Syzygy

What is Syzygy?

Syzygy builds compact open models and Mach Studio, a Mac desktop app that runs them entirely on your machine. The local agent can read and draft across Slack, Gmail, Notion, and your browser, run scheduled jobs, and power coding tools like Codex. No account, API key, or cloud connection is needed to start.

Top Features:

• Mach models: a 35B mixture-of-experts model that runs on 16 GB Macs.
• Computer use: the agent scrolls, types, and clicks through browser tasks for you.
• Automations: recurring jobs like inbox triage and daily digests run on timers.

Use Cases:

• Private documents: draft and review sensitive files without sending data to the cloud.
• Status reports: schedule the agent to gather updates and write a morning summary.
• Local coding: run Codex, Claude Code, or OpenCode on models inside your Mac.

Who Can Use Syzygy?

• Privacy-minded teams: lawyers, consultants, and analysts who keep client data off cloud tools.
• Developers: engineers who want coding agents on local models without API bills.
• Power users: people with Apple Silicon machines who want an offline AI coworker.

Pricing

• Free ($0): local models through Mach, MLX, and llama.cpp with your own keys.
• Usage Based (pay as you go): everything in Free plus managed cloud inference billed per token.
• Pro ($20 per month): $20 inference credits, 150+ hosted integrations, remote control, and automations.

Pros and Cons

Pros:

• Offline: models run on your Mac with no account, key, or internet.
• Permissions: set allow, ask, or block rules for each tool and app.
• Efficiency: vendor tests show the 35B model keeps 96 percent of teacher quality.

Cons:

• Beta software: the app is still in beta, so expect rough edges.
• Mac only: there is no version for Windows, Linux, or Intel Macs.
• Pro-only extras: hosted integrations, remote control, and automations need the paid plan.

FAQs:

1) Do I need an account?

No, the free plan runs local models without an account or API key.

2) Which Macs can run it?

Any Apple Silicon Mac works, and the flagship model needs 16 GB or more.

3) Does it work with coding agents?

Yes, Codex, Claude Code, OpenCode, and Hermes Agent can use its local models.

4) Can it act on my computer?

Yes, it can click, type, and scroll in your browser with permission controls.

5) How much is Pro?

Pro costs $20 a month and includes $20 of hosted inference credits.