrieval, and reasoning.

Learn more

# Fusion

AI-native platform for code and capital. Built so agents and humans read and write the same way.

## Cores

- [Helix](/products#helix): the DNA. Design system, components, codebase, infra.
- [Cortex](/products#cortex): the mind. Composable agents, retrieval, reasoning.

## Products built on Helix + Cortex

- [Apex](/products#apex): opt-in algorithmic trading, local-first, your broker

## Reading this site

Component APIs are documented in CEM. Wrappers regenerate from the manifest.

AI-native, end to end.

Code, capital, and the tooling between, every product, every page, every API designed to be read and written by agents as fluently as by humans. Including this site.

View llms.txt

Explore Fusion.

Helix

Cortex

Apex

Helix

AI-native substrate.

Cortex

The engine behind every product.

Apex

Algorithmic trading, on your terms.

Put Fusion to work.

In code. In capital. In your stack.

Development

We design and ship AI-native products on Helix. Component systems, agent integrations, full builds.

Start a conversation

Finance

Sovereign portfolio strategy with Apex. For individuals managing their own capital, not institutions.

Schedule a session

Conversational build

Tell our agent what you want. It designs, builds, and ships your site on Helix. You stay in control of the brief.

Try the agent

Alpha coming soon

Be first to build with Fusion.

Helix, Cortex, and Apex are in development. We'll ship each when it's ready, both the engineering bar and the trust bar. Write to us and we'll add you to the alpha list.

Join the alpha

The next decade of software gets built by humans and agents, together. The companies that win will be the ones that designed for both from the start.

Read the manifesto

On the record.

AI, code, capital, and the bets we're making.

Cortex

Sandboxing agentic tools.

May 17, 2026

Apex

Why Apex runs on your hardware.

May 17, 2026

Helix

Why we built Helix on Lit.

May 8, 2026

Helix

Building an AI-native component API.

May 2, 2026

Apex

What financial sovereignty actually feels like.

Apr 22, 2026

Build for both.Humans and agents, shipping the same code.

Start with Helix

Join the alpha

# Fusion AI-native platform for code and capital. Built so agents and humans read and write the same way. ## Cores - [Helix](/products#helix): the DNA. Design system, components, codebase, infra. - [Cortex](/products#cortex): the mind. Composable agents, retrieval, reasoning. ## Products built on Helix + Cortex - [Apex](/products#apex): opt-in algorithmic trading, local-first, your broker ## Reading this site Component APIs are documented in CEM. Wrappers regenerate from the manifest.