Welcome to Syntax

Syntax is your Fully Managed, Privately Owned, General-Purpose AI Factory.

Syntax serves as a universal backend for AI that allows you to immediately deploy both proprietary and open-source models. Through Syntax, you can automatically deploy open models to your existing cloud instances, or let Syntax auto-provision the necessary infrastructure. This auto-provisioning takes place on a unified, secure, and private managed account fully owned by you, spanning dozens of public cloud providers via dUX, our fully-featured compute resources orchestrator.

Take full control over which providers and regions to use. You can implement custom per-user budget controls and IAM rules, integrate your own secrets-management tool to ensure privacy, and monitor your deployments and costs across multiple providers from a single control plane.

The platform supports a rapidly expanding catalog, includes frontier-class and lightweight LLMs, alongside models for Visual Understanding, Image/Video/Audio Generation, Search & Embeddings, Time-Series, 3D, Safety & Guardrails, and much more.

Syntax features its own Codex-based syntax-cli coding harness, which supports a unique "Models Party" configuration. Additionally, it seamlessly connects and deploys OSS models for use with third-party environments like OpenAI's Codex, Claude Code, Pi, and OpenCode.

Choose any model from the catalog, including cutting-edge OSS models, deploy it with a single click, connect your preferred coding harness via a simple CLI command, and start building.

You can also sign in with your OpenAI Plus/Pro subscription to deploy OpenAI models alongside your OSS stack, ensuring optimal token utilization across simple, everyday, and highly complex tasks.

Security and Isolation

Neither Syntax nor dUX will ever access your machines, data, logs, files, or code. Furthermore, by integrating dUX with your private secrets manager, you establish a technical guarantee that we cannot access any of your resources under any circumstances. Additionally, enterprise customers are automatically deployed as fully isolated tenants, ensuring complete infrastructure separation from all other dUX or Syntax clients.

Documentation Overview

• Introduction — What Syntax is and how it works.
• Getting Started — Installation guides for macOS, Linux, and Windows; first launch instructions; and connecting your first harness.
• Harnesses — Supported coding assistants and how to point them toward Syntax.
• Inference — Local (GPU/CPU/Apple Silicon), remote self-hosted, and managed remote inference via dUX.
• Models — Supported model categories, modalities, reasoning capabilities, tool use, and licensing.
• Concepts — Party Builder, Plan Mode, Agent Handoff, Runtime Modes, Memory, Exposed Endpoints, and Observability.
• Syntax × dUX — How Syntax integrates with dUX for managed remote inference.
• CLI Reference — The two binaries — syntax (the application command) and syntax-cli (the bundled coding harness) — and their user-visible flags.
• Differentiators — Why engineering teams choose Syntax.

For AI agents

Every page in this wiki is also available as raw Markdown:

• The full corpus is available at /llms-full.txt.
• A short index is available at /llms.txt.
• Each page exposes a Markdown source via /api/mdx/<slug>.
• A JSON sitemap of all pages is available at /api/sitemap.json.