Lesson 10 · DeepSeek Mastery Pro+ ~14 min read Updated June 2026

Run it yourself: what open weights really get you.

DeepSeek publishes its model weights, so you can run it on your own hardware. That unlocks privacy and control — at the cost of real engineering. Here is the honest trade-off.

01What "open-weight" actually means

You can download and run the model yourself — no per-token bill, full data control, and the ability to fine-tune. It does not mean the training data or process is open; it means the trained model is yours to deploy under its license. Read that license before commercial use.

02The hardware reality

The full models are large and need serious GPU memory — typically multiple high-end GPUs for the bigger variants. Smaller or quantized versions run on more modest hardware with some quality trade-off. Factor in serving infrastructure, not just the GPUs: batching, scaling, monitoring, updates.

When self-hosting wins

Choose it when data cannot leave your environment (regulated industries, sensitive IP), when you need fine-tuning on private data, or when steady high volume makes owned compute cheaper than per-token API. For everything else, the hosted API is cheaper and far less work.

Self-hosting moves the cost from per-token to people and infrastructure. Unless you have the GPUs, the MLOps skills, and the volume to justify it, the hosted API almost always wins on total cost.
Frequently asked

DeepSeek — your questions, answered

Can I self-host DeepSeek?
Yes — DeepSeek publishes open weights you can download and run on your own hardware, which gives you data control and the ability to fine-tune.
What hardware do I need to run DeepSeek?
The full models need serious GPU memory (often multiple high-end GPUs); smaller or quantized versions run on more modest hardware with some quality loss.
When is self-hosting worth it?
When data cannot leave your environment, you need to fine-tune on private data, or steady high volume makes owned compute cheaper than the per-token API.
Does open-weight mean DeepSeek is fully open source?
No — the trained weights are released to run and fine-tune under a license, but the training data and process are not necessarily open. Check the license before commercial use.
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