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DeepSeek vs Qwen
A plain-English comparison to help you choose between them.
An open-weights head-to-head where deployment path, not raw capability, decides. Pick Qwen when you are standing up a new self-hosted deployment: its Apache-2.0 open-weight line is the current default for that job, actively maintained, with a clean path from local prototyping on Ollama to production serving on vLLM. Pick DeepSeek when the hosted lane matters: a free capable chat assistant and the lowest-cost frontier-grade API in the class, with its own open weights as the private fallback. Many stacks simply run both and route by task.
Side by side
- Summary
DeepSeek is the price disruptor at the frontier: a free, capable chat assistant, an API priced far below the western frontier labs, and open-weight model releases that anyone can download and run.
- Best for
- A free, genuinely capable chat assistant
- The lowest-cost frontier-grade API for builders
- Open weights you can download and self-host
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Runs privately (self-hostable)
- Data
- The hosted service processes data under Chinese jurisdiction, which rules it out for sensitive work; self-hosting the open weights removes that concern entirely.
- Summary
Qwen is Alibaba's model line, and the part this guide recommends is the open-weight family: the models you download and serve on your own hardware.
- Best for
- The current default for new self-hosted coding work
- Apache-2.0 open weights, free to download and run
- Coding agents on infrastructure you control
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Runs privately (self-hostable)
- Data
- Qwen's hosted API runs on Alibaba Cloud, which carries a jurisdiction question for some organisations. Self-hosting the open weights removes it: the model runs on your own infrastructure, so data governance stays entirely in your hands.
Common questions
Which weights should a new self-hosted project start with?
Qwen, as the current default for new self-hosted coding and agentic work, with DeepSeek the natural second open-weight option on the same serving stack. That ordering reflects maintenance cadence and tooling fit rather than a capability gulf, and it can shift with releases. Verify licence terms per model release before anything enters a product, on both families.
What about the hosted options?
DeepSeek's hosted lane is the stronger consumer offer: free chat that holds up on reasoning and coding, plus an API that undercuts the western labs at volume. Qwen's paid hosted API runs on Alibaba Cloud, and one clarification matters: its flagship 3.7 models are closed-weight and API-only. Both hosted routes carry a jurisdiction question that self-hosting removes entirely.
Do either replace a frontier subscription?
For the hardest work, not yet, and both families' honest positioning says so: on ambiguous specifications and sustained multi-agent work the closed frontier models still win. The working pattern is a daily driver you own or rent cheaply, with a retained frontier seat for the problems that resist it. What these two change is the cost of everything below that line.
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Tool facts last checked July 2026