A week and a half ago we launched Fast Deep Research. Today, we’re bringing that same speed to software development with Fast Deep Coder—a deep‑coding agent that runs large models on Cerebras hardware and executes inside its own secure cloud VM. The result is simple to feel: build, run, fix, and ship at 5–10× faster iteration loops, without losing your train of thought or touching your local setup.
What Fast Deep Coder Is
Fast Deep Coder pairs Cerebras high-speed inference with a fully managed development environment. The agent plans work, writes code, runs it in the VM, inspects logs, tests, and replans when needed. You can jump in at any moment—open the workspace in VS Code, steer the plan, or just watch results stream in—without ever wrestling with dependencies on your laptop.
Because the environment lives in the cloud, everything is ready the instant you start: VS Code and common dev tools are pre‑configured, networked services spin up reliably, and context persists across sessions. And when you’re done, the whole session can be captured as a pull request and pushed to your GitHub repo.
Why This Matters
Speed for iteration. When a coding loop takes a minute or two instead of ten or fifteen, you stay in flow. You try more ideas, give tighter feedback, and evolve designs while the context is still fresh. Vibe coding just flies.
Zero setup, zero drift. No more hours lost to extensions, compilers, or toolchain mismatches. The agent’s VM starts clean, stays consistent, and is ready for both the agent and you.
Your laptop, unblocked. Heavy builds, servers, and tests run in the cloud VM, so your machine stays responsive for meetings, docs, or parallel tasks.
Security by isolation. Code executes inside an isolated VM boundary—secrets, processes, and files are contained, not interleaved with your local environment.
GitHub, built in. Authenticate once and work the way teams already ship: branch safely, commit, open a PR, and push—directly from Fast Deep Coder.
A Quick Example: A Mini Web OS in an Afternoon
Give Fast Deep Coder this brief: “Build a browser‑based Web OS with five apps—Files, Notes, Calculator, Mortgage Calculator, and Settings—with a Ninja‑themed desktop background.”
The agent responds with a plan, scaffolds a project, and stands up a shell with a desktop, windowing, and routing. It implements a standard Calculator and a Mortgage Calculator (principal, interest, term, amortization, and monthly payment breakdown), adds lightweight Files and Notes with JSON persistence (swappable for APIs later), and a Settings panel that toggles themes—including the Ninja desktop.
You watch builds and tests run live in the VM, nudge UI details or logic, and ask for refinements—without waiting ten‑minute cycles. When it looks right, the agent commits the work and opens a pull request to your repo.
How It Works
For inference, we use Qwen3 Coder 480B on Cerebras for the plan‑code‑validate loop. Cerebras’ high speed inference runs code-gen at 2,000 tokens/s, letting the agent think more and wait less. On the execution side, a dedicated cloud VM runs editors, shells, servers, and test suites with full observability. Because project state and logs live with the VM, context sticks between iterations instead of evaporating between runs.
Security is a first‑principles choice: the agent’s environment is isolated from your local machine. Secrets are scoped to the VM, and you can choose ephemeral VMs for short bursts or long‑lived ones for sustained projects. And with first‑class GitHub integration, shipping is a natural part of the loop.
Accuracy
We evaluated Fast Deep Coder (Qwen3‑480B) at 69.6% on SWE-bench verified at 500 iterations. This is on par with Sonnet 3.7 (70.3%) and ahead of Gemini 2.5 Pro (63.2%)—so you get a major increase in speed without sacrificing accuracy.
Getting Started
Open Super Ninja → Fast Deep Coder, connect a GitHub repo if you want to PR your work, and describe your goal (or paste an issue). The first plan and build completes in minutes; you iterate by chatting or opening the workspace in VS Code to make direct edits. That’s it.
Ready to move faster? Try Fast Deep Coder today.
